Answer:
x = 9, y = 2
Step-by-step explanation:
Given the 2 equations
x + 10y = 29 → (1)
x - y = 7 → (2)
Subtracting (2) from (1) term by term will eliminate the term in x
(x - x) + (10y - (- y)) = (29 - 7), that is
11y = 22 ( divide both sides by 11 )
y = 2
Substitute y = 2 in either of the 2 equations
Substituting in (2)
x - 2 = 7 ( add 2 to both sides )
x = 9
How do the numbers compare
The fact family model represents the relationship between
the numbers 8, 7, and 15.
15 is 7 more than 8.
15 is 8 less than 7.
7 is 15 less than 8.
07 is 8 more than 15.
Answer:
A
Step-by-step explanation:
8+7=15
For the numbers 8, 7, and 15, the true statements are '15 is 7 more than 8' and, when rephrased correctly, '7 is 8 more than 15'. The concept of significant figures plays an important role in mathematical operations to maintain the accuracy of results based on the precision of original numbers.
Explanation:The fact family model is used to represent the relationship between three numbers that can form addition and subtraction statements. For the numbers 8, 7, and 15, only some of the given statements are true. Let's verify each statement:
15 is 7 more than 8: This statement is true, as 8 + 7 equals 15.
15 is 8 less than 7: This statement is false, as adding 8 to 7 gives us 15, not taking 8 from 7.
7 is 15 less than 8: This statement is false, as subtracting 15 from 8 would give us a negative number, not 7.
7 is 8 more than 15: This statement is true when we rephrase it correctly as 7 + 8 equals 15.
Therefore, only two statements are accurate: '15 is 7 more than 8' and '7 is 8 more than 15' when considered as 7 + 8 = 15.
The subject of significant figures and rounding is also related to mathematics. When performing mathematical operations, significant figures are crucial to ensure that our answers are as accurate as the precision of the numbers we started with, without overstating the certainty of our results. This becomes important when adding, subtracting, multiplying, or dividing numbers in mathematics.
Learn more about Fact Family here:https://brainly.com/question/35705130
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Does (2,1 ) make the equation true? 2x+7y>=10
Answer:
2x+7y>=10
Replace x and y with 2 and 1
2*2+7*1>=10
2*2=4
7*1=7
4+7>=10
7+4=11
2x+7y>=10 is a true statement
Because 11 is greater than 10 and it doesnt have to be equal to 10 as long as its greater.
Answer:
No. it does not
Step-by-step explanation:
(i assumed you meant 2x+7y=10)
1.) 2(2)+7y=10
2.)2(2)+7(1)=10
3.)4+7=10
4.)11=10
O que significa a letra E depois de números grandes?
E é usado para significar "10 à potência de". Por exemplo, 1.314E + 1 significa 1.314 * 101, que é 13.14.
Jackson drove 1,080 miles
in 20 hours. What was his
speed in miles per hour?
Answer:
54mph
Step-by-step explanation:
To find the speed in "miles per hour" or miles/hour, divide the number of miles by number of hours.
1080 miles/20 hours
= 54miles/hour
His speed is 54 miles per hour.
Translate this sentence into an equation.
Five less than two times Mary's age is 13.
Use the variable m for Mary's age.
HELP U WILL MARK YOU AS A BRAINLIEST!!(I’m dumb sorry)
Which pairs of numbers have a greatest
common factor of 10?
Select all that apply.
A. 2 and 5
B. 5 and 10
C. 10 and 20
D. 30 and 50
E. 40 and 60
Answer:
C. 10 and 20
Step-by-step explanation:
A common factor is just a value that both numbers can be divided by to give you an integer. (an integer is a number without a decimal point btw or anything that is not a fraction)
Answer A and B are too small so there's no way they can be divided by 10.
D and E are too big, so they can be divided by a number bigger than 10. (the question did ask for the biggest dividing number to be 10)
The only answer left is C.
What’s the best answer to 7h+3=
Answer:
Step-by-step explanation:
Incomplete question. 7h+3 is just an algebraic expression.
The number -2.34 can be found between which two integers?
(Full question above)
Answer:
last option
Step-by-step explanation:
imagine a number line
________________________________________________
-3 -2 -1 0 1 2 3
|
-2.34 would be found somewhere over there
Find an expression for the number of squares in the nth pattern of the sequence. I noticed that the number of squares you add in each pattern it depends on the pattern number (see image) but I don't know how to get the expression.
The answer is T(n)=5(n-1)+n+1
because = T(4)=5(4-1)+4+1
=T4=5(3)+5
=T4=15+5
=T4=20
this took me half an hour
Can someone help me with 1c? I don’t understand how to find an equation for an asymptote.
Answer:
y = 0
Step-by-step explanation:
1 c.
If we have an exponential function of the form [tex]f(x)=a^x[/tex], where "a" is any positive integer, say, then that function will take the general shape of the function shown in the picture.
It will always approach the x-axis but never meet (touch). Any line that a function (graph) approaches but never touches, is known as an asymptote to the graph.
Since the function [tex]f(x)=4^x[/tex] follows the path of the general form shown above, this also approaches the x-axis, but never touches. So, the x-axis is the asymptote of the function.
We know
x-axis has equation y = 0, and
y-axis has equation x = 0
Here, the x-axis is the asymptote, so the equation is:
y = 0
A student reads 56 pages in 4 hours. How many pages will the student read in 7 hours? Find the constant of variation.
The constant of variation here is the reading speed, which is 14 pages per hour.
The student reads 56 pages in 4 hours. To find out how many pages the student will read in 7 hours, we first calculate the constant of variation, which is the student's reading speed per hour. We divide 56 pages by 4 hours to get a reading speed of 14 pages per hour. To find the total number of pages read in 7 hours, we multiply the hourly reading speed by 7 hours.
Calculate hourly reading speed: 56 pages 4 hours = 14 pages/hour.
Multiply the hourly reading speed by the number of hours: 14 pages/hour 7 hours.
The student is expected to read 98 pages in 7 hours (14 pages/hour 7 hours = 98 pages).
hence, the student's constant of variation is their reading speed, which is 14 pages per hour. By multiplying this constant by 7 hours, we find that the student will read 98 pages in 7 hours.
Rory, Lorena, and Phil play a third round of golf. Lorena’s score is 1 in the third round. Phil ties Rory’s score at -3. Write an inequality that shows why Lorena lost that round.
Answer:
(1,-3)
Step-by-step explanation:
are the two equations -6 + y = 2x and 2y - 4x = 12 dependent?
Yes they are linearly dependent, essentially the same equation.
Start from one of them:
-6 + y = 2x
Move things around:
y - 2x = 6
Multiply both sides by 2,
2y - 4x = 12
That's the second equation, which we've shown is equivalent to the first, so they're linearly dependent.
Match each number on the left with the correct description of the number on the right.
Answer options on the right may be used more than once.
(Full question above)
Step-by-step explanation:
An integer is a number that can be written without a fractional component.
A rational number is a number that can be represented as a fraction with a non-zero denominator, and its decimal expansion is finite or infinite and repeat.
An irrational number is a real number which is not a rational number.
[tex]\bold{integer:}\\-2,\ 150\\\\\bold{rational\ but\ not\ an\ integer:}\\\\-\dfrac{1}{2},\ 6.\overline{6}\\\\\bold{irrational:}\\\\-\sqrt3[/tex]
Which expression has the same value as 2n + n
Answer:
3nStep-by-step explanation:
2n + n combine like terms
= 2n + 1n = (2 + 1)n = 3n
Answer:
3n
Step-by-step explanation:
2n + n Combine like terms
= 2n + 1n = (2+1)n= 3n
If and CX = 5 units, what is DZ?
The question is missing the figure. So, it is attached below.
Answer:
DZ = 4 units
Step-by-step explanation:
Given:
CD || XZ
YC = 25 units, CX = 5 units, YD = 20 units.
We know that,
If CD is parallel to XZ , then the line CD divides the sides XY and YZ of the triangle XYZ proportionally. This is true by triangle proportionality theorem.
Therefore, the lengths YC, CX, YD and DZ are in proportion. This gives,
[tex]\frac{YC}{CX}=\frac{YD}{DZ}[/tex]
Rewrite in terms of DZ. This gives,
[tex]DZ=\frac{YD\times CX}{YC}[/tex]
Plug in [tex]YC=25,CX=5,YD=20[/tex]. Solve for DZ.
[tex]DZ=\frac{20\times 5}{25}\\\\DZ=\frac{100}{25}=4[/tex]
Therefore, the length of DZ is 4 units.
Answer:
4
Step-by-step explanation:
What is 8,427 divided by 6??????
Answer:
1404.5 is your answer when you divide 8,427 by 6
Answer:
1404.5
Step-by-step explanation:
8427 divided by 6 in decimal = 1404.5
8427 divided by 6 in fraction = 8427/6
8427 divided by 6 in percentage = 140450%
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the systems of equations with their solution sets.
y + 12 = x2 + x
x + y = 3
y - 15 = x2 + 4x
x - y = 1
y + 5 = x2 - 3x
2x + y = 1
y- 6 = x2 – 3x
x + 2y = 2
y-17 = x2 - 9x
-x + y = 1
y - 15 = -x2 + 4x
x + y = 1
Solution Set
Linear-Quadratic System of Equations
{(-2,3), (7,-6)
{(-5, 8). (3,0)
{(-2,5),(3,-5)
{(2, 3), (8,9)
Answer:
{(-2,3), (7,-6) } -----> y - 15 = -[tex]x^{2}[/tex] + 4x
x + y = 1
{(-5, 8). (3,0) } ----> y + 12 = [tex]x^{2}[/tex] + x
x + y = 3
{(-2,5),(3,-5) } -----> y + 5 = [tex]x^{2}[/tex] - 3x
2x + y = 1
{(2, 3), (8,9)} -----> y-17 = [tex]x^{2}[/tex] - 9x
-x + y = 1
Step-by-step explanation:
The simplest way to find the answer is by solving all the equations and finding the value of x and y for each of them.
Solving the equations ->
y + 12 = [tex]x^{2}[/tex] + x
x + y = 3
Substitute y = 3-x from second equation to first and solving the quadratic equation obtained i.e solving [tex]x^{2}[/tex] + 2x -15 = 0 , we get values of x = -5 , 3 and the corresponding values of y by substituting values of x in second equation , y = 8, 0 respectively. So, solution matched = {(-5, 8). (3,0) }.
Similarly solving other equations using exactly the same method as above we get the following solutions,
For,
y - 15 = [tex]x^{2}[/tex] + 4x
x - y = 1
we don't get any integer solution for this hence it has no match.
For,
y + 5 = [tex]x^{2}[/tex] - 3x
2x + y = 1
we get x = 3,-2 and corresponding y = -5,5
So, solution is {(-2,5),(3,-5) }
For,
y- 6 = [tex]x^{2}[/tex] – 3x
x + 2y = 2
we again don't get any integer solution for x and y so this has no match.
For,
y-17 = [tex]x^{2}[/tex] - 9x
-x + y = 1
we get x = 2,8 and corresponding y = 3,9
So, {(2, 3), (8,9)} is the solution match.
Lastly for,
y - 15 = -[tex]x^{2}[/tex] + 4x
x + y = 1
we get x = -2,7 and corresponding y = 3,6
So, {(-2,3), (7,-6)} is the solution match.
Find the point, M, that divides segment AB into a ratio of 2:3 if A is at (0.15) and B is at (20.0)
Answer:
M = (8,9)
Step-by-step explanation:
Notice that the points (0,15), and (20,0) form with the origin of coordinates (0,0), a right angle triangle (please see attached image). This triangle has twon perpendicular sides of length 15 and 20 respectively. Therefore, we can find the length of the segment that joins points A (0,15) and B (20,0) by finding the length of the hypotenuse in a right angle triangle (with the Pythagorean Theorem):
[tex]AB=\sqrt{15^2+20^2} =\sqrt{625} =25[/tex]
Now, to get a 2:3 proportion on Segment AB which is of length 25, we need to divide it in five equal parts (see the picture on the right of the attached image), and place point M at two of these divisions from point A (0,15) and along segment AB.
In order to find the appropriate location in (x,y) coordinates, we consider a smaller triangle (pictured in orange in the image) that is similar to the first larger triangle (pictured in blue). Notice that if the length of AB is 25, each of its five equal divisions would be of length "5", and therefore two of them will render a length of "10" (which is the hypotenuse of this smaller right angle triangle.
Now, in order to find the sides of this smaller triangle (which can give us the clues on the horizontal and vertical coordinates of point M), we can use proportions.
To find the length "x" of the horizontal side , we do:
[tex]\frac{x}{10} =\frac{20}{25} \\x=\frac{10*20}{25} \\x=8[/tex]
To find the length "y" of the vertical side , we do:
[tex]\frac{y}{10} =\frac{15}{25} \\y=\frac{10*15}{25} \\y=6[/tex]
Then, the coordinate "x" of point M will be "8", while we can calculate the y position of point M subtracting "6" from 15 (the length of the vertical side in the original triangle). This gives us the coordinates (8,9) for point M as marked in orange in the picture.
In 2018, Yolanda paid $4,526 in Social Security tax. If the Social Security tax rate was 6.2% to the maximum income of $128,400 that year, what was Yolanda’s taxable income?
Answer:
$73000
Step-by-step explanation:
Given: Social security tax paid by Yolanda is $4562.
6.2% tax to be paid on earning to the maximum income of $128400.
Lets assume Yolanda´s income be `x`.
Now, calculating the taxable income of Yolanda
∴ [tex]62\% \times x= \$ 4526[/tex]
⇒ [tex]\frac{62}{100} \times x= 4526[/tex]
Cross multiplying both side
⇒ x= [tex]\frac{4526\times 100}{6.2}[/tex]
∴x= $73000
∴ Yolanda´s taxable income is $73000.
Answer:
Step-by-step explanation:
Salary x social security tax rate = social security tax
salary x .062 (6.2%)=4526
salary=4526/.062
salary=73000
17. The length of a rectangle is 12 in, and the perimeter is 56 in. Find the width of the rectangle.
Oo oo
O A. 16 in.
O B. 32 in.
O c. 22 in.
O D. 21 in.
Answer:
Step-by-step explanation:
P = 2(L + W)
P = 56
L = 12
now sub...we are looking for w
56 = 2(12 + W)
56 = 24 + 2W
56 - 24 = 2W
32 = 2W
32/2 = W
16 = W <==== the width is 16 inches
check...
P = 2(L + W)
56 = 2(12 + 16)
56 = 2(28)
56 = 56 (correct)
What is the approximate length of arc s on the circle below? Use 3.14 for pi. Round your answer to the nearest tenth
14.1in
22.5in
42.3in
56.5in
Answer: 14. 1 in
Step-by-step explanation:
The formula for calculating the length of an arc is given as :
L = Ф/360 x 2πr
where Ф is the angle subtended by the arc
r = radius
substituting the given values
L = 135/360 x 2 x 3.14 x 6
L = 5086.8/360
L = 14.13
L ≈ 14.1 in to the nearest tenth
Answer:
The answer is A
Step-by-step explanation:
edge 2021
help please!!!!!!!!!!!!!
Answer:
3
Step-by-step explanation:
What Do You Mean Graphy But I Just Think It Is 3
The shortest and longest sides of a right triangle have lengths of 11.1 inches and 18.5 inches, respectively. What is the length of the third side of the triangle?
Answer: 14.8
Step-by-step explanation:
11.1^2 + x^2 = 18.5^2
X is 14.8
Each polio consists of 4 doses and rack measles vaccination consists of 2 doses.Last year potter gave out a total of 60 vaccinations and that consisted of a total 128 doses.How many polio vaccinations and how many measles vaccinations did dr potter give last year?
Answer:
4 polio
56 measles
Step-by-step explanation:
Write equations to represent the problem
let x be the number of vaccinations for polio
let y be the number of vaccinations for measles
x + y = 60 Equation for vaccinations
4x + 2y = 128 Equation for doses
Solve the system using substitution. Rearrange x + y = 60 to isolate one variable.
x = 60 - y
Substitute x for 60-y in the other equation
4x + 2y = 128
4(60-y) + 2y = 128 Distribute over brackets
240 - 4y + 2y = 128 Collect like terms. They have the variable "y"
240 - 2y = 128 Subtract 240 from both sides
-2y = 128 - 240
-2y = -112 Divide both sides by -2
y = -112/-2
y = 56 Number of measles vaccinations
Substitute y for 56 in x + y = 60
x + y = 60
x + 56 = 60
x = 60 - 56
x = 4 Number of polio vaccinations
Therefore Dr. Potter gave out 4 polio vaccinations and 56 measles vaccinations.
Which property is illustrated by the statement?
(2+3.4) + 6 = 2 + (3.4+6)
Associative Property of Addition
Commutative Property of Multiplication
Inverse Property of Multiplication
Commutative Property of Addition
Answer:
The given expression represents the Associative Property of Addition.
Step-by-step explanation:
Here, the given expression is given as:
(2+3.4) + 6 = 2 + (3.4+6)
Now, for any 3 terms a, b and c the given properties in the options are described as:
1. Associative Property of Addition
(a +b) + c = a + (b + c)
2. Commutative Property of Multiplication
a x b = b x a
3. Inverse Property of Multiplication
[tex]a \times \frac{1}{a} = 1[/tex]
4. Commutative Property of Addition
a+ b = b + a
Hence, from the given expression,we can see that:
(2+3.4) + 6 = 2 + (3.4+6)
⇒(a +b) + c = a + (b + c)
Hence, the expression represents the Associative Property of Addition
Final answer:
The statement (2+3.4) + 6 = 2 + (3.4+6) demonstrates the Associative Property of Addition, indicating that the sum of a set of numbers is the same regardless of how the numbers are grouped.
Explanation:
The property illustrated by the statement (2+3.4) + 6 = 2 + (3.4+6) is the Associative Property of Addition. This property states that when adding three or more numbers, the way in which the numbers are grouped does not change the sum. For instance, as shown in the statement, (a + b) + c equals a + (b + c), which means that the groupings of the numbers can be changed without affecting the total sum. This is not to be confused with the Commutative Property of Addition, which is about the order of the numbers and states that A + B equals B + A. The commutative property tells us that we get the same result whether we add 2 + 3 or 3 + 2. However, the question explicitly deals with the grouping of numbers, not the order, thus confirming that the associative property is in use.
PLZ HELP ME THIS IS URGENT HELP!!!!!!!
Answer:
Value is 3.The volume of the rectangular prism is 105 [tex]ft^{3}[/tex]The value will be 186.1Step-by-step explanation:
The value of the expression is [tex]\frac{75}{5} - [(9 - 7) \times 3]\times 2 = 15 - 6\times2 = 15 - 12 = 3[/tex]
The formula to get the volume is [tex]length \times width \times height = 3\times 5\times 7 = 105[/tex]
[tex]\frac{8375}{45} = \frac{1675}{9} = 186.1[/tex]
Answer:
it is explained below..
Step-by-step explanation:
1. by using BODMAS rule: [ brackets of division multiplication addition subtraction] we have to do operations in this order only i.e, from brackets to subtractions.
given expression : 75[tex]\div[/tex]5-[(9-7)*3]*2
first solve brackets part:75[tex]\div[/tex]5-[(2)*3]*2
[as, 9-7=2]
75[tex]\div[/tex]5-[6]*2
[as, 2*3=6]
division part: 15-6*2multiplication part: 15-12 = 32. volume of rectangular prism: length*breadth*height
=7*3*5
=105
3. 8375[tex]\div[/tex]45
use conventional division method as 8375 isn't divisible by 45 directly.
after solving, answer: 186.11...
the table shows amounts of money that carol deposited and withdrew from her bank account. what is the overall amount of deposit or withdrawl
deposit: $400
deposit: $125
rent: -$300
Deposit: $50
Bill: -$74
What is the rule for 4,7,13,25,49,97
Answer:
The rule is x2 -1 (times two minus one)
4 - 1 = 3
4 + 3 = 7
7 - 1 = 6
7 + 6 = 13
13 - 1 = 12
13 + 12 = 25
25 - 1 = 24
25 + 24 = 49
49 - 1 = 48
49 + 48 = 97
Donald bought a box of golf balls for $9.27. There were 18 golf balls in the box.
About how much did each golf ball cost? Rename the decimal dividend as a whole number that is
compatible with the divisor to estimate the quotient.
Each golf ball costs about
Answer:
Each golf ball costs about $2.
Step-by-step explanation:
Given:
Donald bought a box of golf balls for $9.27. There were 18 golf balls in the box.
Rename the decimal dividend as a whole number that is compatible with the divisor to estimate the quotient.
Now, to find the cost of each golf ball.
As given:
Rename the decimal dividend as a whole number that is compatible with the divisor to estimate the quotient.
As, the cost of golf ball box = $9.27.
So, 9.27 nearest to whole number is 9.
Thus to get the cost of each ball:
18 golf balls cost = $9.
So, 1 golf ball cost = [tex]18\div 9=2.[/tex]
Therefore, each golf ball costs about $2.