Find the solution of the system of equations.
-8x+5y=43
-8x+4y=36

Answers

Answer 1

Answer:

[tex]x=-1\\y=7[/tex]

Step-by-step explanation:

Given equations:

[tex]-8x+5y=43[/tex]    Equation:1

[tex]-8x+4y=36[/tex]     Equation:2

As the coefficients of 'x' are same which will eliminate the terms of 'x':

Subtracting Equation:2 From Equation:1

        [tex]-8x+5y-(-8x+4y)=43-36\\\\-8x+5y+8x-4y=7\\\\5y-4y=7\\\\y=7[/tex]

Putting value of 'y' in either equation:1 or 2

Putting y=7 in equation:2

   [tex]-8x+4y=36[/tex]

    [tex]-8x+4(7)=36\\\\-8x+28=36[/tex]

Subtracting '28' from both side:

     [tex]-8x+28-28=36-28\\\\-8x=8\\[/tex]

Changing the sides:

       [tex]8x=-8[/tex]

         [tex]x=\frac{-8}{8} \\\\x=-1[/tex]

The values are :        

                             [tex]x=-1\\y=7[/tex]


Related Questions

7. (03.05 LC)
The functions f(x) and g(x) are described below:
f(x) = 7x + 9
g(x) = 7x – 4
The graph of g(x) is obtained by shifting down the graph of f(x) byl
units. (5 points)
8. (03.05 LC)
T
halha
t atamata baze decrribae the Affert frankmino thaiarnik
r.​

Answers

Answer:

13 units

Step-by-step explanation:

g(x) = 7x + 9 - 13

g(x) = f(x) - 13

Answer:

7.       the answer is 13

Step-by-step explanation:

A local hamburger shop sort of combined total of 724 hamburgers and cheeseburgers on Tuesday there were 74 more cheeseburgers sold them hamburgers how many hamburgers were sold on Tuesday

Answers

Answer:

325

Step-by-step explanation:

h + 74 = 724

h = 724 - 74

h = 650.

h = 325.

Multiplying Polynomials, Simplify with Work Shown.

3x^2 (4x^3 + 9x^2 - 8x + 4)

20 Point offer for real, complete answer.

Answers

Answer:

12x^5+27x^4-24x^3+12x^2:

Step-by-step explanation:

hope it helps

Decimal equivalent to 11/44

Answers

Answer:0.25

Step-by-step explanation:

11/44 is equal to 1/4

1/4 is 0.25

Ben is 12 years older than Ishaan.Ben and Ishaan first met two years ago.Three years ago,Ben was 4 times as old as Ishaan.

Answers

Ben is 19 and Ishaan is 7.

If 3 years ago Ben was 4 times the age of Ishann, their ages could have been any of the following:

1. Ben is 4 and Ishaan is 1

2. Ben is 8 and Ishaan is 2

3. Ben is 12 and Ishaan is 3

4. Ben is 16 and Ishaan is 4

And so on.

Next add 3 to both ages, to show current age.

1. Ben is 7 and Ishaan is 4

2. Ben is 11 and Ishaan is 5

3. Ben is 15 and Ishaan is 6

4. Ben is 19 and Ishaan is 7

Ben is currently 12 years older than Ishaan. To find the difference, take Ben's age and subtract Ishaan's age.

1. 7 - 4 = 3

2. 11 - 5 = 6

3. 15 - 6 = 9

4. 19 - 7 = 12

Thus meaning Ben is 19 and Ishaan is 7.

I hope this helps!

suppose you connect the points on the graph in the example, what would the graph look like?

Answers

Answer:

Your graph would look like lines going up and up and up

Step-by-step explanation:

Why you ask? Well, because the graph shown here is going by the factors of 6. And the factors of 6 are pretty high, which means it would be going up like a twisted line going right ot left depending which way you look at it. It would be going up and up because like 18 times 6 is 108 and 20 times 6 is 120.

Eric bought apples and oranges for $7.75. He paid $2.35 for all the apples
and $0.45 for each orange. How many oranges did he buy?

Answers

Answer:

He bought 12 oranges.

Step-by-step explanation:

Key words: "ALL the apples" "EACH orange."

7.75-2.35= 5.4

5.4/0.45= 12

Answer:

He bought 12 oranges.

Step-by-step explanation:

Keywords: "ALL the apples" and "EACH orange."

7.75-2.35= 5.4

5.4/0.45= 12

Step-by-step explanation:

Coach Jericho recorded the number of shots made by the starters on the 6th grade and 8th grade boys’ basketball team during the season.

6th Grade 8th Grade
22, 15, 17, 18, 20 58, 58, 52, 55, 53


Which statement is true? Select two answers.

A.
The data spread for the 8th graders is greater than for the 6th graders.

B.
Both sets of data have the same mean.

C.
The data set distribution for the 6th grade players is skewed right.

D.
The mean for the 8th grade players is 3 times the mean for the 6th grade players.

E.
The data set distribution for the 8th grade players is symmetric.

Answers

Answer:

D. The mean for the 8th grade players is 3 times the mean for the 6th grade players. & E. The data set distribution for the 8th grade players is symmetric.

What’s 4(-8x+5)-(33x-26)=

Answers

Answer:

x = -6/65

Step-by-step explanation:

Perform the indicated multiplications:  4(-8x+5) - 1(33x-26), obtaining:

-32x + 20 - 33x + 26

Combining like terms, we get

-65x = 6, or

x = -6/65

owl is related to a mouse in the same way that a predator is related to​

Answers

Answer:

its prey

Step-by-step explanation:

An owl is a predator to a mouse, they attack mice and eat them so the owl is the predator and the mouse is the prey. There for an owl is related to a mouse in the same way that a predator is related to its prey

Yo sup??

the answer to this question is prey

as an owl eats a mouse similarly a predator eats is prey

Hope this helps

A central angle of a sector equals 5 radians and the radius equals 20 inches. What is the measure of the arc length formed by the sector?

Answers

Answer:

100

Step-by-step explanation:

Please answer ASAP! Thank you in advance and make sure to use antibacterial soap and wash your hands for 1 minute.

Answers

Answer:

[tex]12.5 \ ft^2[/tex]

Step-by-step explanation:

Given that height is a quarter the sum of bases and that the height is 2.5ft.

The sum of bases is calculated as:

[tex]h=\frac{1}{4}\sum{b_i}=2.5\\\\\sum{b_i}=2.5\times 4\\\\\sum{b_i}=b_1+b_2=10\ ft[/tex]

#Having that (b1+b2=10 ft), we can now calculate the area using the given formula using the given figures:

[tex]A=\frac{1}{2}\times 2.5\times (b_1+b_2), b_1+b_2=10\\\\=\frac{1}{2}\times 2.5\times10\\\\=12.5[/tex]

Hence, the area of the trapezoid is 12.5 sq ft

*Using the h=2.5ft and the [tex]A=\frac{1}{2}h(b_1+b_2)[/tex]

Factor the expression: 8t-32u

Answers

Answer:

Step-by-step explanation:

8t - 32u = 8*t - 8*4*u

            = 8*(t - 4u) = 8(t -4u)

HELP! PLEASE! Jackson is building a small rectangular basketball section in his backyard. The length of the section will be 1.25 times the width of the section.
Part A
Create an equation to represent the area of the basketball section, A, in terms of the width, w.
Part B
Jackson decides to make the area of the basketball section 245 square feet. What are the dimensions, in feet, of the basketball section?
SHOW ALL WORK PLEASE

Answers

Answer:

Part A) [tex]A=1.25W^2[/tex]

Part B) Length: 17.5 feet and Width: 14 feet

Step-by-step explanation:

Part A) Create an equation to represent the area of the basketball section A, in terms of the width W.

Let

L ----> the length of the  rectangular basketball section

W ---> the width of the  rectangular basketball section

we know that

The area of the rectangular basketball section is equal to

[tex]A=LW[/tex] ----> equation A

The length of the section will be 1.25 times the width of the section

so

[tex]L=1.25W[/tex] ----> equation B

substitute equation B in equation A

[tex]A=(1.25W)W\\A=1.25W^2[/tex]

Part B) Jackson decides to make the area of the basketball section 245 square feet. What are the dimensions, in feet, of the basketball section?

we have

[tex]A=1.25W^2\\A=245\ ft^2[/tex]

so

[tex]245=1.25W^2[/tex]

solve for W

[tex]W^2=245/1.25\\W^2=196\\W=14\ ft[/tex]

Find the value of L

substitute the value of W in the equation B

[tex]L=1.25(14)=17.5\ ft[/tex]

therefore

The dimensions are :

Length: 17.5 feet

Width: 14 feet

Final answer:

The area equation for the basketball section is A = 1.25w². For an area of 245 square feet, the width, w, is approximately 14 feet, and the length, l, is approximately 17.5 feet.

Explanation:

Part A: Equation of the Area

To create an equation that represents the area, A, of the basketball section in terms of the width, w, we start with the fact that the length is 1.25 times the width. So, if l represents the length, then l = 1.25w. The area of a rectangle is found by multiplying the length by the width, hence the area A = l × w. Substituting l = 1.25w gives us the equation A = (1.25w) × w = 1.25w².

Part B: Dimensions of the Basketball Section

Given the area of the basketball section is 245 square feet, we can use the equation found in Part A to determine the width and subsequently the length. The equation A = 1.25w² becomes 245 = 1.25w². Solving for w, we take the square root of both sides after dividing by 1.25, which gives w = √(245/1.25) ≈ 14 feet. To find the length, l, we multiply the width by 1.25, resulting in l = 1.25 × 14 ≈ 17.5 feet. Therefore, the dimensions are approximately 14 feet in width and 17.5 feet in length.

15^1/5 rewrite in radical form

Answers

Answer:

[tex]\sqrt[5]{15}[/tex]

Step-by-step explanation:

A number to 1/5 is the [tex]\sqrt[5]{n}[/tex]

A number to 1/3 is the [tex]\sqrt[3]{n}[/tex]

So, since the number is 15 to the 1/5, it is [tex]\sqrt[5]{15}[/tex]

Answer:  [tex]\sqrt[5]{15}[/tex]

Answer:

[tex]15^{\frac{1}{5} } = \sqrt[5]{15}[/tex]

Step-by-step explanation:

recall that

[tex]a^{\frac{1}{b} } = \sqrt[b]{a}[/tex]

if we apply this to our case,

[tex]15^{\frac{1}{5} } = \sqrt[5]{15}[/tex]

What is the area of the frame around the picture?

Answers

12 x 6s - 8 x 4s = 72s - 32s = 40s

Answer:

40s units²

Step-by-step explanation:

Area of frame = area of bigger rectangle - area of smaller one

Area of big rectangle = length × breadth

= 12 × 6s = 72s unit²

Area of smaller rectangle = length x breadth

= 8 × 4s = 32s units²

Area of frame  = 72s -  32s

= 40s units²

I hope this was helpful, please mark as brainliest

Solve -8(2z-3) Equivalent to -16z-3

Answers

Answer:

-16z + 24

Step-by-step explanation:

Apply the Distributive Property of Multiplication:

-8(2z-3) = -16z + 24

Answer:

-27

Step-by-step explanation:

-8 ( 2z - 3 ) = -16z - 3

distribute -8

-16z + 24 = -16z - 3

add 16z on right side

z + 24 = - 3

subtract 24 on left side

z = -27

Hopefully this helps :)

The circle is inscribed in triangle PRT. A circle is inscribed in triangle P R T. Points Q, S, and U of the circle are on the sides of the triangle. Point Q is on side P R, point S is on side R T, and point U is on side P T. The length of R S is 5, the length of P U is 8, and the length of U T is 6. Which statements about the figure are true? Select two options. The perimeter of the triangle is 19 units. TU ≅ TS PU ≅ TU The length of line segment PR is 13 units. The length of line segment TR is 10 units.

Answers

Option B: [tex]TU $\cong$ TS PU $\cong$ TU[/tex]

Option C: The length of line segment PR is 13 units.

Explanation:

Given that the circle is inscribed in triangle PRT. Points Q, S, and U of the circle are on the sides of the triangle. Point Q is on side P R, point S is on side R T, and point U is on side P T.

The length of RS is 5, the length of PU is 8 and the length of UT is 6.

Option A: The perimeter of the triangle is 19 units.

The perimeter of the triangle is given by

Perimeter of ΔPRT = PU + UT + TS + SR + RQ + QP

Since, P, T and R are tangents to the circle and we know that "Tangents to a circle drawn to a point outside the circle are equal in length".

Thus, we have,

RS = RQ = 5

PU = PQ = 8 and

UT = TS = 6

Substituting the values in the perimeter of ΔPRT, we get,

Perimeter of ΔPRT = 8 + 6 + 6 + 5 + 5 + 8 =38 units

Thus, the perimeter of the triangle is 38 units.

Hence, Option A is not the correct answer.

Option B : [tex]TU $\cong$ TS PU $\cong$ TU[/tex]

Since, P, T and R are tangents to the circle and we know that "Tangents to a circle drawn to a point outside the circle are equal in length".

Then [tex]TU $\cong$ TS PU $\cong$ TU[/tex]

Hence, Option B is the correct answer.

Option C: The length of line segment PR is 13 units.

The length of PR is given by

PR = PQ + QR

Substituting the values RQ = 5 and PQ = 8, we get,

PR = 5 + 8 = 13 units

Thus, the length of line segment PR is 13 units.

Hence, Option C is the correct answer.

Option D: The length of line segment TR is 10 units.

The length of TR is given by

TR = TS + SR

Substituting the values TS = 6 and SR = 5, we get,

TR = 6 + 5 = 11 units

Thus, the length of line segment TR is 11 units

Hence, Option D is not the correct answer.

Answer: b and e

Step-by-step explanation:

how to graph -5x + y = 1

Answers

Answer:

look on the graph i gave you

Step-by-step explanation:

Help show the work for
5.2 divide by 0.13

Answers

Answer:

40

Step-by-step explanation:

0.13 ⟌5.2 (We can move 0.13 over two spots)

13⟌520 (We move the decimal two spots because of previous)

We have

    ₄ ₀

13⟌520

  - 52

______

      0 0

       - 0

   ______

          0

So 40 is our final answer.

The value of  (5.2/0.13) is 40 obtained by removing the decimals.

What are some alternative names for arithmetic operations?

Addition is also known as the sum, subtraction is also known as the difference, multiplication is also known as the product, and division is also known as the factor.

Given, 5.2 is divided by 0.13, which is (5.2/0.13).

Now we can multiply both the numerator and the denominator by 100.

(5.2/0.13)×(100/100).

= 520/13.

= 40.

learn more about decimal division here :

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A chemist needs 500mL of 20% acid and 80% water mix for an experiment. He adds x mL of a 10% acid and 90% water and y mal of a 30% acid and 70% water mix to the 20% acid and 80% water mix. Find the amounts x and y

Answers

Answer:

  x = y = 250 mL

Step-by-step explanation:

The desired concentration of acid (20%) is exactly halfway between the concentrations of the available supplies (10%, 30%). So, the mix will be equal parts of each of those. x and y are both half the total quantity required:

  x = y = (500 mL)/2 = 250 mL

_____

If you need an equation to solve this, you can let x = 500 -y and write the equation for the acid volume in the final mix:

  10%(500 -y) +30%(y) = 20%(500)

  50 -0.1y +0.3y = 100 . . . . . eliminate parentheses

  0.2y = 50 . . . . . . . . . . . . . . subtract 50, collect terms

  y = 250 . . . . . . . . . . . . . . . multiply by 5 (equivalently, divide by 0.2)

  x = 500 -250 = 250

WILL GIVE 100 POINTS,.A car’s wheels spin at 1000 revolutions per minute. The diameter of the wheels is 23 inches. You want to know how fast the car is travelling. Show your work

Answers

Answer:

72,220

Step-by-step explanation:

23,000 • 3.14 =

If the vehicle is traveling at 1,000 revolutions per minute, with the diameter of the wheels being 23 inches, the vehicle would be moving at 72,220 inches per minute.

72220.000512 = 68.390152 = 68 MPH

-6h+7=-17 what would h equal.

Answers

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

-6x__ should equal -17 so my best choice would to guess and check

if we do 5 that will give us -23 i believe

if we do 4 it gives us -17 so this would be our answer 4

3) Paul bought 2 muffins, 2 brownies and I cookie at a bake sale. The muffins cost $1.30
each, the brownies cost $0.75 a piece and the cookie was $0.50. If he paid with a twenty
dollar bill, how much change should he get back?

Answers

Answer:

$15.40

Step-by-step explanation:

1.30 × 2 = 2.60

0.75 × 2 = 1.50

2.60 + 1.50 + 0.50 = 4.60

20 - 4.60 = 15.40

it take 96 pounds or seed to completely plant a 10-acre field. how many pounds of seed are needed per acre?

Answers

Answer:

9.6 lb/acre

Step-by-step explanation:

This is a unit rate problem. You want to know the number of pounds used for one acre.

You divide 96 pounds by 10 acres to find the number of pounds per 1 acre.

(96 lb)/(10 acres) = 9.6 lb/acre

Answer: 9.6 lb/acre

Final answer:

To find how many pounds of seed are needed per acre, divide the total amount of seed used, which is 96 pounds, by the total area, 10 acres. The answer is 9.6 pounds per acre.

Explanation:

This problem is a simple division problem in Mathematics. We start by taking the total amount of seed that was used, which is 96 pounds. Then, we divide this by the total area, which in this case is 10 acres.

When we perform the calculation: 96 pounds ÷ 10 acres, the solution we get is 9.6 pounds per acre.

So, it requires 9.6 pounds of seed to plant one acre of the field. Remember, this is an average estimation. Actual seed requirement may vary depending on the type of seed and other factors such as soil and weather conditions.

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Two functions are combined resulting in the function j(x) = -3x^2+5.

Which operations applied to the specified functions could result in j(x)? Select three options.

-two linear functions by addition
-two quadratic functions by addition
-a linear function and a quadratic function by addition
-two linear functions by multiplication
-two quadratic functions by multiplication

Answers

Final answer:

To obtain j(x) = -3x²+5, we need to combine a linear function and a quadratic function. Three possible options are provided in the response.

Explanation:

The function j(x) = -3x²+5 is a quadratic function. To obtain this function by combining two other functions, we can use a linear function and a quadratic function added together. This means that one of the functions will have a degree of 1 and the other will have a degree of 2. Here are three options that could result in j(x):

Quadratic function: 2x²-7x+5
Linear function: -5x
Combining the linear function -5x and the quadratic function 2x²-7x+5 will result in j(x).Quadratic function: -x²+10x-5
Linear function: -4x+5
Combining the linear function -4x+5 and the quadratic function -x²+10x-5 will result in j(x).Quadratic function: 5x²-12x+10
Linear function: -3x+5
Combining the linear function -3x+5 and the quadratic function 5x²-12x+10 will result in j(x).

Learn more about linear function and a quadratic function here:

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Ava washes 12 % windows in /hour. At this rate, how many windows can
she wash in one hour? ​

Answers

Answer:

She will wash 24% windows in one hour

Step-by-step explanation:

If Ava washes 12% windows in half hour

Since 2 half hours makes one hour

Therefore, 2 × 12% will be washed in one hour

That is, Ava will wash 24% windows in one hour

Which is true regarding Adi's use of algebra tiles?

Adi used algebra tiles to represent the product

(-2x-2)(2x-1).

A. She used the algebra tiles correctly.

B. She did not represent the two original factors correctly

on the headers.

C. The signs on some of the products are incorrect.

D. Some of the products do not show the correct powers

of x.

Answers

Answer:

A. True

B. False

C. False

D. False

Step-by-step explanation:

Hence she used it correctly by making parts of it.

Answer: Its A my boy

Step-by-step explanation:

Find the value of x to the nearest tenth.

Answers

Answer:

16. The answer is 16.5

17. The answer is Sin33.1°

18. The answer is 38.2

Step-by-step explanation:

In rounding up figures, number 1 to 4 is rounded up to 0 while numbers 5 to 9 is rounded up to 1.

16. Two sides in the right angle triangle are involved, the opposite side and the adjacent side, hence we use the tangent.

Tan36°=12/x

Cross multiply

x(tan 36°)= 12

Divide both sides by tan36°

x= 12/tan36°

16.516583

Rounded to the nearest tenth, we have 1 as the digit hundredth, which will be rounded up to 0.

Added to the tenth digit, still remains 5.

Answer therefore is 16.5

17. Two affected sides here is the opposite side and hypothenus sid, hence we use the sine.

sin x=12/22

= 33.055°

The digit hundredth is 5, which is rounded up to 1. Added to the tenth digit, we have 0+1=1

Answer is 33.1

18. Two affected sides are the opposite side and hypothenus side, we also use the sine.

Sin58°=x/45

Make x the subject

x=45/sin58°

38.162

6 is the digit hundredth, and it is rounded up to 1. Adding 1 to 1, the tenth digit in the figure above, we have our answer as

38.2

A shoreline is eroding at a rate of 1/3 foot per 3 months. How many feet are eroding per year?

Answers

The number of feet the shoreline is eroding per year is 1 ⅓ feet.

How many feet are eroding per year?

Rate of shoreline eroding per 3 months = 1/3 foot

Number of 3 months in a year = 12 months / 3 months

= 4

Number of feets of the shoreline eroding per year = Rate of shoreline eroding per 3 months × Number of 3 months in a year

= 1/3 × 4

= 4/3 feet per year

Therefore, the shoreline erodes 1⅓ feet per year

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