Which of the following equations shows how substitution can be used to solve the following system of equations?
y = 2x - 7
3x + 4y = 16

Answers

Answer 1

Answer:

3x + 4y = 16

Step-by-step explanation:

please mark this answer as the brainliest

Answer 2

the  y=   equation shows how... b/c we can just plug y into the 2nd equation and eliminate y and have one variable, x , to solve for  :)


Related Questions

what is the slope of the line through (-1, 2) and (-3, -2)?

help me bestysss plsss :(

Answers

the slope will be 2.

vWhat is the probability of drawing either a king, a queen, or a jack from a deck of 52 playing cards

Answers

Answer:

20 por ciento de probabilidad de que elijas una de esas cartas

Step-by-step explanation:

20 por ciento de probabilidad de que elijas una de esas cartas

Answer:

12/52

Step-by-step explanation: each have four, times three is twelve out of 52 cards :)

The pre-image of triangle ABC has coordinates A(2,1), B(2,4), and C(6,1). After performing these transformations on graph paper (using tracing paper if needed), state the coordinates of the image of point A after the transformations.

Answers

Answer:

Point A is (4,3) Point B is (4,6) Point C is (8,3)  if that is what you are looking for.

Step-by-step explanation:

Mrs. Reid wrote the following problem on the whiteboard: Tom and Michele shared 1/4 pound of grapes equally. What fractional part of a pound did each person receive? Christina wrote the following equation to solve the problem: 2 ÷1/4 = n. Do you agree with Christina’s equation? Support your answer with a brief explanation.

Answers

Yes, I do.

You need to divide the number of people, by the number of grapes to get the total amount of grapes each person gets.

Evaluate the expression for r = 3 and s = 2.

r − s =

Answers

Answer:

1

Step-by-step explanation:

r - s

3 - 2 = 1

The correct Answer is 1

Use the diagram below to find the value of x.

Answers

18 hope it helps you

4e+22 X 3200
4e+22 X 3200= ?

Answers

What subject is this in maths

PLS HELP NOW I HAVE LESS THAN 5 MIN

Answers

The answer is C

I hope i helped you lol

Angle ABC is inscribed in circle p the length of PC is 12 units the arc length of a c is 68/15 pi what is the measure of angle ABC in degrees

Answers

Answer:

68°

Step-by-step explanation:

The formula for arc length when central angle is in degrees =

Arc length = 2πr × θ /360

Arc length = 68/15π

Radius = the length of PC = 12 units

Hence:

68/15π = 68π/15 = 2 × π × 12 × θ /360

68π/15 = 75.4 ×θ /360

Cross Multiply

68π × 360 = 15 × 75.4 × θ

θ = 68π × 360/15 × 75.4

= 67.998398019°

Approximately = 68°

Therefore, the measure of central angle = 68°

Answer:

here is the answer, first find the circumference and then use the formula i've written there

Which of the following points best represent ...

Answers

B I think sorry if I’m wrong

A bag contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the coins, 12% are pennies and 38% are dimes. There are 6 more nickels than pennies. How much money does the bag contain?

Answers

Answer:

$5.81

Step-by-step explanation:

Let n = no. of nickels

     d = no. of dimes

     p = no. of pennies

     q = no. of quarters

p = .12(50) = 6

d = .38(50) = 19

n = 6 + p = 6 + 6 = 12

q = 50 - 6 - 19 - 12 = 13

Amt of money = 6(1) + 12(5) +19(10) + 13(25)

                        = 6 + 60 + 190 + 325

                        = 581 cents = $5.81

Find the area of the polygon with vertices
A(-6,-2), B(-6,5), C(2,5), and D(2,-2).

Answers

Answer:

its b or c

i hope this helps! if not im sorry.


Place the digits 1, 5, 6, 9 into the boxes below to give the largest possible result.

Answers

Answer:

9 x (6-1) + 5

Step-by-step explanation:

PLEASE HELP!! no links please

Answers

Answer:

MAD IS THE MEDIUM AND SO THE AVERGE MARK IS 0.8

Step-by-step explanation:

make t the subject of k= t-e/2

Answers

Answer:

[tex]t=k+\frac{e}{2}[/tex]

Step-by-step explanation:

[tex]k=t-\frac{e}{2}\\t=k+\frac{e}{2}[/tex]

Cassandra bought a tablecloth. The area of the tablecloth is 120 ft2. The width of the tablecloth is 10 feet. How long is it?

Answers

Answer:

l = 12 ft

Step-by-step explanation:

A = lw

120 = 10l

l = 12 ft

Answer:

[tex]12[/tex]

Step-by-step explanation:

Remember, area is lw.

The width is 10, 10×[tex]12=120.[/tex]

If 2000 is placed into a bank account that pays 3% compound interest per year how much will be in the account after 2 years

Answers

Answer:

Account Balance = Principal x (1 + interest rate (decimal)) number of years, compounded annually.

Step-by-step explanation:

This is based on the information provided: 2121.80 (1.03)2 = 2000 So, on your initial deposit of 2000, you can collect 121.80 in interest after two years.

What is the simplified form of the quantity of x plus 5, all over 2 + the quantity of x plus 6, all over 2 ?
the quantity of x squared plus 11x plus 30, all over 2
the quantity of x squared plus 11x plus 30, all over 4
the quantity of 2x plus 11, all over 2
the quantity of x plus 5, all over the quantity x plus 6

Answers

Answer:

letter C is correct.

Step-by-step explanation:

What is r = 13 mm. I’m in desperate need of help.

Answers

Answer:

r is radius and the mm are milimeters

Step-by-step explanation:

If the length of each leg of an isosceles triangle is 17 meters, and the base is 16 meters long, what is the length of the altitude to the base?

Answers

The answerrrr will beee 15

промінь ділить розгорнутий кут на два кути. знайди ці кути, якщо один з них на 20градусів більший за другий

Answers

Answer:

write it in English so I can understand

Please write it in English please

Pleaseeee someone help me with this answerrrrr

Answers

deter mainAnswer:

Don't answer this.

Step-by-step explanation:

Iowa assesments are supposed to be done by the person taking them to  where they are at in school. They are meant to challange the person. They also don't effect your grade in anyway, so do your best. If you don't know the answer and it is multiple choice, pick B or C and move on.

Could someone help me find an equation ❤️

Answers

Answer:

-(2/3)x+4

Step-by-step explanation:

For the slope you do rise over run, since the graph intercepts the y-axis at 4 and goes down to 0 the rise is -4 and from the same point the graph "runs" 6 the rise/run is -4/6 which can be simplified to -2/3. For the y-intercept you simply find where the graph touches the y-intercept and add (or subtract if the number is negative) that to the end of the equation.

Which expression is equivalent to this equation!!! Look at picture !! pls help !

Answers

The answer is C or the third option

I need help pls help

Answers

(44.42700400081)

Step-by-step explanation:

this answer

Find the midpoint of the segment with the following endpoints.
(-8,-6) and (2, -10)

Answers

Answer:

Step-by-step explanation:

x-coordinate of midpoint:  is -8 + (2 - [-8]), or -8 + 10/2, or - 8+ 5, or x = -3.

y-coordinate of midpoint:  notice that the distance from -6 to -10 is 4; the y-coordinate of the midpoint is found by starting with -6 and adding 4/2:  -4

The midpoint is (-3, -4)

A number written in proper scientific notation, a x 10", a is greater than 1 and less than 10. True or false

Answers

True? Sorry if I am wrong

Beth has $300. Each week, she
buys a $15 CD and a $5 book.
How much money will she have
left after 6 weeks?

Answers

Answer:

$180

Step-by-step explanation:

$15 x 6 weeks = $90

$5 x 6 weeks = $30

$30 + $90 = $120 per week

300 - 120 = 180

‍ ‍ ‍ ‍ ‍‍‍ ‍ ‍ ‍ ‍‍‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍‍‍ ‍ ‍ ‍ ‍ ‍‍‍ ‍ ‍ ‍ ‍

‍‍‍

Answers

Answer:

The volume of this rectangular prism is 225 sqaure centimeters.

Step-by-step explanation:

The formula for finding volume is V = length * width * height

Substitute values in the formula:

5 * 15 * 3 = V

5 * 15 * 3 = 225

Hope this helps; have a great day!

Please help! I need this to pass. If you are trying to get points please just chose a different question and don't mess with mine. I am in a state of trouble and I just need a helping hand.

Answers

Given:

Radius of the cylinder = 2 cm

Height of the cylinder = 3 cm

To find:

The surface area of the cylinder.

Solution:

The surface area of a cylinder is:

[tex]A=2\pi rh+2\pi r^2[/tex]

Where, r is the radius and h is the height of the cylinder.

Putting [tex]r=2,h=3,\pi = 3.14[/tex], we get

[tex]A=2(3.14)(2)(3)+2(3.14)(2)^2[/tex]

[tex]A=37.68+25.12[/tex]

[tex]A=62.8[/tex]

Therefore, the surface area of the cylinder is 62.8 square cm.

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