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baherus [9]
3 years ago
11

Solve by using any method of substitution4 +8x = y 6x - y = 2

Mathematics
1 answer:
Bumek [7]3 years ago
8 0

Answer:

(-3,-20)

Step-by-step explanation:

4 +8x = y ...... equation (1)

6x - y = 2 ........equation(2)

from equation 2

6x - y = 2

6x -(4+8x) =2

6x - 4 + 8x = 2

    +4              +4

6x - 8x = 6

-2x=6

divide by -2

x= -3

put x in equation (1) to solve for y

4 + 8x = y

4+8(-3)=y

4-24=y

-20=y

y= -20

solution = (-3,-20)

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Y−5=23(x+4) what is the slope of this equation please
lara [203]

Answer:

The slope of the equation is 23

Step-by-step explanation:

First, we must simplify/solve the equation in order to find the slope

Let's get rid of the parentheses

y - 5 = 23x + 92

Then, combine like terms by moving 5 to the right side of the equation

y - 5 + 5 = 23x + 92 + 5

y = 23x + 97

The slope is always the number that is paired with "x"

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Step-by-step explanation:

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Paula's time swimming in the Ironman Triathlon was 1 hour 25 minutes. Her time biking was 5 hours longer than her swimming time.
Andre45 [30]

Answer: 12 hrs 40 mins

Step-by-step explanation:

The swimming time was 1 hour 25 minutes.

Her biking time was 5 hours longer than the swimming time so it was:

= 1 hr 25 mins + 5 hours

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Her running time was 4 hrs 50 mins.

Add them all up to find the amount of time ran. First add up the minutes:

= 25 + 25 +50

= 1 hr 40 minutes

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6 0
3 years ago
Study the figure.
tia_tia [17]

Answer:

So we know the formula to calculate the area of the circular sector:

S=(r^2*π*a)/306°=

(5^2*3.14*40°)/360°= (1000*3.14) /360=8.72cm^2 so the right alternative should be the first one ,A.

Step-by-step explanation:

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4 0
4 years ago
Help me answer this due today at 9:00!!!!
ratelena [41]

we conclude that the dimensions and area of the scaled figure are:

  • l₂ =  48 in
  • w₂= 32in
  • A₂ =  1,536 in^2

How to find the dimensions of the large rectangle?

First, we know that the large rectangle is the smaller rectangle rescaled, with a scale factor k = 4.

This means that each dimension of the smaller rectangle must be multiplied by 4 to get the correspondent dimension on the larger rectangle.

The dimensions of the smaller rectangle are:

l₁ = 12in

w₁ = 8in

Then the correspondent dimensions of the large rectangle are:

l₂ = 4*12in = 48 in

w₂= 4*8in = 32in

Now, the area of the large rectangle is given by the product between the two dimensions, we will get:

A₂ = 48in*32in = 1,536 in^2

Then, we conclude that the dimensions and area of the scaled figure are:

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If you want to learn more about rectangles:

brainly.com/question/17297081

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