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3 years ago

Which of the following is a solution to the system of equations? 4 + y = -x y = 2x - 10

Mathematics

1 answer:

kiruha [24]3 years ago

3 0

Answer:

x=3, y= -6

Step-by-step explanation:

make 4+y= -x as equation (1) and make y=2x-10 as equation (2, then you must find a third equation either from equation (1)or (2). If you choose to find equation (3) from (2) it will be y=2x-10 , then substitute equation (3) from (1) because you can't choose (2) , then it will be 4+(2x-10)= -x

the answer will be x =2

substitute x from equation (3)

y=2x-10

y=2 (2)-10

y= -6

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3 years ago

What does x equal x + 3 ≤ –5 + 2x

Anna [14]

X+3≤ -5+2x

Add 5 to the other side. (the inverse of subtraction, since 5 is negative)

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Subtract x on both sides.

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3 years ago

The table below represents the function F. 3 7 F(x) 4 15 5 31 7 127 8 255 The equation that represents this function is?

timurjin [86]

The table is an exponential function, and the equation that represents this function is $f(x) =2^x -1$

<h3>The equation of the table</h3>

The table is given as:

x F(x)

4 15

5 31

7 127

8 255

Rewrite the table as:

x F(x)

4 16 - 1

5 32 - 1

7 128 - 1

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Express as a base of 2

x F(x)

4 2⁴ - 1

5 2⁵- 1

7 2⁷ - 1

8 2⁸ - 1

Notice that the function is 1 subtracted from 2 raised to the power of the input.

This is represented as:

$f(x) =2^x -1$

Hence, the equation of the table is $f(x) =2^x -1$

Read more about exponential functions at

brainly.com/question/9608962

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1 year ago

Two digits of the 5-digit number A = 74*9* are missing. Fill in the missing digits so that the number obtained is the smallest p

e-lub [12.9K]

Answer:

A = 74295.

Step-by-step explanation:

74*9*

- the last number must be a 0 or a 5.

So we try 74090/45 - not an integer

74095/45 = No

74190/45 No

74195/45 No

74295 / 45 = 1651 So that's it,

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3 years ago

Read 2 more answers

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Ludmilka [50]

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