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4 years ago

7

If f(x) = x^2 +x, find f(-3)

1 answer:

postnew [5]4 years ago

3 0

Answer 4x^2-2x
F(2x)=(2x)^2-(2x)=4x^2-2x

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52 POINTS. <br> ⦁ Solve for x

pentagon [3]

Answer:

x = - 2.5

Step-by-step explanation:

$3^{4x - 5}=(1/27)^{2x + 10}$
$3^{4x - 5}=(1/3^3)^{2x + 10}$
$3^{4x - 5}=(3^{-3})^{2x + 10}$
$3^{4x - 5}=3^{-3*(2x + 10)}$
4x - 5 = - 3*(2x + 10)
4x - 5 = - 6x - 30
4x + 6x = 5 - 30
10x = - 25
x = - 2.5

4 0

3 years ago

Find two consecutive odd numbers such that the sum of one-fifth of the smaller and four-sevenths of the larger is equal to fifty

Svet_ta [14]

75 and 77. 1/5 of 75 is 15 and 4/7 of 77 is 44.

3 0

3 years ago

Read 2 more answers

PLEASE HELP AND SHOW WORK I RLLY NEED TO PASS

Alex787 [66]

40×4×4=640

b=20 h=4

using formula:

1/2×base×height

1/2×20×4=40

its says scale by factor 4:

b=80 h=16

using formula:

1/2×base×height

1/2×80×16=640

answer------>>>>640cm^2

8 0

3 years ago

Based on the graph, which inequality is correct for a number that is to the right of -3?

RSB [31]

Positive infinity is going after three hope this helps

8 0

3 years ago

How many solutions does this system have?<br> 2x-4y=8

ExtremeBDS [4]

Answer:

1

Step-by-step explanation:

3 0

3 years ago