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posledela
3 years ago
9

A) -3 · x = -21 b) -7x + 16 = 2x - 20

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:7

Step-by-step explanation:

A) x= -21/-3

= 7 answer

Angelina_Jolie [31]3 years ago
4 0

Answer:

Step-by-step explanation:

a) -3x = -21

Divide both sides by (-3)

-3x/-3 = -21/-3

x = 7

b)  -7x + 16 = 2x - 20

Subtract 16 from both sides

-7x + 16 -16 = 2x - 20 -16

-7x = 2x - 36

Subtract 2x from both sides

-7x -2x = 2x - 36 - 2x

-9x = -36

Divide both sides by (-9)

-9x/-9 = -36/-9

x = 4

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AleksAgata [21]

Answer:

16x³ + 9x² + 9x + 13

Step-by-step explanation:

Given

6x³ + 8x² - 2x + 4 and 10x³ + x² + 11x + 9

Sum the 2 expressions by adding like terms, that is

= (6x³ + 10x³) + (8x² + x²) + (- 2x + 11x) + (4 + 9)

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Answer:

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Step-by-step explanation:

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3 years ago
Let’s look at another one of Homer’s rocket launches. It was launched from ground level with an initial velocity of 208 feet per
kozerog [31]

Answer:

Smax = 676 ft

the maximum altitude (height) the rocket will attain during its flight is 676 ft

Step-by-step explanation:

Given;

The height function S(t) of the rocket as;

S(t) = -16t2 + 208t

The maximum altitude Smax, will occur at dS/dt = 0

differentiating S(t);

dS/dt = -32t + 208 = 0

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t = 208/32

t = 6.5 seconds.

The maximum altitude Smax is;

Substituting t = 6.5 s

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8 0
3 years ago
Please help
Ann [662]

Answer:

1/60 probabiliity

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You have two independent events that you want to put together.

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3 years ago
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