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miskamm [114]
3 years ago
14

-15 = 5a +12- 2a + 6 -11 -3 10 7

Mathematics
2 answers:
Elis [28]3 years ago
8 0

Answer:

a = -11

Step-by-step explanation:

-15 = 5a +12- 2a + 6

Combine like terms

-15 = 3a +18

Subtract 18 from each side

-15-18 = 3a+18-18

-33 = 3a

Divide each side by 3

-33/3 = 3a/3

-11 =a

just olya [345]3 years ago
3 0

Answer:

A

Step-by-step explanation:

So we have the equation:

-15=5a+12-2a+6

On the right combine like terms:

-15=5a-2a+12+6\\-15=3a+18

Subtract 18 from both sides. The right cancels:

(-15)-18=(3a+18)-18\\-33=3a

Divide both sides by 3:

(-33)/3=(3a)/3\\a=-11

The answer is A, -11.

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Find the rate of change of the following table.
Serjik [45]

Answer:

\frac{1}{3}

Step-by-step explanation:

The rate of change is measured by the slope of the line in this linear table.

Calculate the slope m using the slope formula

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with (x₁, y₁ ) = (- 3, 0) and (x₂, y₂ ) = (3, 2) ← 2 ordered pairs from the table

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Vitek1552 [10]

Answer:

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8 0
3 years ago
A trail traveled 90 miles in 1.5 hours. At the same rate how long will it take the train to travel 330 miles
Arisa [49]
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8 0
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Sal places $500 in a retirement account that offers a return of 3.5% compounded annually . He will not deposit or withdraw any m
Tju [1.3M]

Answer:

f(t) = 500 * (1.035) ^ t

Step-by-step explanation:

A = p(1 + r/n)^nt

Where

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P = principal = $500

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n = number of periods = 1

t = number of years = t

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