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3 years ago

Solve the equation. t-12=3

Mathematics

2 answers:

Elis [28]3 years ago

8 0

Answer:

t = 15

Step-by-step explanation:

t - 12 = 3

t = 3 + 12

t = 15

Dvinal [7]3 years ago

8 0

9-12=3
Hope this helps

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Okay now using distributive property write 2(4x-9) without parenthesis

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3 years ago

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2 years ago

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If f(x)=x^4+3x^3-x^2+6, find f(-3).

docker41 [41]

Answer:

f(-3) = -3

Step-by-step explanation:

Step 1: f(x) means "f of x" and f(-3) means "f of -3", so you have to replace all the "x" letters in the function with the value -3.

$f(x)=x^4+3x^3-x^2+6\\f(-3)=(-3)^4+3(-3)^3-(-3)^2+6$

Step 2: Apply the exponents. Make sure you remember to put in the -3 and not just 3.

$f(-3)=81+3(-27)-9+6$

Step 3: Use BEDMAS rules to complete the calculation.

$f(-3)=81-81-9+6$

$f(-3)=-3$

Therefore the answer is f(-3) = -3.

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3 years ago

The following is the formula for finding the area (A) of a trapezoid with height (h) and bases (b1) and (b2). A = 1/2h(b1 + b2)

charle [14.2K]

Answer:

Correct choice: B

Step-by-step explanation:

Equation Solving

The area of a trapezoid with height h and bases b1 and b2 is given by:

$\displaystyle A=\frac{1}{2}h(b_1+b_2)$

We must solve this formula for h.

First, multiply by 2 to eliminate denominators:

$\displaystyle 2A=h(b_1+b_2)$

Now, divide by b1+b2:

$\displaystyle \frac{2A}{b_1+b_2}=h$

Swapping sides:

$\displaystyle h=\frac{2A}{b_1+b_2}$

Correct choice: B

6 0

3 years ago