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2 years ago

Evaluate the function. f(x) = –2x2 – 10.0 Find f(-5) Answer: Submit Answer

Mathematics

1 answer:

Wittaler [7]2 years ago

3 0

Answer:

f(-5) = 0

Step-by-step explanation:

Step 1: Define

f(x) = -2x² - 10x

f(-5) is x = -5

Step 2: Substitute and Evaluate

f(-5) = -2(-5)² - 10(-5)

f(-5) = -2(25) + 50

f(-5) = -50 + 50

f(-5) = 0

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What value of x is the solution to the equation −3/2x−3/4=−1/5 ?

Ray Of Light [21]

Answer:

$\Longrightarrow: \boxed{\sf{x=-\dfrac{11}{30} }}$

Step-by-step explanation:

Isolate the term of x from one side of the equation.

First, add by 3/4 from both sides.

$\sf{-\dfrac{3}{2}x-\dfrac{3}{4}+\dfrac{3}{4}=-\dfrac{1}{5}+\dfrac{3}{4} }$

Solve.

⇒ = -3/2x=11/20

Then, you multiply by 2 from both sides.

2(-3/2x)=11*2/20

Solve.

11*2/20

11*2=22

22/20

Common factor of 2.

11/10

-3x=11/10

Divide by -3 from both sides.

$\sf{\dfrac{-3x}{-3}=\dfrac{\dfrac{11}{10}}{-3}}$

Solve.

$\Longrightarrow:\boxed{\sf{x=-\dfrac{11}{30} }}$

Therefore, the correct answer is D. x=-11/30.

I hope this helps! Let me know if you have any questions.

6 0

2 years ago

A rectangular room is 15 feet long and 10 feet wide. A scale drawing of the room has a width of 5 inches. What is the length of

snow_tiger [21]

Answer:

7.5

Step-by-step explanation:

4 0

2 years ago

Factor to solve X^2-2x-15=0

zzz [600]

Answer:

(x+3)(x-5)

Step-by-step explanation:

find two multiples of -15 that when added together create -2

those two numbers would be -5 and +3

-5x3=-15

-5+3=-2

4 0

2 years ago

Given 2x² = -8, x is A) -2 B) 2 C) 2i or -2i B) 4i or -4i NO LINKS!!!

faust18 [17]

Answer:

2x^2=-8

2x^2/2=-8/2

x^2=-4

x=2

Step-by-step explanation:

HOPE THAT THIS IS HELPFUL.

HAVE AN AWESOME DAY.

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2 years ago

WILL DO BRAINLIEST!!!! Suppose the store wants to earn a daily profit of $150 from the sale of soccer balls. To earn this profit

lara [203]

Think about it this way, what is 5x3??? 15 right. Ok then what is 5x30???? 150. So the store should sell each soccer ball for $5 each:)

6 0

3 years ago

Read 2 more answers