3 years ago

If h(x) =2x^2-3x, find h(-6)

Mathematics

1 answer:

nekit [7.7K]3 years ago

6 0

90.

You can get this by plugging into the equation.

h(-6) = 2(-6)^2 - 3(-6)
h(-6) = 72 + 18
h(-6) = 90

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Find (fºg)(1) f(x) = x² - 1 g(x) = √x A.0 B.1 C.4 √2 D. √8

Savatey [412]

Given:

The function are

$f(x)=x^2-1$

$g(x)=\sqrt{x}$

To find:

The value of $(f\circ g)(1)$ .

Solution:

We have,

$f(x)=x^2-1$

$g(x)=\sqrt{x}$

We need to find the value of $(f\circ g)(1)$ .

$(f\circ g)(1)=f(g(1))$ $[\because (f\circ g)(x)=f(g(x))]$

$(f\circ g)(1)=f(\sqrt{1})$ $[\because g(x)=\sqrt{x}]$

$(f\circ g)(1)=f(1)$

$(f\circ g)(1)=(1)^2-1$ $[\because f(x)=x^2-1]$

$(f\circ g)(1)=1-1$

$(f\circ g)(1)=0$

The value of $(f\circ g)(1)$ is 0.

Therefore, the correct option is A.

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3 years ago

In a lab, a substance was heated by 48 Degrees Celsius over a period of 8 hours at a constant rate. what was the change in tempe

galben [10]

Answer: The change in temperature each hour was 6 degrees celsius.

Step-by-step explanation: 48 divided by 8 = 6

4 0

3 years ago

The adams family is remodeling their family room. the room measures 14 feet by 20 feet, and the contractor wants $35 per square

OverLord2011 [107]

14 * 20 = 280 sq ft
$35 * 280 sq ft = $ 9,800

7 0

4 years ago

Read 2 more answers

e. Noah earned v dollars over the summer. Mai earned m dollars, which is 45 dollars more than Noah did. What's the answer?

Veseljchak [2.6K]

Answer:

v=m-45

Step-by-step explanation:

6 0

3 years ago

An angle measures 152° less than the measure of its supplementary angle. What is the measure of each angle?

GrogVix [38]

Two supplementary angles when added together need to equal 180 degrees.

Let the first angle = X

The second angle would then be X - 152

Add them together to equal 180:

X + X - 152 = 180

Simplify:

2X -152 = 180

Add 152 to each side:

2X = 332

Divide both sides by 2:

X = 332 / 2

X = 166

The first angle = X = 166 degrees.

The second angle = X - 152 = 166 - 152 = 14 degrees.

The angles are 166 and 14

5 0

3 years ago