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4 years ago

Let f(x) = -3x + 7 and g(x) = 2x^2 - 8, (g×f)(x)

Mathematics

1 answer:

Andrei [34K]4 years ago

4 0

Answer:

-6x2(2 as a power) +4x hopefully this helps you

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Trisha was making muffins from scratch. She scooped out 2 cups of all-purpose flour and estimated that it weighed 250 grams. Whe

Mice21 [21]

Answer:

first, she should have measured one cup of flower then estimated how much another one would weigh, and added the results together.

Step-by-step explanation:

hope it helps have a good day

3 0

2 years ago

Help please thanks!!!!!!!!!!

sergeinik [125]

The answer is b please be thankful

6 0

3 years ago

Convert the Cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation.

SashulF [63]

<u>ANSWER</u>

${r}^{2} = 4 \cos2\theta$

<u>EXPLANATION</u>

The Cartesian equation is

${( {x}^{2} + {y}^{2} )}^{2} = 4( {x}^{2} - {y}^{2} )$

We substitute

$x = r \cos( \theta)$

$y = r \sin( \theta)$

and

${x}^{2} + {y}^{2} = {r}^{2}$

This implies that

${( {r}^{2} )}^{2} = 4(( { r \cos\theta) }^{2} - {(r \sin\theta) }^{2} )$

Let us evaluate the exponents to get:

${r}^{4} = 4({ {r}^{2} \cos^{2}\theta } - {r}^{2} \sin^{2}\theta)$

Factor the RHS to get:

${r}^{4} = 4{r}^{2} ({ \cos^{2}\theta } - \sin^{2}\theta)$

Divide through by r²

${r}^{2} = 4 ({ \cos^{2}\theta } - \sin^{2}\theta)$

Apply the double angle identity

$\cos^{2}\theta -\sin^{2}\theta= \cos(2 \theta)$

The polar equation then becomes:

${r}^{2} = 4 \cos2\theta$

7 0

3 years ago

4.5 x 10^16 molecules of carbon dioxide are equal to how many moles?

IgorC [24]

Step-by-step explanation:

1 mole of any substance = 6.022 * 10²³ molecules.

Number of moles of CO2

= (4.5 * 10¹⁶)/(6.022 * 10²³)

= 0.75 * 10^(-7)

= 7.5 * 10^(-8) mol.

6 0

3 years ago

Find the slope and Y interact from the following graph of liner liner equation

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

slope is rise over run 4/1 so the slope is 4 and intercept is 3.

6 0

3 years ago