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2 years ago

How many x-intercepts are there in y = –3x2 + 4x + 4

2 answers:

8 0

You can factor it to find the answer:

<span>–3x^2 + 4x + 4
</span>–(3x^2 - 4x - 4)
–(3x + 2)(x - 2)

x=-2/3 or 2, which means that there are x intercepts, at -2/3 and 2.

Yakvenalex [24]2 years ago

7 0

Y = -3x^2 + 4x + 4

Educated guess: There may be about 2 x - intercepts in the equation.

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lara31 [8.8K]

Answer:

1: 10x-5

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2 years ago

Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° lati

Varvara68 [4.7K]

Step 1.

Calculate measure of angle α:

$47^o-38^o=9^o$

Step 2.

Calculate what fraction of the angle 360° is the angle α:

$\dfrac{9^o}{360^o}=\dfrac{1}{40}$

Step 3.

Calculate the circumference of the Earth (circle):

$C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi$

Step 4.

The length of arc is equal 1/40 of the circumference:

$\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi$

$\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi$

<h3>Answer: A) 628 miles</h3>

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2 years ago

Find the slope between the points (2,9) and (3,1) *<br> Please I need help immediately

Feliz [49]

Answer:

Step-by-step explanation:

Distance between x's (Δx)

This field is calculated automatically, you cannot change it's value manually.

Distance between y's (Δy)

d = √(Δy2 + Δx2) = √(12 + 02) = √1 = 1

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2 years ago

What is negative 4/5 plus negative 3/8

xxMikexx [17]

I hope this helps you

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2 years ago

Read 2 more answers

The shoe store has twice as many black shoes as it does brown shoes. The total number of shoes is 66. How many brown shoes are t

fredd [130]

<span>x=number of brown shoes
2x=number of black shoes (twice as many black shoes as brown shoes)
so x+2x=66
add like terms 3x=66
solve for x by dividing 3; x=22
so there are 22 brown shoes and 44 black shoes (2 x 22= 44)</span>

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2 years ago