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3 years ago

Please assist me with these problems

Mathematics

1 answer:

IrinaK [193]3 years ago

4 0

Answer: see below

<u>Step-by-step explanation:</u>

Speed = | Velocity |

Velocity -14 20 -2 0 25 -15

Speed 14 20 2 0 25 15

Velocity -16 16

Speed 16 16

3 is greater then -4

|---------|---------|

-4 0 3

A velocity of -4 has a greater speed than a velocity of 3

Velocity -4 3

Speed 4 3

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nalin [4]

Answer:

Step-by-step explanation:

option (d) 4hrs 40mins

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2 years ago

Help as soon as possible pleaseee

KiRa [710]

Answer:

(3x + 2)(x-4)

Step-by-step explanation:

3x² - 10x - 8 = 0

(splitting the middle term)

3x² -12x + 2x -8 = 0

3x(x-4) + 2(x-4) = 0

(3x + 2)(x-4) = 0

(3x + 2)(x-4) is the correct answer (option a)

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2 years ago

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Sofia hits a softball straight up. the equation h= -16t^2 + 90t models the height h, in feet, of the ball after t seconds. How l

andrezito [222]

It is in the air 5.625 seconds.

Using the quadratic formula,

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}
\\
\\=\frac{-90\pm \sqrt{90^2-4(-16)(0)}}{2(-16)}
\\
\\=\frac{-90\pm \sqrt{8100-0}}{-32}
\\
\\=\frac{-90\pm \sqrt{8100}}{-32}=\frac{-90\pm90}{-32}
\\
\\=\frac{-90+90}{-32}\text{ or }\frac{-90-90}{-32}=\frac{0}{32}\text{ or }\frac{-180}{-32}
\\
\\=0\text{ or }5.625$

0 is when the ball is first launched, 5.625 is when it hits the ground again.

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2 years ago

(1.7 x 10^4) x (8.5 x 10 ^2)

vlabodo [156]

Answer:

144500

Step-by-step explanation:

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3 years ago

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Art [367]

Answer:

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Step-by-step explanation:

bc the x represents the amount of books you can get for 8 dollars per book and can be less than or equal to, but not greater than 50, the max amount you may spend

hope this helped :)

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3 years ago

Please assist me with these problems​

Please assist me with these problems