3 years ago

Antonio did some chores for his mom. She gave him $7.00. Then he bought a

Mathematics

1 answer:

ASHA 777 [7]3 years ago

6 0

Answer:

$5.89

Step-by-step explanation:

if you do 12.89 minus the seven dollars you get 5.89

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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,

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

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3 years ago

Can someone help out I’m really slow at this and don’t understand it please:)

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Answer:

2) 160

3) 320

Step-by-step explanation:

you want to find out the slope so use the formula

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320-80=240

4-1=3

divide 240/3= 80

multiply 80 * (x) so if we try and find x=2 it would be 160

80 * 3 = 240

check your work by multiplying 80 and 4 (320) which is your y value! hope this helps!

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16 ,000 students are not neophytes.

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