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natka813 [3]
3 years ago
13

A ball is thrown into the air The height, h in feet, of the ball can be modeled by the equation h=-16t^2+20t+6, where t is the t

ime, in seconds, the ball is in the air. How long will it take the ball to reach its maximum height? What is the Maximum height?
Mathematics
1 answer:
Lina20 [59]3 years ago
3 0
The ball will take \frac{5}{8} seconds to reach its maximum height.
The maximum height is 12 \frac{1}{4} feet.
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3 years ago
Jason has 3 1/2 candy bars. He wants to share the candy bars with his friends. He gives as many of his friends as possible 3/4 o
denis-greek [22]

Answer:

He can give 4 friends pieces of a candy bar.

Step-by-step explanation:

Each person has to have exactly 3/4 a candy bar.

If you divide all 3 1/2 candy bars into fourths, you will have 14 pieces.

So then, take out portions of 3 at a time, so take out 3 of these pieces, you have one friend. Take out another 3 pieces you now took 6 out and gave to 2 friends. Take another three and you've taken out 9 pieces for 3 friends. Take one more set of 3 pieces you now have taken out 12 pieces for 4 friends. There are only 2 more pieces left which is not enough for another friend so you have 4 friends that got some chocolate.

Hope this helps!! :)

5 0
3 years ago
Find the sum of the polynomials below: (7x8 + 3x - 3) + (4x8 + 2x + 5)
Ipatiy [6.2K]
7x^8+3x-3
+4x^8+2x+5
=11x^8+5x+2
6 0
4 years ago
the annual interest on 17,000 investment exceeds the interest on an 11,000 investment by 308 . the 17,000is invested at a 0.4% h
solmaris [256]

keeping in mind that

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}

x =  percent rate for the 17000 investment.

y = percent rate for the 11000 investment.


so the amount for the 17000 interest will just be (x/100) * 17000, or namely 170x.

and the amount of interest earned for the 11000 is (y/100) * 11000, or just 110y.

now, regardless of what "x" and "y" are, we know that the interest from the 17000 is higher by 308 bucks, therefore 170x = 110y + 308.

we also know that the rate of <u>x</u> is higher as well than <u>y</u> by 0.4%, so then x = y + 0.4.


\bf \begin{cases} 170x=110y+308\\ \boxed{x}= y +0.4\\[-0.5em] \hrulefill\\ 170\left( \boxed{y+0.4} \right)=110y+308 \end{cases} \\\\\\ 170y+68=110y+308\implies 60y=240\implies y=\cfrac{240}{60}\implies \blacktriangleright y=\stackrel{\%}{4} \blacktriangleleft \\\\\\ x=y+0.4\implies \blacktriangleright x=\stackrel{\%}{4.4} \blacktriangleleft

3 0
4 years ago
FIST ONE TO AWNSER GETS BRAINLYIST AND 50 points IF CORRECT HURRY!!!!!!!!
topjm [15]

Answer:

1 3, and 4 ones are correct

Step-by-step explanation:

jk

4 0
3 years ago
Read 2 more answers
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