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2 years ago

HELP PLEASE!!!! ILL MARK U BRAINLESS FIRST PERSON TO ANSWER

Mathematics

1 answer:

DerKrebs [107]2 years ago

3 0

Answer:

9/16 <fraction 0.5625 <decimal 56.25%

Step-by-step explanation:

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A ball is thrown from an initial height of 2 meters with an initial upward velocity of 9/ms . The ball's height h (in meters) af

Alecsey [184]

A ball is thrown from an initial height of 2 meters with an initial upward velocity of 9/ms

Balls height $h= 2 +9t -5t^2$

To find all values of t for which the ball's height is 3 meters

We plug in 3 for h and solve for t

$h= 2 +9t -5t^2$

$3 = 2 +9t -5t^2$

Solve for t

$0= -1+ 9t -5t^2$

$5t^2 - 9t + 1 = 0$

Solve using quadratic formula

$t= \frac{-b+- \sqrt{b^2-4ac} }{2a}$

$t= \frac{9+- \sqrt{(-9)^2-4*5*1} }{2*5}$

After simplifying this,

$t= \frac{9+\sqrt{61}}{10}$ = 0.11898

$t= \frac{9-\sqrt{61}}{10}$ = 1.68102

the values of t for which the ball's height is 3 meters= 0.12 sec , 1.68 sec

5 0

2 years ago

Pls pls help ???!!!!

Blizzard [7]

Answer 3x3.4

Step-by-step explanation:

8 0

2 years ago

(NO BOTS OR LINKS)

nlexa [21]

Answer:

D) division

Step-by-step explanation:

we know that a ratio is a quantitative relation between two numbers

so let's say

the ratio of boys to girls is 3:4

we know that for every 3 boys there are 4 girls

therefore it is a division operation

7 0

1 year ago

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The pH level of a solution measures how acidic or basic the solution is. Values between 0 and 7 are considered acidic while valu

Furkat [3]

Answer:

about 2.47

Step-by-step explanation:

Your calculator will tell you ...

$-\log{(3.4\times 10^{-3})}\approx 2.4685\approx\bf{2.47}$

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2 years ago

Write the denominator of the fractiona 7/20 as the product of prime factors

gtnhenbr [62]

Answer:

Step-by-step explanation:

prime factors of 20 = 2 * 2 * 5

$\frac{7}{20}=\frac{7}{2*2*5}$

5 0

2 years ago