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Vera_Pavlovna [14]
3 years ago
12

How can you solve this math problem 2/7y+5=9

Mathematics
2 answers:
kolbaska11 [484]3 years ago
7 0
2/7y+5=9
*it is important to note that 2 divided by 7 is the same as the fraction 2 over 7 or 2 7ths. Fractions are division.

1.) Multiple 7 by each side
2y+5=63

2.) subtract 5 from each side
2y=58

3.) divide each side by 2
y=29

4) Check your answer
2(29)+5=63
58+5=63
63=63

5.) y=29
nlexa [21]3 years ago
5 0
2/7y + 5 = 9

Subtract 5 from both sides

2/7y = 4

Multiply both sides by 7

2y = 28

Divide both sides by 2

<em><u>y = 14</u></em>
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A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, ho
Mice21 [21]

Answer:

3.8 seconds

Step-by-step explanation:

Given equation

h= -16t^2 + 60t + 5

When the ball hits the ground then height is 0

So we replace h with 0 and solve for t

0= -16t^2 + 60t + 5

a= -16 , b= 60 and c= 5

Apply quadratic formula to solve for t

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

=\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}

=\frac{-60+-28\sqrt{5}}{-32}

=\frac{4(-15+-7\sqrt{5})}{-32}

=\frac{(-15+-7\sqrt{5})}{-8}

Now make two fractions and solve for x

t= -\frac{7\sqrt{5}-15}{8}=-0.0815

t= \frac{7\sqrt{5}+15}{8}=3.83

So answer is 3.8 seconds


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Ilya [14]

Answer:

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Step-by-step explanation:

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Answer:

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