2 years ago

60 - 3d + 20 - 6 = 4d

Mathematics

2 answers:

Andrew [12]2 years ago

7 0

7 is the answer I’m pretty sure

iragen [17]2 years ago

4 0

60-3d + 20-6 =4d
74-3d =4d
-3d =4d -74
-7d = -74
D=74/7

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Margarita [4]

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Therefore,

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2 years ago

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Lisa [10]

Answer:

2.62 seconds

Step-by-step explanation:

Let

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we know that

When the ball hits the ground, the height is equal to zero

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The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$

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in this problem we have

$-16t^2+40t+5=0$

$a=-16\\b=40\\c=5$

substitute in the formula

$t=\frac{-40\pm\sqrt{40^{2}-4(-16)(5)}} {2(-16)}$

$t=\frac{-40\pm\sqrt{1,920}} {-32}$

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4 0

2 years ago

83 tens times 2 tens

gizmo_the_mogwai [7]

Answer:

16600 should be the answer.

Step-by-step explanation:

because 830 times 20 is 16600.

hope i helped

6 0

3 years ago