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3 years ago

B

Mathematics

2 answers:

zhuklara [117]3 years ago

4 0

Answer:

90 degree is my guess please

bezimeni [28]3 years ago

4 0

Answer:

Step-by-step explanation:

it's 90 because if it needs to be in line with a it has to be rotated a bit and since the lowest is 90 the answer is 90

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An object is launched at 9.8 meters per second from 73.5 meter tall platform. The objects height s (in meters) after t seconds I

Ede4ka [16]

Answer:

The object hits the ground in 5 seconds.

Step-by-step explanation:

Given : An object is launched at 9.8 meters per second from 73.5 meter tall platform. The objects height s (in meters) after t seconds I’d given by the equation $s(t)= -4.9t^2-9.8t+73.5$ .

To find : Use the factoring to determine when the object hits the ground ?

Solution :

When the object hits the ground the distance is zero.

i.e. s(t)=0

So, $-4.9t^2-9.8t+73.5=0$

Applying quadratic formula, $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Here, a=-4.9, b=-9.8 and c=73.5

$t=\frac{-(-9.8)\pm\sqrt{(-9.8)^2-4(-4.9)(73.5)}}{2(-4.9)}$

$t=\frac{9.8\pm\sqrt{1536.64}}{-9.8}$

$t=\frac{9.8\pm 39.2}{-9.8}$

$t=1\pm 4$

$t=1+4,1-4$

$t=5,-3$

Reject t=-3

Therefore, the object hits the ground in 5 seconds.

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3 years ago

Identify the corresponding word problem given the equation: x = 4 × 9

Alex777 [14]

My answer is each person paid $7.20.

36 divided by 5 is 7.20.

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4 years ago

6 ( p + 6 ) − 3 ( p + 3 )

MAXImum [283]

Answer:

3p +27

Step-by-step explanation:

6( p+6) - 3(p+3)

Distribute

6p +36 - 3p -9

Combine like terms

6p -3p +36-9

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Makovka662 [10]

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