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avanturin [10]
3 years ago
10

Please help i need to get this done by tomorrow

Mathematics
2 answers:
daser333 [38]3 years ago
6 0
It will take 9 hours because if you multiply 45 x 9 it will give you 405

Mumz [18]3 years ago
3 0
Will take 9 hours in total
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Please help! Brainliest Answer! Thank You!
ziro4ka [17]

Answer:

B) 63°

Step-by-step explanation:

<u>Step 1:</u> find the angle beside x (inside the pentagon)

<em>*A pentagon has a total of 540°</em>

119 + 100 + 116 + 88 = 423

540 - 423 = 117

<u>Step 2:</u> x is a supplementary angle, which means it's angle adds up to 180°

Since we know the other angle is 117°, we just subtract that from 180

180 - 117 = 63

x = 63

5 0
3 years ago
A ball, thrown vertically upwards, from the ground, has its height h (in meters) expressed as a function of time t (in seconds),
Ivenika [448]

Answer:

pen

Step-by-step explanation:

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6 0
3 years ago
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Solve this equation.<br> 2/3x−1/5x=x−1
KonstantinChe [14]

Answer:

 =  1  7/8

Step-by-step explanation:

6 0
3 years ago
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Please help!!!!!!!! What is the measure of angle 4?
Lorico [155]

Answer:

30°

Step-by-step explanation:

<4=<2=30

(vertical opposite angles are equal)

6 0
3 years ago
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The main cable of a suspension bridge forms a parabola, described by the equation y = a(x - h)2 + k, where y is the height in fe
nirvana33 [79]
Refer to the diagram shown below.

When x = 30 ft, the cable is at 15 ft, therefore y(30) = 15.
That is,
a(30 - h)² + k = 15            (1)

Also, because the distance between the supports is 90 ft, therefore
y(0) = 6 ft, and y(90) = 6 ft
That is,
a(-h)² + k = 6                 (2)
a(90 - h)² + k = 6          (3)

From (2) and (3), obtain
a(90 - h)² = ah²
90² - 180h + h² = h²
180h = 90²
h = 45 ft.

From (1) and (2), obtain
225a + k = 15
2025a + k = 6

Therefore
1800a = -9
a = - 0.005
k = 15 - 225(-0.005) = 16.125 ft

Answer:
The equation for the cable is
y = - 0.005(x - 45)² + 16.125 

A graph of the solution verifies that the solution is correct.

6 0
3 years ago
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