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True [87]
3 years ago
6

Please Help :D 助けてください

Mathematics
1 answer:
qaws [65]3 years ago
8 0

Answer:

1. false

2. true

3. false

4. false

Step-by-step explanation:

1. 128 is not equal to 125

2. 119.7 = 119.7

3. 13.2 is not equal to 1.32

4. 5.88 is not equal to 12

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The height in feet above the water of a diver can be modeled by ℎ() = −16*2 − 16 + 192, where t is the time in seconds after the
Maurinko [17]

h(t) is the height of the diver in feet above the water

Now it asks about the time at which diver reaches the water

When diver reaches the water , the height of diver from water should be zero

So we plug h(t) =0

So

-16t^2 -16 t +192 =0

divide whole equation by -16

t^2 +t -12 =0

we can now factor the quadratic equation

So we get

(t+4)(t-3) =0

plug each factor equal to zero and solve for t

t+4 =0 and t-3 =0

So t=-4 and t=3

Now time cannot be negative , So t=3

So time = 3 seconds

It takes 3 seconds for the diver to reach the water

3 0
3 years ago
What is the solution to the system of equations?<br><br> y = 2x + 4<br> y = -x + 1
den301095 [7]

Step-by-step explanation:

start by setting each equation to each other

2x + 4 =  - x + 1

first we are going to subtract 2x from both side of the equation

4 =  - 3x + 1

now subtract 1 from both sides

3 =  - 3x

now divide by -3 on both sides

5 0
3 years ago
What is the common factors of 36 and 54
borishaifa [10]
36×3 and 54×2 is 108
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3 years ago
A 50 meter chain with uniform density and a mass of 40 kilograms is hanging from the roof of a building under construction. How
Brums [2.3K]

Answer:

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Step-by-step explanation:

WD = mgh

= 40 × 9.8 × 50

= 19600 Nm

8 0
3 years ago
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Answer:

90°

Step-by-step explanation:

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