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beks73 [17]
3 years ago
6

2

Mathematics
1 answer:
Elan Coil [88]3 years ago
5 0

Answer: Initial height before launch

Step-by-step explanation:

Given

The equation y=-9.8t+109.7t+7.4  the height of toy rocket after t sec

when the rocket is launched, time is t=0

Substituting 0 for t in the equation

\Rightarrow y(0)=-9.8(0)+109.7(0)+7.4\\\Rightarrow y(0)=7.4

Here, 7.4 represents that rocket is already at a height of 7.4 m before the launch.

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Irina-Kira [14]

Answer:

x > 125

Step-by-step explanation:

7 0
3 years ago
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The brain volumes ​(cm cubed​) of 20 brains have a mean of 1111.2 cm cubed and a standard deviation of 125.3 cm cubed. Use the g
valentina_108 [34]

Answer:

Yes, the value 1411.8 cm³ is significantly high.

Step-by-step explanation:

Consider the provided information.

The brain volumes ​(cm cubed​) of 20 brains have a mean of 1111.2 cm cubed and a standard deviation of 125.3 cm cubed.

The range rule of thumb to identify the limits separating values that are significantly low or significantly high is:

The range rule of thumb identifying significant values are as.

Significantly low values are μ-2σ

Substitute the μ = 1111.2 and σ = 125.3 in above formula.

1111.2-2(125.3)=860.6

Significantly high values are μ+2σ

Substitute the μ = 1111.2 and σ = 125.3 in above formula.

1111.2+2(125.3)=1361.8

The value is significantly high due to the value 1411.8 cm³ is not lie between the values 860.6 cm³ and 1361.8 cm³.

Hence, Yes, the value 1411.8 cm³ is significantly high.

3 0
3 years ago
Maria is putting up a shelf on a wall in her closet. The figure below shows triangle ABC, which
Degger [83]
To solve this you will need to know the Pythagorean therum A^2+B^2=C^2

24^+B^2=28^2
576+B^2=784
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B^2=208
Square root of 208 is about 14.42 and that is the length of the wall
5 0
3 years ago
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Identify the transformed coordinates of the line segment A (4, 7) and B (9, 7)
arsen [322]

Answer: A (4, -7) B (9, -7)

Step-by-step explanation:

When it’s reflected over the x-axis, the y coordinates become negative but the x coordinates don’t change

x coordinates: 4, 9

y coordinates: 7, 7

Reflected over x-axis: (4, -7), (9, -7)

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3 years ago
Help me!!!!!!!!!!!!!!!
Bess [88]

Answer:

Start with have a good day

Step-by-step explanation:

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3 years ago
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