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olga55 [171]
2 years ago
5

Can someone help me with these three questions?

Mathematics
1 answer:
N76 [4]2 years ago
5 0

Answer:

1. =

2. <

3. <

Step-by-step explanation:

Note: When comparing decimals you always place both decimals right above each other.

1 is equal to because once you put a 0 behind the 2.1 they are both the same.

2.10

2.1    <add 0 as space holder

2 is less than because they are both negative you are looking for which one is closest to zero.

-4.5   <add 0 as place holder

-4.25   <closest to zero

3 is less than because \pi(pie) equals 3.141592654 which is less than 3.2.

3.141   <do not need to add whole decimal

3.2   <add two 0's as a placeholder

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Step-by-step explanation:

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On the coordinate plane below, triangle ABC was rotated
agasfer [191]

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Step-by-step explanation:

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2 years ago
2. Mourette is a member of her high school golf team. She hits a golf ball
Llana [10]

Answer:

a. h = 60t − 4.9t²

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Step-by-step explanation:

a. Given:

y₀ = 0 m

v₀ = 60 m/s

a = -9.8 m/s²

y = y₀ + v₀ t + ½ at²

h = 0 m + (60 m/s) t + ½ (-9.8 m/s²) t²

h = 60t − 4.9t²

b. When the ball lands, h = 0.

0 = 60t − 4.9t²

0 = t (60 − 4.9t)

t = 0 or 12.2

The ball lands after 12.2 seconds.

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t = -b / (2a)

t = -60 / (2 × -4.9)

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Alternatively, the maximum height is reached at half the time it takes to land.

t = 12.2 / 2

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After 6.1 seconds, the height reached is:

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7 0
3 years ago
Find the area of each figure. (Or as much as u can)
Elenna [48]

9514 1404 393

Answer:

  7. 91 m²

  8. 56 in²

  9. 105 in²

  10. 135 m²

Step-by-step explanation:

The formula for the area of a triangle is ...

  A = 1/2bh

where b is the base length, and h is the height perpendicular to the base.

The formula for the area of a trapezoid is ...

  A= 1/2(b1 +b2)h

where b1 and b2 are the lengths of the parallel bases, and h is the perpendicular distance between them. Note that this formula is virtually identical to the triangle formula, with the triangle 'b' being replaced by (b1+b2).

__

Fill in the numbers and do the arithmetic. The result is shown in the attachment. (We have used the triangle formula for all, with b1+b2 being used for 'b' to find the area of the trapezoids.)

  7. A = 1/2(14 m)(13 m) = 91 m²

  8. 56 in²

  9. A = 1/2(14 +16 in)(7 in) = 105 in²

  10. 135 m²

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3 years ago
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