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slamgirl [31]
2 years ago
5

What % of $100 = $90

Mathematics
2 answers:
Harlamova29_29 [7]2 years ago
6 0

Answer: 90%

Step-by-step explanation:

Pani-rosa [81]2 years ago
5 0

Answer:

100/90

Step-by-step explanation:

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TRIANGLE CONGRUENCE! PICTURE ADDED. How is QTP congruent to SPT?
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Answer:

The triangles are congruent because:

  1. QP = ST
  2. angle P = angle T
  3. the side PT is in both triangles

We know when 2 sides of two triangles and the angle between them is congruent, the triangles are congruent.

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3 years ago
Tia made a scale drawing of the White House for her history project. The actual length of the building is 168 feet, and its widt
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According to the data set, where should the
tester [92]

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Step-by-step explanation:

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2 years ago
A light shines from the top of a pole 50ft high. a ball is dropped from the same height from a point 30 ft away from the light.
belka [17]
The speed of the ball is 
ds/dt = 32t
At t =1/2 s
ds/dt = 16 ft/s
The distance from the ground
50 - 16(1/2)^2 = 46 ft
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7 0
3 years ago
Which answer is the approximate standard deviation of the data set?
Anna35 [415]

Answer:

3.4

Step-by-step explanation:

Standard deviation of a population is defined as:

σ² = ∑(xᵢ − μ)² / n

The standard deviation of a sample is defined as:

s² = ∑(xᵢ − x)² / (n - 1)

It's not clear which one we have, so let's calculate both.

First, we must find the mean.

μ = (5+12+15+10+12+6+8+8) / 8

μ = 9.5

Now we find the squares of the differences:

(5-9.5)² + (12-9.5)² + (15-9.5)² + (10-9.5)² + (12-9.5)² + (6-9.5)² + (8-9.5)² + (8-9.5)²

= 80

Divide by n:

σ² = 80 / 8

σ² = 10

And take the square root:

σ = √10

σ ≈ 3.2

That's not one of the answers, so let's try the standard deviation of a sample instead of a population.

Instead of dividing by n, we'll divide by n-1:

s² = 80 / 7

And take the square root:

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s ≈ 3.4

So that must be it.

6 0
3 years ago
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