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miss Akunina [59]
3 years ago
15

60% of 45 is what number?

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

27

Step-by-step explanation:

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Tanya wants to find the height of the tree. She walks away from the base of the tree so the tip of her shadow coincides with the
Vikki [24]
<span><u>Answer </u>
18 feet and 4.5 inches

<u>Explanation </u>
You are going to use the concept of similar triangle.
∆CED≡∆CBA
This is because they share the angle at C and also they both have an angle of 90o.
Let EC = X, then BE = 2.5X. So, BE = (X + 2.5X) = 3.5X
The scale factor EC/BC=x/3.5x=2/7
EC/BC=ED/BA=2/7
BA=7/2×63 in
The height of the tree = 220.5 inches. This is equal 18 feet and 4.5 inches.  
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3 0
3 years ago
Joe paid $10 for 8 batteries. Which graph represents the cost of the batteries he bought?
kolbaska11 [484]

Answer:

the 1st graph that has a point of (4,5)

8 0
3 years ago
3x-10&gt;4+7x-3<br><br><br> Please explain.
larisa [96]

3x-10>4+7x-3

3x-10>1+7x

-4x-10>1

-4x>11

x<-11/4

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7 0
3 years ago
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A Factory produces 24532 bulbs in a month. What is its annual<br> production?
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294, 384

Step-by-step explanation:

3 0
3 years ago
Marine biologists have been studying the effects of acidification of the oceans on weights of male baluga whales in the Arctic O
PSYCHO15rus [73]

Answer:

c. 61.25 kg

Step-by-step explanation:

The margin of error in estimating the true mean weight of male baluga whales in the Artic Ocean.

a. 15.31 kg

b. 51.40 kg

c. 61.25 kg

d. 80.49 kg

Margin of Error Formula= z × Standard deviation/√n

95% confidence interval = 1.96

Standard deviation = 125kg

n = 16 samples

Margin of error= 1.96 × 125/√16

= 1.96 × 125/4

= 245/4

= 61.25kg

The margin of error in estimating the true mean weight of male baluga whales in the Artic Ocean is 61.25kg

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3 years ago
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