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Vlad [161]
3 years ago
11

Please help quickly! Also explain.

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{QR}{TU} = \frac{PR}{SU}, substitute values

\frac{3.3}{TU} =  \frac{2.7}{1.8} ← cross- multiply

2.7TU = 3.3 × 1.8 ← divide both sides by 2.7

TU = \frac{3.3(1.8)}{2.7} → A

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In the figure, GK bisects FGH
bija089 [108]

Answer:

w = 7

Step-by-step explanation:

Given:

m<FGK = (7w + 3)°

m<FGH = 104°

angle bisector of <FGH = GK

Required:

Value of w

SOLUTION:

Since GK bisects angle FGH, it divides the angle into two equal parts. Therefore, the following equation can be generated to find the value of w:

m<FGH = 2*m<FGK

104 = 2*(7w + 3) (substitution)

Divide both sides by 2

\frac{104}{2} = \frac{2*(7w + 3)}{2}

52 = 7w + 3

Subtract 3 from each side

52 - 3 = 7w + 3 - 3

49 = 7w

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\frac{49}{7} = \frac{7w}{7}

7 = w

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8 0
3 years ago
The mean life of a particular brand of light bulb is 1200 hours. if you know that at about 95% of this brand of bulbs will last
Snowcat [4.5K]
<span>204
   First, lookup a standard normal table and see what the z-score is for 0.025 (one half of 100% - 95%) to allow for equal sized tails. You should find that the z-score is 1.96. That means that 95% of the time, the value should be within 1.96 standard deviations of the mean. Now let's calculate the standard deviation. 800 is 800 - 1200 = -400 to the left of the mean of 1200. 1600 is 1600 - 1200 = 400 to the right of the mean of 1200. So we are an equal distance of 400 on both sides of the mean. And we know from the z-score of 1.96, that we're 1.96 standard deviations from the mean. So a little division will give us the standard deviation. Which is: 400 / 1.96 = 204.0816327
   So the standard deviation of the light bulbs is 204</span>
4 0
3 years ago
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lord [1]
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8 0
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crimeas [40]
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a^6b^12
4 0
3 years ago
Round 48.078 to the nearest tenth<br><br> 48.1,<br><br> 48.08,<br><br> 50,<br><br> or,<br><br> 48.8
musickatia [10]

your  answer is 48.1

7 0
3 years ago
Read 2 more answers
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