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Taya2010 [7]
3 years ago
9

Justin made a scale drawing of a sailboat he saw at the harbor. The length of the actual boat is 24 feet, and the mast is 20 fee

t high. In Justin's sketch, the boat is 2 centimeters longer than the mast. What is the length of the boat on his sketch?

Mathematics
2 answers:
Aleks04 [339]3 years ago
4 0
12cm is the answer hope this helps
Paladinen [302]3 years ago
3 0
The length of the boat on his sketch is 12 cm
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The lengths of text messages are normally distributed with a population standard deviation of 4 characters and an unknown popula
umka21 [38]

Answer:

The answer is "(25.32, 30.68)"

Step-by-step explanation:

Given:

\bar x = 28\\\\ \sigma = 4\\\\n =26\\\\

When 98\% confidence level so, the z:

\alpha = 1 - 98\% = 1 - 0.98 = 0.2\\\\\frac{\alpha}{2} =\frac{0.02}{2} = 0.01\\\\Z_{\frac{\alpha}{2}} = Z_{0.01} = 1.645\ \ \  ( Using \ z \ table )\\\\

E = Z_{\frac{\alpha}{2} \times ( \frac{\sigma}{\sqrt{n}})  

= 1.645 \times (\frac{4}{\sqrt{26}})\\\\=2.68

When  98% confidence interval estimate of the population mean  is,

\bar x - E < \mu < \bar x + E\\\\28 - 2.68 <  \mu < 28 + 2.68\\\\25.32 <  \mu < 30.68\\\\(25.32,  30.68)\\\\

7 0
3 years ago
Please help me.
Bezzdna [24]

It would not because 3/4 of 20 is 15 so that would fit, but 3/4 of 16 is 12, so it would not fit there.

3 0
3 years ago
In ΔSTU, the measure of ∠U=90°, the measure of ∠T=47°, and ST = 7.2 feet. Find the length of US to the nearest tenth of a foot.​
Sauron [17]

Answer:

US=5.3\ ft

Step-by-step explanation:

we know that

In the right triangle STU

The sine of angle T is equal to the opposite side angle T divided by the hypotenuse

sin(T)=\frac{US}{ST}

substitute the values

sin(47\°)=\frac{US}{7.2}

US=(7.2)sin(47\°)=5.3\ ft

7 0
3 years ago
Read 2 more answers
Find the sum of the "n" terms of the series:<br> Sn=1²+3²+5²+...+(2n-1)²​
djverab [1.8K]

Answer:

84

Step-by-step explanation:

12 + 32 + 52 + 72

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5 0
4 years ago
HELP ASAP TEST I NEED HELP
Crazy boy [7]

Integers

99, 43, -31, 81, -202, -3

the rest numbers I didn't mention is not integer

4 0
2 years ago
Read 2 more answers
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