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Arte-miy333 [17]
3 years ago
13

If a 25 ft rope is cut into two sections with one section 4 times as long as the other section, how long is the shorter piece?

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
We are given the ratio
Long : short = 4:1
and the sum
Long+short=25
=>
long = 25*(long/(long+short)=25*(4/(4+1))=20
Short =25*(short/(long+short)=25*(1/4+1)=5
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In the United States, the mean and standard deviation of adult men's heights are 70 inches (5 feet 10 inches) and 4 inches, resp
Artyom0805 [142]

Answer:

P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)

And we can find this probability using the complement rule and the normal standard table:

P(z>0.5)=1-P(z

And the best solution would be:

c. 0.3085

Step-by-step explanation:

For this case we can convert all the values to inches in order to standardize the solution:

5ft * \frac{12 in}{1ft}= 60 in

6ft * \frac{12 in}{1ft}= 72 in

Let X the random variable that represent the heights of US mens, and for this case we know the distribution for X is given by:

X \sim N(70,4)  

Where \mu=70 and \sigma=4

We are interested on this probability

P(X>72)

We can use the z score formula given by:

z=\frac{x-\mu}{\sigma}

Using this formula we got:

P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)

And we can find this probability using the complement rule and the normal standard table:

P(z>0.5)=1-P(z

And the best solution would be:

c. 0.3085

5 0
3 years ago
I'M GIVING BRAINLIEST
Karolina [17]
I don’t get want u need help with.
4 0
3 years ago
The angles in a triangle are in the ratio 2 : 3:7.
Mademuasel [1]

Answer:

30°, 45° and 105°

Step-by-step explanation:

2 + 3 + 7 = 12 parts

180/12 = 15 degrees each part

First angle (2 parts)

2(15) = 30°

Second angle (3 parts)

3(15) = 45°

Third angle (7 parts)

7(15) = 105°

Hope this helps

3 0
1 year ago
Remainder of 42325/47=
m_a_m_a [10]
The answer is 900 r25
7 0
3 years ago
Yeahhh if you could help that would be great
stellarik [79]

Answer: what wrong

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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