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givi [52]
3 years ago
12

Find the solution 4y-x=5+2y 3x+7y=24

Mathematics
1 answer:
Orlov [11]3 years ago
3 0

Answer:

24

Step-by-step explanation:

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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
What are the solutions to the quadratic equation 5x2 + 60x = 0?
const2013 [10]
5x^2+60x=0
x(5x+60)=0

x=0
and
5x+60=0
5x=-60
x=-12

therefore, the first option is correct
8 0
4 years ago
Read 2 more answers
Drive 1,800 mi in 30 h
ella [17]
<span>1800 mi / 30 hr = 60 mi/hr


hope that helped</span>
6 0
3 years ago
Given a circle with a radius of 6, what the the length of an arc measuring 30 degrees
Mazyrski [523]
\bf \textit{arc's length}\\\\&#10;s=\cfrac{\theta \pi r}{180}\quad &#10;\begin{cases}&#10;r=radius\\&#10;\theta =angle~in\\&#10;\qquad degrees\\&#10;------\\&#10;r=6\\&#10;\theta =30&#10;\end{cases}\implies s=\cfrac{30\cdot \pi \cdot 6}{180}\implies s=\pi
6 0
4 years ago
How do you subtract a whole number and a mixed fraction
fredd [130]

Answer:

"The easiest way would be to turn the whole number into a fraction so for instance if the number was 2 it would become 16/8. You can then easily subtract 16/8 from 1/8 which would equal -15/8"(//answers.yahoo.com/).


Step-by-step explanation:

(//answers.yahoo.com/)


5 0
3 years ago
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