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r-ruslan [8.4K]
2 years ago
10

I WILL GIVE AWAY ALL OF MY 50 POINTS FOR AN ANSWER!!!!! What is the surface area of the box if it is scaled up by a factor of 10

? The surface area is 150 centimeters.
Mathematics
1 answer:
MArishka [77]2 years ago
7 0

Answer:

60

Step-by-step explanation:

you multiply 150*4 then divide that by 10 and that's your answer

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What is the answer to 8/? + 5/? = 7/?
disa [49]

Step-by-step explanation:

well, the first solution that comes to my mind is :

8/4 + 5/1 = 7/1

2 + 5 = 7

the reason : the only numerator I can "cut" into integer pieces is 8.

5 and 7 are prime numbers.

so, it tried to keep 5 and 7 whole, and then add a part of 8 to make this equation true. and that worked right away.

7 0
2 years ago
In 2008, data from the Center for Disease Control revealed that 28.5% of all male teenagers, aged 18-19 and attending U.S. colle
m_a_m_a [10]

Answer:

a) H0 : u = 28.5%

H1 : u < 28.5%

b) critical value = - 1.645

c) test statistic Z= - 1.41

d) Fail to reject H0

e) There is not enough evidence to support the professor's claim.

Step-by-step explanation:

Given:

P = 28.5% ≈ 0.285

X = 210

n = 800

p' = \frac{X}{n} = \frac{210}{800} = 0.2625

Level of significance = 0.05

a) The null and alternative hypotheses are:

H0 : u = 28.5%

H1 : u < 28.5%

b) Given a 0.05 significance level.

This is a left tailed test.

The critical value =

-Z_0.05 = -1.645

The critical value = -1.645

c) Calculating the test statistic, we have:

Z = \frac{p' - P}{\sqrt{\frac{P(1-P)}{n}}}

Z = \frac{0.2625 - 0.285}{\sqrt{\frac{28.5(1-28.5)}{800}}}

Z = -1.41

d) Decision:

We fail to reject null hypothesis H0, since Z = -1.41 is not in the rejection region, <1.645

e) There is not enough evidence to support the professor's claim that the proportion of obese male teenagers decreased.

5 0
3 years ago
ANSWER QUICK FOR A. AND B. !
sladkih [1.3K]

Answer: a=4

b=1600x

Step-by-step explanation:

7 0
2 years ago
How do you calculate the Hypotenuse?
julia-pushkina [17]
Formula:
a^2+b^2=c^2

c^2: Is the hypotenuse.

For  a^2 and b^2, you have to multiply both it by its self.

Then, add both.

Next, you square root it.

Example:

a^2+b^2=c^2

14^2+7^2=c^2

196+49=c^2

245=c^2

15.64=c^2
4 0
3 years ago
A novelist can write 2 1/4 pages in 3/4 hours. EXPRESS HER WRITING SPEED AS A UNIT RATE
MissTica

Answer:1/30 page per minute

Step-by-step explanation:

2 1/2 pages =3/2 pages.

3/4 hrs=45 minutes

Hence the number pages he can type per minute =3/2 pages/45 minutes=3/2×1/45=1/30page per minute

5 0
3 years ago
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