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3 years ago

Use the properties of exponents to rewrite the expression 3•b•b•b•b•b•c•c•c•c•c

Mathematics

2 answers:

anygoal [31]3 years ago

8 0

Answer: I'm not sure but I think it 3*b^5*c^5

Step-by-step explanation: Normally, I can answer this question without a doubt but I am quite unfamiliar with my laptop so please excuse me if I answer this incorrectly.

frosja888 [35]3 years ago

3 0

$3\cdot b\cdot b\cdot b\cdot b\cdot b\cdot c\cdot c\cdot c\cdot c\cdot c =3b^5c^5$

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What is the sum of mza+ m2b+ m2c?

maksim [4K]

A= 180-65 =115
B= 180-43=137
C=180-72=108
115+137+108 = 360
Or triangle supplementary angles
So the outer angle is 360

4 0

3 years ago

If you add 1/3 of a number to the number itself, you get 16. What is the number?

Klio2033 [76]

Let, the number = x
x/3 + x = 16
x+3x /3 = 16
4x = 16*3
x = 48/4
x = 12

So, the number would be 12

Hope this helps!

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3 years ago

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2 years ago

Two college roommates have each committed to donating to charity each week for the next year. The roommates’ weekly incomes are

schepotkina [342]

Answer:

C. 5 weeks.

Step-by-step explanation:

In this question we have a random variable that is equal to the sum of two normal-distributed random variables.

If we have two random variables X and Y, both normally distributed, the sum will have this properties:

$S=X+Y\\\\\ \mu_S=\mu_X+\mu_Y=30+60=90\\\\\sigma_S=\sqrt{\sigma_X^2+\sigma_Y^2}=\sqrt{10^2+20^2}=\sqrt{100+400}=\sqrt{500}=22.36$

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

$z=\frac{S-\mu_S}{\sigma_S} =\frac{120-90}{22.36}=\frac{30}{22.36}=1.34\\\\P(S>120)=P(z>1.34)=0.09012$

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

$E=\#weeks*P(S>120)=52*0.09012=4.68$

The nearest answer is C. 5 weeks.

6 0

3 years ago

Problem referred below <br> please help

zaharov [31]

Answer:

Step-by-step explanation:

Perimeter = 2l + 2w

57x2 = 114

234 - 114 = 120

120 / 2 = 60

6 0

3 years ago