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Elis [28]
3 years ago
15

Given the triangle below, what is m angle B, rounded to the nearest tenth?

Mathematics
1 answer:
Semenov [28]3 years ago
6 0
You didn’t include any material for reference
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The period is.......
Leni [432]
<h3>Answer: 2.244 seconds</h3>

Explanation:

The x coordinate of the left peak point is x = 1.870, and its neighboring peak point has an x coordinate of x = 4.114

The difference is 4.114 - 1.870 = 2.244

The period is 2.244 seconds, which is the time it takes to go from one peak to another adjacent. This is the same as going from one valley point to a neighboring valley point.

7 0
3 years ago
1.Consider the system of equations. x-5y=2
JulijaS [17]
1.Consider the system of equations. x-5y=2
3x-10y=11

(a) Jamar rewrote the first equation as –2x + 10y = –4. What justification did he have for doing this?

(b)Jamar combined the equation in Part (a) with the second equation in the system to get x = 7. Explain Jamar’s reasoning.

(c) What is the solution of the system? (d) How do you know, without graphing, that the graph of 4x – 15y = 13 passes through the point whose coordinates are the solution of the system?

8 0
2 years ago
The following line segments are graphed.
bogdanovich [222]

9514 1404 393

Answer:

  (a)  The figure is a quadrilateral.

Step-by-step explanation:

The four segments are not listed in order around the figure, but they do form a closed loop. The figure is a quadrilateral.

4 0
2 years ago
What is the unit rate
Andrew [12]

Answer:15 1/2 miles per gallon


Step-by-step explanation:

Since you want to find the unit rate you have to find the miles per gas.

You divide and get 15 1/2miles per gallon

7 0
3 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
2 years ago
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