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olga55 [171]
3 years ago
13

Please help!!! Thank you!!!

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
7 0

Answer:

See below

Step-by-step explanation:

<u>Statement                                      | Reason                                             </u>

1. m∠A + m∠B + m∠C = 180°         | 1.  Angles in a triangle sum to 180°

2. 28° + x - 4° + 2x = 180°              | 2. Substitution

3. x=(180° - 24°)/3= 156°/3°= 52°   | 3. Algebra

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At track practice peirce runs for 1 hour if it takes him 1/6 hour to run a mile how many miles does peirce run at practice
Alex787 [66]
He runs 6 miles... 1/6 hour for 1 mile equals 1 hours for 6 miles

Set proportions
6 0
3 years ago
Read 2 more answers
Help!!!!!!!!!!!!!!!!!
azamat

Answer:

1. D 2. B 3. C

Step-by-step explanation:

WARNING: I am not 100% sure about 2.

1. If you simplify the first part of the equation for letter D, you'll realise it is the same equation.

2. It is either B or D. I believe it is B because you would not have to multiply 4 again.

3. The square root of 121 is eleven, the square root of x^2 is x. x=11.

4 0
4 years ago
The sum of two numbers is 35. The greater
Shtirlitz [24]

Answer:

15, I think...

Step-by-step explanation:

7 0
3 years ago
The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the
GuDViN [60]
Given:
r = radius = 4
h = height = 12
dr = error in radius = 0.2

What we want to find
dV = error in volume

Use the derivative to find the differential dV
V = pi*r^2*h
dV/dr = d/dr[ pi*r^2*h ]
dV/dr = 2pi*r*h
dV = 2pi*r*h*dr
dV = 2pi*4*12*0.2
dV = 19.2pi

So if the error in measuring the radius is +-0.2 inches, then the error in the cylinder volume is +-19.2pi cubic inches (we either measure the volume to be 19.2pi cubic inches too big, or 19.2pi cubic inches too small)

----------------------------------------------------------------------------------

Final Answer: Plus or minus 19.2pi cubic inches

Note: your teacher may want you to drop the "plus or minus" part
5 0
3 years ago
James Harmon pays $850.80 per year for his life insurance. If Mr. Harmon were to pay the premiums monthly, the payments would be
Deffense [45]

Answer:

8.0%

Step-by-step explanation:

We have been given that James Harmon pays $850.80 per year for his life insurance. If Mr. Harmon were to pay the premiums monthly, the payments would be $76.57.

First of all, we will find the amount paid for the year using the monthly rate by multiplying $76.57 by 12 (1 year = 12 months).

\text{Amount paid for the year using the monthly rate}=\$76.57\times 12

\text{Amount paid for the year using the monthly rate}=\$918.84

Now, we will use percent change formula.

\text{Percent change}=\frac{\text{Final value}-\text{Initial value}}{\text{Initial value}}\times 100

\text{Percent change}=\frac{\$918.84-\$850.80}{\$850.80}\times 100

\text{Percent change}=\frac{\$68.04}{\$850.80}\times 100

\text{Percent change}=0.0799717912552891\times 100

\text{Percent change}=7.99717912552891\%

\text{Percent change}\approx 8.0\%

Therefore, Mr. Harmon is paying 8.0% more for the year using the monthly rate.

3 0
3 years ago
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