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marysya [2.9K]
4 years ago
9

Heeeeeelllllpppppppppp

Mathematics
1 answer:
Vanyuwa [196]4 years ago
5 0
Okay so a triangle equals 180 degrees. 90 + 47 is 137. you need to get 180.
180 - 137 = 43. 
Angle z equals 43 degrees. 
Hope this helps!!
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Elodia [21]

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the correct answer is the second one

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Write the expression as a single fraction:<br> please help, giving brainliest :)
nignag [31]

Answer:

\frac{4a^{2} + 15b}{10ab}

Step-by-step explanation:

find the least common denominator for both fractions then combine them to find:

\frac{4a^{2} + 15b}{10ab}

4 0
3 years ago
Find the volume of a sphere with a great circle area of 201.06 square inches
Vikentia [17]
Assuming you meant a "circular cross-section" of 201.06 in².

so, we know if we cut the sphere like a cantaloupe, in half, the circular inner-part of the cantaloupe will have an area of 201.6 in².

keeping in mind that, the radius of that circular section, is the same radius of the sphere, what is it anyway?

\bf \textit{area of a circle}\\\\&#10;A=\pi r^2~~&#10;\begin{cases}&#10;r=radius\\&#10;-----\\&#10;A=201.06&#10;\end{cases}\implies 201.06=\pi r^2&#10;\\\\\\&#10;\cfrac{201.06}{\pi }=r^2\implies \sqrt{\cfrac{201.06}{\pi }}=r\\\\&#10;-------------------------------

\bf \textit{volume of a sphere}\\\\&#10;V=\cfrac{4\pi r^3}{3}\qquad \qquad \implies V=\cfrac{4\pi \left( \sqrt{\frac{201.06}{\pi }} \right)^3}{3}\implies V=\cfrac{4\pi \left( \frac{\sqrt{201.06^3}}{\sqrt{\pi ^3}} \right)}{3}&#10;\\\\\\&#10;V=\cfrac{4\pi \cdot \frac{\sqrt{201.06^3}}{\pi \sqrt{\pi }}}{3}\implies V=\cfrac{\frac{4\sqrt{201.06^3}}{\sqrt{\pi }}}{3}\implies V=\cfrac{4\sqrt{201.06^3}}{3\sqrt{\pi }}
6 0
3 years ago
Plan: “MI AUTO PARA TAXI”
Anastaziya [24]

Answer:

Plan II is more favorable because the total amount to pay is less and the time to pay is greater than Plan I.

Step-by-step explanation:

<u><em>The question in English is</em></u>

Plan: "MY AUTO FOR TAXI"

Mr. Alberto decides to buy a car in order to perform taxi services. The price of the vehicle is S/45 000, but only S/20 000 is available. He then decides to finance the missing money through a bank. If between the two loan plans offered, you must choose one:

Which of the two options would you recommend to Mr. Alberto?

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the total amount due  

P is the amount owed

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

Plan I

t=2\ years\\ P=\$45,000-\$20,000=\$25,000\\ r=0.05\\n=1  

substitute in the formula

A=25,000(1+\frac{0.05}{1})^{1*2}  

A=25,000(1.05)^{2}  

A=\$27,562.50  

Plan II

t=3\ years\\P=\$45,000-\$20,000=\$25,000\\ r=0.03\\n=1  

A=25,000(1+\frac{0.03}{1})^{1*3}  

A=25,000(1.03)^{3}  

A=\$27,318.18  

Compare

Plan I ----> t=2 years A=$27,562.50

Plan II----> t=3 years A=$27,318.18

therefore

Plan II is more favorable because the total amount to pay is less and the time to pay is greater than Plan I.

6 0
3 years ago
WILL MARK BRIANLEST!!!!!!! PLS HURRY!!!!!!!!
denis-greek [22]

Answer:

16 sq meters

Explanation

Surface area is the area of the figures combined. Find area of base and triangles then add.

2×2=4

2×3÷½=3

since there are 4 triangles you do 3×4

12+4= 16

6 0
2 years ago
Read 2 more answers
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