Which polygon has an interior angle sum of 1260°?

Py+7=6y+q what is the answer for this question (linear equations with unknown coefficients)?

Temka [501]

Assuming your solving for y:
py+7=6y+q
-6y -7 -6y -7
(p-6)y = q-7
divide both sides by p-6
y=(q-7)/(p-6)

3 0

2 years ago

A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vert

andrezito [222]

Answer:

percentage of the total capacity is 75.6%

Step-by-step explanation:

Hello! To solve this problem we follow the following steps

1. draw the complete scheme of the problem (see attached image)

2. To solve this problem we must find the area of the circular sector using the following equation.(c in the second attached image)

$A=\frac{R^2}{2} (\alpha -sin\alpha )$

$\alpha =2arccos(\frac{d}{R})$

3. observing the attached images we replace the values in the equations and find the area of the circular sector, remember that you must transform the angle to radians

$\alpha =2arccos(\frac{5}{7})=88.83$

$A=\frac{R^2}{2} (\alpha -sin\alpha )\\A=\frac{7^2}{2} (88.83-sen88.83)*\frac{\pi rad}{180} =37.57ft^2$

4.we calculate the area of the total circle (At), then subtract the area of the circular sector (Ac) to find the area occupied by water (Aw)

$At=\frac{\pi }{4} (14ft)^2=153.93ft^2$

Aw=At-Ac=153.93-37.57=116.36ft^2

5.Finally, we calculate the percentage that represents the water in the tank by dividing the area of the water over the total area of the tank

$\frac{116.36}{153.93} *100=75.6$

percentage of the total capacity is 75.6%

3 0

2 years ago

Please help!! I don't know what to do :(

elena55 [62]

Yo sup??

This question can be solved by applying the properties of similar triangles

the triangle with sides 5x and 20 is similar to the triangle with sides 45 and 36

therefore we can say

5x/45=20/36

x=5 units

Hope this helps

8 0

2 years ago

What is the sum of the geometric series i =i

tatiyna

Answer: is B

Because:

4 0

3 years ago

A specific cars engine has a capacity of 5.1 Lof oil. How many quarts of oil does the engine have?

mr Goodwill [35]

ANSWER:

The engine have 5.39 qt approximately.

SOLUTION:

Given, a specific cars engine has a capacity of 5.1 L of oil.

We need to find how many quarts of oil does the engine have?

Number of quarts of oil is product of number of liters of oil and the number of quarts per liter.

We know that, one liter of liquid contains 1.056 quarts approximately.

Number of quarts of oil = number of liters of oil x number of quarts per liter.

Number of quarts of oil = 5.1 liters x 1.056 quarts.

Number of quarts of oil = 5.1 x 1.056

Number of quarts of oil = 5.389 qt.

Hence, the engine have 5.39 qt approximately

6 0

2 years ago