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3 years ago

I really don't know how to do this-

Mathematics

2 answers:

shepuryov [24]3 years ago

6 0

The sum of the interior angles of any quadrilateral is 360°.

So,

90° + 90° + 52° + x = 360°

=> 232° + x = 360°

=> x = 360° - 232°

=> x = 128°

Elodia [21]3 years ago

6 0

Answer:

x = 128

Step-by-step explanation:

All angles on a trapezoid must add up to 360 degrees. So we have 3 of our 4 angles so we can solve this as an equation

90 + 90 + 52 + x = 360

232 + x = 360

x = 128

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a cone with a radius of 3” has a total area of 24pie square inches. Find the volume of the cone. 12pie, 24 pie or 15 pie

Ratling [72]

Answer:

$12\pi (inches)^{2}$

Step-by-step explanation:

Given:

radius of cone = 3 inch

Total area of cone = $24\pi (inch)^{2}$

Find the volume of the cone?

We know the area of cone = $\pi r(r+s)$ -------(1)

Where r = radius

Ans s = side of the cone

Put the area value in equation 1

$24\pi=\pi r(r+s)$ -------(1)

$\frac{24\pi }{\pi r} =r+s$

$\frac{24}{ r}-r =s$

Put r value in above equation.

$s =\frac{24}{ 3}-3$

$s=8-3$

$s=5$

The side s = 5 inches

We know the side of the cone formula

$s^{2}=r^{2}+ h^{2}$

$h^{2}=s^{2}- r^{2}$

Put r and s value in above equation.

$h^{2}=5^{2}- 3^{2}$

$r^{2} = 25-9$

$r^{2} = 16$

$r = 4$

The volume of cone is

$V = \frac{1}{3} \pi r^{2} h$

Put r and h value in above equation.

$V = \frac{1}{3} \pi (3)^{2}\times 4$

$V = 12\pi (inches)^{2}$

The Volume of the cone is $12\pi (inches)^{2}$

7 0

3 years ago

Here is a system of linear equations: y= x+4 y= -3x-8

ipn [44]

Answer:

A) (-3,1)

Step-by-step explanation:

<u>Given system of linear equations: </u>

y= x+4
y= -3x-8

---

x + 4 = -3x - 8
x + 3x = - 8 - 4
4x = -12
x = -3

Then

y =-3 + 4 = 1

Solution is (-3, 1)

Correct option is A

5 0

3 years ago

Myra takes 2hours to plant 50 flower bulbs. Francis takes 3 hours to plant 45 flower bulbs. Working together, how long should it

crimeas [40]

Answer:37 and half hrs

Step-by-step explanation:

This is what I get

Myra: 50/2= 25 bulbs/hr.

Francis: 45/3= 15 bulbs/ hr

25+15= 40/hr. Together per hr

Need to find 150 bulbs how many hrs

40/1=150/t

40t=150

T= 150/4

T= 37.5

37hrs and 1/2

4 0

3 years ago

Simplify the two surds then simplify the resulting expression:<br> 2√50 + 3√32

-BARSIC- [3]

Answer: 31.11269837 round your answer if needed to

Step-by-step explanation:

3 0

3 years ago

How many times 700 great then 70

Mariulka [41]

70 X 10 =700

Therefore, it is 10 times greater than 70.

5 0

3 years ago

Read 2 more answers