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Vadim26 [7]
3 years ago
6

How do you solve question 27 and 28

Mathematics
2 answers:
Brrunno [24]3 years ago
6 0

Answer:#1 C.30 #2 40


Step-by-step explanation:

3x+15=7x-5

3x+15+5=7x-5+5

3x+20=7x

3x-3x+20=7x-3x

20=4x

20/4=4/4x

5=x so if it is an equilateral all sides are equal so 3(5)+15=30 so the answer should be 30

So the triangle in #2 is an isoceles so two of the angles are equal so the equation is 2(2x-24)+3x+4=180

4x-48+3x+4=180

7x-44=180

7x=224

x=32

2(32)-24

64-24=40

Nataly_w [17]3 years ago
5 0
You solve it like the person up there said people are really smart these days lol
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Solve 28 less than or equal to 4n​
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Answer:

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Step-by-step explanation:

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3 years ago
Plz help !!!!!! whoever answers correct and first gets brainliest
vfiekz [6]

Answer:

B) 747.7 \ yd^2

Step-by-step explanation:

Given:

Height of cylinder (h) = 10 yd

Diameter of cylinder (d) = 14 yd

We need to find the surface area of the cylinder.

Solution:

First we will find the radius of the cylinder.

Radius is half of the diameter.

radius (r) = \frac{14}{2} = 7\ yd

Now we know that;

Surface area of cylinder is equal to 2 times π times radius(r) times sum of radius (r) and height (h).

Framing in equation form we get;

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Surface area of cylinder = 747.7 \ yd^2

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In the two expressions shown below, r is not equal to zero.
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