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Alex17521 [72]
2 years ago
15

What is the answer?​

Mathematics
1 answer:
olya-2409 [2.1K]2 years ago
6 0

Answer:

4

Step-by-step explanation:

a triangle has angles that add up to 180°

an equilateral triangle has equal angles

so each angle is 60° (because 180/3 is 60)

so 10x +20 = 60

10x = 40

x = 4

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Help me with this question for brainliest please
Pepsi [2]

Answer:

A

Step-by-step explanation:

We want to find the surface area, which will essentially just be the areas of all the figures given in the net.

We have two congruent triangles and 3 different rectangles.

<u>Triangles</u>:

The area of a triangle is denoted by: A = (1/2) * b * h, where b is the base and h is the height. The base here is 3 and the height is 4, so:

A = (1/2) * b * h

A = (1/2) * 3 * 4 = 6

Since there are two triangles, multiply 6 by 2: 6 * 2 = 12 cm squared

<u>Rectangles</u>:

The area of a rectangle is denoted by: A = b * h, where b is the base and h is the height.

The base of the leftmost rectangle is 4 and the height is 7, so:

A = b * h

A = 4 * 7 = 28

The base of the middle rectangle is 3 and the height is 7, so:

A = b * h

A = 3 * 7 = 21

The base of the rightmost rectangle is 5 and the height is 7, so:

A = b * h

A = 5 * 7 = 35

Add these together:

12 + 28 + 21 + 35 = 96 cm squared

The answer is thus A.

8 0
2 years ago
A 25-foot streetlight casts a showdown 20feet long.If Melanie is standing at the end of the shadow casted by a 60. -foot tall bu
natka813 [3]
Melanie is 48 feet away from the building.
Heres my working

20% of 25=20 so 20% of 60=48.
Hope this helped ☺️
7 0
3 years ago
What is the perimeter and the area of the figure?
galina1969 [7]

Answer:

kgkfkfkfgkgkgk

Step-by-step explanation:

fnxkxkcfkfkfk

4 0
2 years ago
Pls help me,this is Canadian MO 1998 question,i'm very confuse with this​
dybincka [34]

The solution to the equation is x = 1.62

<h3>How to solve the equation?</h3>

The equation is given as:

x =\sqrt{x\ -\ \frac{1}{x}}+\sqrt{1-\ \frac{1}{x}}

Next, we split the equations as follows:

y = x

y =\sqrt{x\ -\ \frac{1}{x}}+\sqrt{1-\ \frac{1}{x}}

Next, we graph the equations (see attachment)

From the attached graph, the equations intersect at

(x, y)= (1.62, 1.62)

Remove the y value

x = 1.62

Hence, the solution to the equation is x = 1.62

Read more about equations at

brainly.com/question/2972832

#SPJ1

5 0
1 year ago
Read 2 more answers
Question 5 Multiple Choice Worth 1 points)
ELEN [110]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
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