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2 years ago

13*100 i am tired rn

Mathematics

2 answers:

Assoli18 [71]2 years ago

8 0

Answer: 1300

Step-by-step explanation:

13*10 = 130*10=1300

Vitek1552 [10]2 years ago

3 0

Answer:

1300

Step-by-step explanation:

same bro I getting paid from doing people homework

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This net can be folded to make a square pyramid. what is the surface area of the pyramid

givi [52]

Answer:

$85in^2$

Step-by-step explanation:

to find the surface area we need to find the followng areas:

area of the square

area of a triangle and multiply it by 4 (because there are 4 triangles)

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

$a_{square}=l^2$

where $l$ is the length of the side: $l=5in$

thus the area of the square is:

$a_{square}=(5in)^2$

$a_{square}=25in^2$

Area of the triangles:

the are of 1 triangle is given by

$a_{triangle} =\frac{b*h}{2}$

where $b$ is the base of the triangle: $b=5in$ (the base of the triangle is the side of the square)

and $h$ is the height of the triangle: $h=6in$

thus, the area of 1 triangle is:

$a_{triangle} =\frac{(5in)*(6in)}{2}$

$a_{triangle} =\frac{30in^2}{2}$

$a_{triangle} =15in^2$

the area of the 4 triangles is (we multiply by 4):

$a_{4-triangles}=4(15in^2)$

$a_{4-triangles}=60in^2$

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

$Surface=25in^2+60in^2$

$Surface=85in^2$

8 0

1 year ago

Im in need of a big brain

stiv31 [10]

Answer:

x = 34

Step-by-step explanation:

If it is bisected, that means the angles are equal <ABD = < CBD

The triangles are equal by SAS

That means AD = CD

2x+30 = 3x-4

subtract 2x from each side

2x+30 -2x = 3x-4 -2x

30 = x-4

Add 4 to each side

3x+4 = x-4+4

34 =x

8 0

2 years ago

What is the answer X/7-3>8

mamaluj [8]

Answer:

x > 77

Step-by-step explanation:

According to order of operations rules, we must carry out division before addition or subtraction. In this case we wish to isolate x and are permitted to simplify the inequality by combining the "like terms" 3 and 8, as follows:

X/7-3>8

+3 +3

--------------

x/7 > 11

The easiest way in which to solve for x is to multiply both sides of this inequality by 7:

7(x/7) > 7(11), or

x > 77

All numbers greater than 77 are part of the solution set.

4 0

2 years ago

Ethan has a collection of 1,500 pennies. of these pennies, 15% are dated before 1980, 45% are dated from 1980 to 2000, and the r

Georgia [21]

Answer:

Hello!!

If Ethan has a collection of 1,500 pennies, and of these pennies, 15% are dated before 1980, 45% are dated from 1980 to 2000, and the rest are dated after 2000

There are 600 pennies in Ethan's collection dated after 2000

Step-by-step explanation:

$1500$ × $0.15=225$ pennies