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3 years ago

Can someone plz help me out with this I’ll give b... plz I beg u ( i do t know how to spell it but u know what I mean)

Mathematics

1 answer:

makvit [3.9K]3 years ago

3 0

Answer:

I think it might be 0.3 i'm not sure though

Step-by-step explanation:

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I need help with the questions in the files

Margaret [11]

Answer:

okay im sorry but i can only help with the first page so im going to use the first equation as an example. when it tells you what x equals in this case four you put it in place of the variable and put it all together and see if those two numbers egual the amount given. so here it written out:

x +11=15 x= 4

4+ 11 + 15.

in this case yes the given numbers equal the amount.

really hope this helped you!

Step-by-step explanation:

7 0

3 years ago

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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

2 years ago

Which of the following ordered pairs is a solution to the equation 2x+7y=8 <br> 2x+7y=8<br> ?

SIZIF [17.4K]

Plug in 0 for y and then solve for x, then plug in 0 for x in the starting equation to solve for y, the resulting two values are your x and y ordered pair.

6 0

3 years ago

Twice the difference of x and 5 is -33

Elden [556K]

2*(x-5) = -33, so x-5 = -16.5, so x = -11.5

This is assuming that "the difference between a and b" is a-b, which seems to be the accepted interpretation.

3 0

3 years ago

Andrew spent $45.45 on two shirts that were the same price and a pair of pants. If the pants were $16.99, how much was each shir

Sophie [7]

Answer:

22.72

Step-by-step explanation:

45.45 divided by 2 is 22.725

7 0

3 years ago

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