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juin [17]
3 years ago
13

Explain how to solve this problem. -5 + 18 + (-12) + (-1)

Mathematics
1 answer:
Nana76 [90]3 years ago
6 0

Answer:

0

Step-by-step explanation:

-5 + 18 + (-12) + (-1)

-5+18-12-1

13-13

0

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2+2-2-3-87+20090 then split in half
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20002 because all of it added together and then divided by two gives you 20002.

6 0
3 years ago
the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect
Leni [432]

Answer:

Step-by-step explanation:

let : x the length and y the width    .... ( x  > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

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x = 35/2

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4 years ago
the farm covers an area of 13square miles. The farm is divided into 4 equal sections, as shown in this diagram. What is the area
lidiya [134]

Answer:

p[

Step-by-step explanation:

p[

8 0
3 years ago
Read 2 more answers
What does cross-sectional area mean in math term?
Bingel [31]
The only math term I can think of is geometry and it means when a solid is cut through parallel to the base.
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3 0
3 years ago
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Juana is 4 feet 8 inches tall. She won 1st place in a cross country race. To receive her medal she stood on a platform that was
ioda

Answer:

The distance from the top of her head to the floor is 6 feet 2 inches.

Step-by-step explanation:

In his case Juana's height is given to us with two kinds of units, feet and inches, in order to make our solution easyer we will transform her height to only inches. In 1 feet we have 12 inches, so we need to take the part of her height that is given in feet and multiply it by 12. We have:

height = 4*12 + 8 = 56 inches

Since she is in a platform that is 18 inches tall the distance from the top of her head to the floor is her height plus the height of the platform. We have:

distance = height + platform = 56 + 18 = 74 inches

We can now transform back to a mixed unit, we do that by dividing the distance by 12 that will be the "feet" part and the res of the division will be the "inches" part. We have:

distance = 74/12 = 6 feet 2 inches

The distance from the top of her head to the floor is 6 feet 2 inches.

6 0
3 years ago
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