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jasenka [17]
3 years ago
8

I don’t understand can you please explain how you got this answer my answer keep being low than these

Mathematics
1 answer:
disa [49]3 years ago
3 0

Answer:

189

Step-by-step explanation:

The pyramid has four triangular faces and a square base.

The area of a triangle is half its base times its height.  The base of each triangle is 7, and the height of each triangle is 10.  So the area of each triangle is A = ½ (7) (10) = 35.

The area of a square is the side length squared.  The side of the square is 7.  So the area of the square is A = (7)² = 49.

The total surface area is:

A = 4(35) + 49

A = 189

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4(2x + 3) in the simplest form
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Answer: 8x+12

Step-by-step explanation:

We can use the Distributive Property to get it in it's simplest form

4(2x+3)

(4)(2x)+(4)(3)

8x+12

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3 years ago
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Simplify the following expression. show your work.<br> (-y + 5.3) + (7.2y - 9)
Kitty [74]

Answer:

6.2y - 3.7

Step-by-step explanation:

−y+5.3+7.2y−9

Subtract 9 from 5.3 to get −3.7.

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2 years ago
Determinewhether the two lines areparallel, perpendicular, neither.X-3=6Y = 3x +4
Brums [2.3K]

we have the lines

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8 0
1 year ago
How many days are there in 4 years,that is,3 years and 1 leap year??
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3 years ago
A supermarket is selling two types of​ candies, orange slices and strawberry leaves. The orange slices cost $1.27 per pound and
garik1379 [7]

The question here has wrong numbers. Here is the correct question:

A supermarket is selling 2 types of candies, orange slices and strawberry leaves. The orange slices cost $1.27 per pound and the strawberry leaves cost $1.77 per pound. How many pounds of each should be mixed to get a 13-pound mixture that sells for $19.01?

Answer:

8 pounds of orange slices and 5 pounds of strawberry leaves

Step-by-step explanation:

This question is related to simple algebra

Let x represent orange slices weight

Let y represent strawberry leaves weight

The sum of the weights of x and y will be 13 pounds

So first equation will be x + y = 13

The total cost will be $19.01

So the second equation will be

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Using first equation  

x + y = 13

x = 13 – y

Substituting this in the second equation

1.27 (13 - y) + 1.77y = 19.01

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y = 5

 

Using this value of y to find x

x = 13 – y

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3 0
2 years ago
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