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Vitek1552 [10]
3 years ago
12

Need help can you please explain how I do this.

Mathematics
1 answer:
Musya8 [376]3 years ago
7 0
The formula for the area of a trapezoid is .5*h(b1+b2)
H is the height so 13 cm
B1 is one of the bases so I'll say 9
B2 is the other base so 4.4
So you so .5*13(9+4.4)
I'm happy to expand if you need it. The answer is 87.1
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Briana drew a rectangle with a width 5 inches shorter than its length. She measured the perimeter of the rectangle and found it
Zigmanuir [339]
P = 2(L + W)
P = 14
W = L - 5

14 = 2(L + L - 5)
14 = 2(2L - 5)
14 = 4L - 10
14 + 10 = 4L
24 = 4L
24/4 = L
6 = L.......the length is 6 inches

W = L - 5
W = 6 - 5
W = 1 <=== the width is 1 inch
7 0
3 years ago
A discount bookstore sells hardcover books for $12 and paperback books for $6. The number of hardcover books, x, sold one day wa
Thepotemich [5.8K]

Answer: the system of equations that represents this situation are

12x + 6y = 180

x = 2y

Step-by-step explanation:

Let x represent the number of hardcover books that were sold in a day.

Let y represent the number of paperback books that were sold in a day.

The discount bookstore sells hardcover books for $12 and paperback books for $6. The total sales that day were $180. It means that

12x + 6y = 180

The number of hardcover books sold that day was twice the number of paperback books. It means that

x = 2y

8 0
3 years ago
Which of the following equations have exactly one solution?
Sonja [21]

Answer:

B.

Step-by-step explanation:

Because if you subtract 19x and 18 from each side it wont be 0=0, in other equatins there is infinity solutions

7 0
3 years ago
96/8 useing distributive property
Illusion [34]

Answer:

12

Step-by-step explanation:

96/8 = 12

6 0
3 years ago
Type the correct answer in each box. Use numerals instead of words.
sweet [91]
Answer: -(x + 3)^2 = 3

Explanation:

-x^2 - 6x + 6 = 0
-x^2 - 6x = -6
-x^2 - 6x + 9 = -6 + 9
-(x + 3)^2 = 3
6 0
3 years ago
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