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2 years ago

Find the areas of the trapezoids.

Mathematics

1 answer:

Elza [17]2 years ago

6 0

Answer:

A = 3(½(1 + 4)) = 7.5 units²

Step-by-step explanation:

area of a trapezoid is the average of the bases times the height.

h = -1 - (-4) = 3

base1 TR = 0 - (-1) = 1

base2 PA = 2 - (-2)) = 4

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In a right triangle, the value of cos B = 3/5. What is the value of sin B?

ozzi

Answer:

4/5

Step-by-step explanation:

cos B = 3/5

cos Ф = adjacent/hypothesis

hypothesis ² = adjacent² + opposite²

5²= 3²+ o²

25 = 9+o²

25-9=o²

16 = o²

√16 = o = 4

Sin B = opposite/hypothesis = 4/5

7 0

3 years ago

2x-y=8 x+2y=4 for the system of equation above, what is the value of x+y?

inysia [295]

2x+10y I thinks that’s the answer mb

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3 years ago

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Solve (2x3-5x2+8)(x+3)

neonofarm [45]

Answer:

$(2 {x}^{3} - 5 {x}^{2} + 8)(x + 3) \\ = (2 {x}^{4} - 5 {x}^{3} + 8x + 6 {x}^{3} - 15 {x}^{2} + 24) \\ = 2 {x}^{4} + {x}^{3} - 15 {x}^{2} + 8x + 24$

8 0

2 years ago

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Write an expression that represents the edge length of jewelry box

Mandarinka [93]

Answer:

The cubed-root of v (/v)

Step-by-step explanation:

Like your work on the second question illustrated, the cubed root of v (which is 216) is your expression for the edge length of the box in inches.

Hope this helps!

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3 years ago

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The sum of two numbers is 32. Five times the smaller number minus twice the larger number is 195.What are the numbers ?

Harlamova29_29 [7]

Answer:

37 and -5

Step-by-step explanation:

Le the numbers be x and y

Then we have equations:

x + y = 32
5x - 2y = 195

As per the first equation:

y = 32- x

Substitute in the second equation

5x - 2(32 - x) = 195
5x + 2x - 64 = 195
7x = 195 + 64
7x = 259
x = 259/7
x = 37

Then finding the value of y

y = 23 - 37 = -5

8 0

3 years ago