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puteri [66]
3 years ago
7

Factorise completely 28x2y2-21x2y3

Mathematics
1 answer:
maks197457 [2]3 years ago
4 0

Answer: 7x4y5

Step-by-step explanation:

28x 2y 2 -21x 2y 3

add like terms

28x and -21x

2y and 2y

2 and 3

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Which expression is equivalent to 3t - 5 + 8t + 3 ?
Serggg [28]

Answer:

11t -2

Step-by-step explanation:

3t - 5 + 8t + 3

Combine like terms

3t +8t- 5  + 3

11t -2

5 0
3 years ago
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Katherine wants to use a sheet of fiberboard 18 inches long to create a skateboard ramp with a 17
MaRussiya [10]

The rise from the ground by the skateboard is 5.5 inches

<h3>How to determine the height above the ground?</h3>

The length of the skateboard is given as:

Length (l) = 18 inches

The angle of elevation (x) is

x = 17∘

Represent the height with h.

The value of h is calculated using the following tangent ratio:

tan(x) = h/l

Make h the subject

h = l * tan(x)

Substitute known values

h = 18 * tan(17)

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h = 5.5

Hence, the rise from the ground by the skateboard is 5.5 inches

Read more about elevation at:

brainly.com/question/19594654

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5 0
2 years ago
How to find the vau;e of Y
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8 0
3 years ago
18.The total fencing around a square field is 80 yards. The field has an area of how many square yards?
Bumek [7]
Hi there! The answer is 400 square yards.

When the total fencing around a square field is 80 yards, that means that the fencing on one side of the square field is 80 / 4 = 20 yards (Since a square field has 4 sides which are equally as long as every other side).

When the side of the field is 20 yards, the area (which is width * length) equals 20 yards * 20 yards = 400 square yards.
8 0
3 years ago
This is for today someone help me?!!!!!
PolarNik [594]
I think that it’s 17 not a good
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3 years ago
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