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lara [203]
3 years ago
8

Explain how you can compare the size of a product to the size of a factor when multiplying fractions without actually doing the

multiplication. Include a model.
Mathematics
1 answer:
Advocard [28]3 years ago
3 0
<span>Explain how you can compare the size of a product to the size of a factor when multiplying fractions without actually doing the multiplication. Include a model.
tbh idek

</span>
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A building casts a shadow that is 15 meters in length The distance from the top of the building to the top of the shadow is 25 m
Ber [7]

Answer:

20 meters

Step-by-step explanation:

The shadow of the building will look like a right triangle. In this problem, the hypotenuse of the triangle is 25 meters, and one of the sides is 15 meters. What we are trying to find is the length of the other side.

We can do this by using pythagoreans theorem.

15^2 + x^2 = 25^2\\225 + x^2 = 625\\x^2 = 400\\x =  20

So, the last side (or the height of the building) is 20 meters.

7 0
3 years ago
Please help me! :( Will mark as brainliest !!
aev [14]

\frac{(x + 1)(x - 1)}{(x + 3)(x - 3)}  \times  \frac{(x + 3)(x + 5)}{(x - 1)(x + 4)}  =  \frac{(x + 1)(x + 5)}{(x - 3)(x + 4)}
5 0
3 years ago
Can anyone help me with this question please ??
Anna007 [38]

Answer:

Try 7986

Step-by-step explanation:

(a+b) × height ÷ 2

(a+b are the parallel sides)

102+140=242 ×66= 15972 ÷2= 7986

7 0
3 years ago
-3(-5)-3y=-6 find the value of y
julia-pushkina [17]

-3 (-5) - 3y = -6

15 - 3y = -6

-3y = -6 + (-15)

-3y = -21

y = -21 / -3

y = 7

The value of y is 7.

6 0
4 years ago
Use a calculator to solve this problem:<br><br> 28 + 27 × 36
Annette [7]

For this case we have that according to the order of algebraic operations PEMDAS, the multiplications have priority over the addition and subtraction, then, we have the following expression:

28 + 27 * 36 =\\28 + 972 =\\1000

Thus, the value of the expression is 1000.

Answer:

28 + 27 * 36 = 1000

8 0
3 years ago
Read 2 more answers
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