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trapecia [35]
3 years ago
13

Simplify the expression -7(-9 + 3t)

Mathematics
1 answer:
Tems11 [23]3 years ago
7 0
1. -7×3t−7×−9
2. -21t−7×−9
3. -21t−(−63)

Answer:
-21t + 63
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Choose the correct trig ratio you would use to solve for the missing piece of the right triangle.
arlik [135]

Answer:

take 19 degree as reference angle

using sine rule

sin 19 degree=x/74

0.32=x/74

0.32*74=x

23.68=x

Step-by-step explanation:

Hope this helps u !!

8 0
3 years ago
I need help with this<br>​
zzz [600]

Answer:

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Step-by-step explanation:

We can check using the Pythagorean theorem

a^2 + b^2 = c^2

5^2 + 12^2 = 13^2

25+ 144= 169

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5 0
3 years ago
Read 2 more answers
The ratio of two numbers is 8:7. The product of these numbers is 896. What is the smaller of these two
Darina [25.2K]

Answer:

  28

Step-by-step explanation:

You want the smaller of the two factors of 896 that have the ratio 8:7.

<h3>Setup</h3>

Let x represent the smaller of the two factors (the one we want to find). Then the larger factor is (8/7)x, and their product is ...

  x(8/7)x = 896

  (8/7)x² = 896

<h3>Solution</h3>

Multiplying by the inverse of the coefficient of x², we have ...

  x² = (7/8)(896) = 784

  x = √784 = 28 . . . . . . . . take square root

The smaller of the two numbers is 28.

__

<em>Additional comment</em>

The larger is (8/7)(28) = 32.

5 0
2 years ago
Which expression does the graphic represent? 8 positive tiles. 1 tile is crossed out. 7 minus 1 7 minus (negative 1) 8 minus 1 8
Tanzania [10]

Answer:

7-(-1)

Step-by-step explanation:

4 0
3 years ago
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 multiplying polynomials <br>find the product<br>(5n+6)(5n-5)
Viktor [21]
(5n+6)(5n-5) =5n\cdot 5n -5n\cdot 5+6\cdot 5n-6\cdot 5=\\ \\=25n^2-25n+30n-30 =25n^2+5n-30


3 0
3 years ago
Read 2 more answers
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