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Evgesh-ka [11]
2 years ago
11

PLS SHOW ME HOW U GET THE ANSWER AND WILL GIVE BRAINLYEST

Mathematics
1 answer:
storchak [24]2 years ago
4 0

Answer:

38 degrees

Step-by-step explanation:

all triangles length added up are 180 degrees.

add 52 and 90 to get 142. Subtract to get 38 degrees.

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The area of the circle is square
Igoryamba

Answer:

16л, 8л

Step-by-step explanation:

r=4

area=4*4л

=16л

circumference= 2л*4

=8л

4 0
2 years ago
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Find the value of x: 3(6x - 4x) = -30<br> (Provide Step-By-Step)
Olegator [25]

Answer:

x = -5

Step-by-step explanation:

Multiply 3 by (6x - 4x) = 18x - 12x

18x - 12x = -30

6x = -30

x = -30 /6

x = -5

5 0
3 years ago
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You buy books for 64 cents each, you plan to sell them for 75 cents each. You're left with 100 unsold books, and you lost $12. H
PSYCHO15rus [73]

The number of books sold is 473.

<u>Step-by-step explanation:</u>

  • The original cost of each book = $0.64
  • The selling price of each book = $0.75

The difference between the original price and selling price of the book gives the profit per book.

The profit of one book = Selling price - Original price

Let,

  • The total number of books be 'x'.
  • The number of books sold be 'y'.
  • The unsold books is 100.
  • The total profit is -12 because it was gone to a loss of $12.

Therefore, the equation is formed as

total Profit = 0.75y - 0.64x

⇒ 0.75y - 0.64x = -12 --------(1)

Total books = sold books + unsold books

x = y + 100

⇒ x-y = 100  -------(2)

Substitute x= 100+y in the eq(1),

0.75y - 0.64(100+y) = -12

0.75y - 64 -0.64y = -12

0.11y = -12 +64

y = 52 / 0.11

y = 472.7

y ≅ 473

The number of book sold is 473 books.

The total number of books is (100+473) = 573 books.

8 0
3 years ago
Is b = 15 a solution to the equation 4b - 20 = 40?
irina [24]

Answer:

yes

Step-by-step explanation:

4 x 15 - 20 = 40

60 - 20 = 40

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Calculate the size of a cube​
Varvara68 [4.7K]

Answer:

<em>A</em><em> </em><em>cube</em><em> </em><em>size</em><em> </em><em>is</em><em> </em><em>150mm</em>

Step-by-step explanation:

I think it will be

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