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dusya [7]
3 years ago
6

Simplify 3(у- 1) +7 completely. А. Зу+6 В. Зу+ 4 С. 3y+10 D. Зу- 3

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
7 0
Use distributive property. 3xY, 3x -1, +7
so the answer is 3y-3+7. you combine like terms and get B. 3y+4
marysya [2.9K]3 years ago
4 0

Answer:

B. 3y + 4

Step-by-step explanation:

Step 1:

3 (y - 1) + 7

Step 2:

3y - 3 + 7

Answer:

3y + 4

Hope This Helps :)

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Factorise the following algebraic expressions completely a. y4 −81 . x2 +10x +24
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If ∠A and ∠B are supplementary and m∠A = 37°45', then m∠B = ______.
xenn [34]

Answer: 142°15'

Explanation:

Supplementary angles are angles that add up to make a straight angle (180^{\circ}).

Therefore, we must find the angle ∠B such that

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6 0
3 years ago
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What is the length of the side a ?<br><br> A=
vodka [1.7K]

Answer:

a = 5

Step-by-step explanation:

Notice that \triangle CDB is a right triangle where its hypotenuse is \overline{CB}. We can also see that a = CB. For this we must use the Pythagorean Theorem.

Recall:

The Pythagorean Theorem states that if you have a right triangle, the principal square root of the sum of the squares of each leg is the length the hypotenuse.

We can see that CD = 3 and DB = 4

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7 0
2 years ago
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