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In-s [12.5K]
2 years ago
5

What would you multiply by to decrease a number by 22.5%

Mathematics
2 answers:
umka2103 [35]2 years ago
8 0

Answer:

Multiply the number by 77.5%      (100%-22.5%)

Step-by-step explanation:

Verdich [7]2 years ago
8 0

Answer:

Multiply the number by 77.5%      (100%-22.5%)

Step-by-step explanation:

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If mBGC = 16x - 4 and mCGD = 2x + 13, find the value of x so that BGD is a right angle​
Lelu [443]

Hi there! :)

Answer:

\huge\boxed{x = 4.5}

m∠BGC = 16x - 4

m∠CGD = 2x + 13

m∠BGC + m∠CGD sums up to 90°, therefore:

(16x - 4) + (2x + 13) = 90

Combine like terms and simplify:

16x + 2x - 4 + 13 = 90

18x - 4 + 13 = 90

18x + 9 = 90

18x = 81

18x/18 = 81/8

x = 4.5

5 0
2 years ago
Which statements can be used to prove that ABC and A’B’C are congruent?
Nadusha1986 [10]

Answer:

O A.

Step-by-step explanation:

<u>Option A</u> identifies two angles (sufficient for similarity) and one side, sufficient (with similarity) for congruence. The applicable congruence theorem is AAS.

<u>Option B</u> identifies two sides and the angle not between them. The two triangles will be congruent in that case only if the angle is opposite the longest side, which is <u>not true</u> in general.

<u>Option C</u> same deal as Option A.

<u>Option D</u> identifies three congruent angles, which will prove the triangles similar, but not necessarily congruent.

7 0
2 years ago
A scuba diver is 3.8 meters below the surface of the water. He is descending at a rate of 0.5 meters per minute.
Andreyy89
-3.8 - 0.5m <== ur expression

the variable (m) represents number of minutes
5 0
3 years ago
Read 2 more answers
Solve 28 + 7y =91<br><br>Y=.....​
Anna35 [415]

Answer:

y = 9

Step-by-step explanation:

28 + 7y = 91 \\ 7y = 91 - 28 \\ 7y = 63 \\  \frac{7y}{7}  =  \frac{63}{7}  \\ y = 9

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3 years ago
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In a room of 40 girls, 10 girls like music only while 5 likes both music and arts. If 4 girls like neither, how many
iVinArrow [24]

Answer:

21

Step-by-step explanation:

Hope this helped have an amazing day!

6 0
2 years ago
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