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Nastasia [14]
3 years ago
9

Please awnser wuestion in image please

Mathematics
2 answers:
sineoko [7]3 years ago
5 0

Answer:

D

Step-by-step explanation:

1/25 is the same thing as 5^{-2}. So, u wantn to find whcih answer choice does not equal that. You can use the exponent multiplication rule, where x^a times x^b equals x^a+b.

for example, answer choice A would be 5^(3+-5) which is 5^-2.

the only choice that does not equal 5^-2 is D because it equals 5^2

Yuliya22 [10]3 years ago
4 0

Answer: D

Brainliest pls

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Solve one-third/5 = a/20 <br> a = 3/5<br> a = 3/4<br> a = 4/3<br> a = 5/3
WINSTONCH [101]

Answer:

4/3

Step-by-step explanation:

Step 1: Cross-multiply.

135=a20

(13)*(20)=a*(5)

203=5a

Step 2: Flip the equation.

5a=203

Step 3: Divide both sides by 5.

5a5=2035

a=4/3

hope I'm right

7 0
3 years ago
What is 2 7/10+4 1/10 in simplest form
WITCHER [35]

Answer:

6\frac{4}{5}

Step-by-step explanation:

2\frac{7}{10} + 4\frac{1}{10} = ( 2 + 4 ) + ( \frac{7}{10} + \frac{1}{10} ) = 6 \frac{7+1}{10} = 6 \frac{8}{10} = 6\frac{4}{5}

3 0
3 years ago
B-4-3b combining like terms​
Bogdan [553]

Answer: -2b-4

Ok, so I assume you meant b-4-3b. If not, then B-4-3b is the best you can get, since B and b are different in math.

Anyways, we can rearrange b-4-3b into b-3b-4. Calculating b-3b = -2b. That means -2b-4 is the answer.

Hope that helped,

-sirswagger21

3 0
3 years ago
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Mr. Edwards paid $8,000 for a rectangular lot 250 feet wide and 400 feet long. What was his cost per square
zavuch27 [327]
250×400×or+ what equals 8,000 i think
8 0
3 years ago
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Techechtium-99m has a half-life of 6 hours. If 1000mg is in use, in how many hours will 62.5mg remain?
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One half life 1000 mg to 1000/2 =500 mg
One half life 500 mg to 500/2 = 250 mg
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Etc .......
7 0
3 years ago
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