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Papessa [141]
2 years ago
10

(2/5) to the power of 2

Mathematics
2 answers:
Artemon [7]2 years ago
3 0

Answer:

4/25 or 0.16

Step-by-step explanation:

2/5 ^ 2 = 4/25

2/5 x 2/5 = 4/25 or 0.16

Inessa [10]2 years ago
3 0

Answer:4/25 or 0.16

Step-by-step explanation:

⅖²=

2/5x2/5= 4/25

multiply

2x2=4

5x5=25

You might be interested in
An experienced carpenter can frame a house twice as fast as an apprentice. Working together, it takes the carpenters 2 days. How
AleksAgata [21]

Answer:

<em>6 days</em>

<em></em>

Step-by-step explanation:

Let the time taken by Carpenter working alone = C days

Then time taken by apprentice alone = Twice as that of taken by Carpenter = 2C days

Time taken working together = 2 days

Work done in one day working together = \frac{1}{2}

Work done in one day by Carpenter working alone = \frac{1}{C}

Work done in one day by apprentice working alone = \frac{1}{2C}

Work done in one day by Carpenter working alone + Work done in one day by Carpenter working alone =  \frac{1}{C}+\frac{1}{2C} = Work done in one day working together = \frac{1}{2}

\dfrac{1}{C}+\dfrac{1}{2C}=\dfrac{1}{2}\\\Rightarrow \dfrac{2+1}{2C}=\dfrac{1}{2}\\\Rightarrow C = 3\ days

Time taken by Carpenter alone to complete the work = 3 days

Time taken by Apprentice alone to complete the work = 3 \times 2= <em>6 days</em>

4 0
3 years ago
4. Solve the inequality.<br>​
olga2289 [7]

Answer:

D

Step-by-step explanation:

Given

- 12 ≤ 2x - 4 < 10 ( add 4 to all 3 intervals )

- 8 ≤ 2x < 14 ( divide all 3 intervals by 2 )

- 4 ≤ x < 7

7 0
3 years ago
.
4vir4ik [10]

Answer:

37.5%

Step-by-step explanation:

You need to convert this fraction into a decimal to start. After you do this you need to turn the decimal into its percentage form. Soo 0.375 = 3/8 = 37.5%

8 0
3 years ago
Read 2 more answers
Ian wants to paint a wall measuring 3 metres by 7 metres.
anygoal [31]

Answer: 5.2

Step-by-step explanation:

3*7 = 21

21/5 = 4.2

4 0
3 years ago
Given that X ~ N(120, 35). We survey samples of 25 and are interested in the distribution of X-bar. Find the z-score associated
lubasha [3.4K]

Answer:

Option c -2.8571

Step-by-step explanation:

z-score are calculated as

z=\frac{xbar-mean}{\frac{S.D}{\sqrt{n} } }.

We are given that mean=120 and standard deviation=S.D=35 as X~N(120,35).

Sample size=n=25.

We have to find z-score for x-bar=100. So,

z-score=[100-120]/[35/√25]

z-score=[-20]/[35/5]

z-score=-20/7

z-score=-2.8571.

Thus,  the z-score associated with x-bar = 100 is -2.8571.

8 0
4 years ago
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