All categories

2 years ago

What's

Mathematics

1 answer:

Iteru [2.4K]2 years ago

8 0

Answer:

374/105.

Step-by-step explanation:

1/3 of 8 * 2/7

= 1/3 * 8 * 2/7

= 8/3 * 2/7

= 16/21.

2/5 of 7

= 2/5 * 7

= 14/5.

Adding 16/21 + 14/5

= 80 / 105 + (14*21) / 105

= 80/105 + 294/105

= 374/105.

You might be interested in

I need help with this math question

kirill115 [55]

Answer:

Step-by-step explanation:

6 0

2 years ago

Which is a perfect square? 6^1 6^2 6^3 6^5 Need the answer asap

oksian1 [2.3K]

Answer:

The answer is 6²

Step-by-step explanation:

Since 6² = 36

√36 = 6 making 6² a perfect square.

Hope this helps you

4 0

3 years ago

Read 2 more answers

3a) The slope of the line parallel to y = -2x + 3 is ___ *

anygoal [31]

Answer:

m = -2

Step-by-step explanation:

because y = -2x and y = -2x + 3 are parallel

4 0

3 years ago

What is 45.00 divided by 3%

Elena-2011 [213]

Answer:

The answer is 1500.

Step-by-step explanation:

To solve this problem you should change 3% to a decimal. We do this by moving the decimal 2 places to the left. The decimal form of 3% is 0.03. We then have to divide 45/0.03 in order to get our answer.

I hope this helped :)

3 0

2 years ago

Read 2 more answers

Ian is a phycologist interested in determining the proportion of algae samples from a local rivulet that belonged to a particula

pickupchik [31]

Answer: 16590

Step-by-step explanation:

The formula we use to find the sample size is given by :-

, where p = prior estimate of population proportion.

$z^*$ = Critical z-value (Two- tailed)

E= Margin of error .

Let p be the population proportion of cyanobacteria.

Given : E = 0.01

Critical value for 99% confidence interval : $z^*=2.576$

If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.

Now, the required sample size = $n=0.5(1-0.5)(\frac{2.576}{0.01})^2$

$n=0.25(257.6)^2=0.25(66357.76)=16589.44\approx16590$

Required sample size = 16590

5 0

2 years ago