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3 years ago

13

If 12 men or 15 women can finish a piece of work in 66 days, how long will 24 men and 3 women take to finish the work? Pls helpp

p thank you :)

1 answer:

elixir [45]3 years ago

4 0

Answer:

30 days

Step-by-step explanation:

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The common ratio of a geometric series is \dfrac14 4 1 start fraction, 1, divided by, 4, end fraction and the sum of the first

myrzilka [38]

Answer:

The common ratio of a geometric series is \dfrac14

4

1

start fraction, 1, divided by, 4, end fraction and the sum of the first 4 terms is 170

The first term is 128

Step-by-step explanation:

The common ratio of the geometric series is given as:

$r = \frac{1}{4}$

The sum of the first 4 term is 170.

The sum of first n terms of a geometric sequence is given b;

$s_n=\frac{a_1(1-r^n)}{1-r}$

common ratio, n=4 and equate to 170.

$\frac{a_1(1-( \frac{1}{4} )^4)}{1- \frac{1}{4} } = 170$

$\frac{a_1(1- \frac{1}{256} )}{ \frac{3}{4} } = 170\\\\ \frac{255}{256} a_1 = \frac{3}{4} \times 170\\\\\frac{255}{256} a_1 = \frac{255}{2} \\\\\frac{1}{256} a_1 = \frac{1}{2} \\\\ a_1 = \frac{1}{2} \times 256\\\\a_1 = \frac{1}{2} \times 256 \\\\= 128$

8 0

3 years ago

3) Round (7/8) to the nearest 1/2.<br> 7<br> 8<br> a.) 0<br> Ob.) 1/2<br> Oc.) 1

a_sh-v [17]

Answer:

1

Step-by-step explanation:

it's really hard to understand the options that are given but 7/8 is only 1/8 away from 1. So I would choose 1. 0 is wrong. 1/2 is wrong. I dont know what the options 7 and 8 are doing there but I would go with 1

5 0

1 year ago

The cost for 3.5 pounds of shrimp is $14.63.

notka56 [123]

Answer:

$4.18 dollars per pound

Step-by-step explanation:

We can find the price in dollars per pound by dividing the cost by the number of pounds:

14.63/3.5 = 4.18

This means the price in dollars per pound is $4.18

3 0

3 years ago

Describe the end behavior of the following function:

Furkat [3]

Answer:

C. The graph of the function starts high and ends low

Step-by-step explanation:

For $f(x)=-x^5+x^2-x$ , as $x$ approaches negative infinity, $f(x)$ approaches infinity, and as $x$ approaches infinity, $f(x)$ approaches negative infinity.

Thus, we have:

$\lim_{x\rightarrow -\infty}f(x)=\infty,\\\lim_{x\rightarrow \infty}f(x)=-\infty$

This corresponds with answer choice C. The graph of the function starts high and ends low.

7 0

3 years ago

Evaluate the function, f(m) = 13 - 3m, when m is 4<br> f(4) =

djverab [1.8K]

Answer:

f(4)= 13-3(4)

4f= 13-12

4f=1

7 0

3 years ago

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