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3 years ago

Brainliest if correct

Mathematics

1 answer:

Natalka [10]3 years ago

3 0

Answer:

D. 1/16

Step-by-step explanation:

hope this helps! :D

brainliest much appreciated!! <3

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Lily has $2. 75 in her pocket, consisting of dimes and quarters. If there are 17 coins in all, how many of each does she have?.

Nikitich [7]

Answer:

Lily has 7 Quarters and 10 Dimes

Step-by-step explanation:

Let's use pennies instead of $.

Let D and Q stand for the numbers of Dimes and Quarters, respectively.

We are told that there are 17 coins total:

D + Q = 17

We also learn that they amount to 275 (pennies). We can write that as:

10D + 25Q = 275 [Each D is worth 10 pennies, etc.]

We have two equations and two unknowns. We can rearrange one equation to find the value of either of the unknowns, and then use that it the second equation.

I'll rearrange the first:

D + Q = 17

D = 17 - Q

Now use this value of D in the second equation:

10D + 25Q = 275

10(17-Q) + 25Q = 275

170 - 10Q + 25 Q = 275

15Q = 105

Q = 7 : 7 Quarters.

Since D + Q = 17:

D + 7 = 17

D = 10 Dimes

==========================================

Let's check these results:

Q = 7 Quarters

D = 10 Dimes

1. Is this 17 coins in total? (7+10 = 17) YES

2. Does this add to $2.75? (10*10) + (7*25) = 275 cents?

(100 + 176) = 275 (cents) YES

============================

Lily has 7 Quarters and 10 Dimes

8 0

3 years ago

fresh raspberry contain 80% water.Dried raspberry contain only 20%.how many pounds do you get from 36lb fresh berries

Montano1993 [528]

80% water = 36 lbs fresh berries

1 % water = 36 ÷ 80 = 0.45 lb

20% water = 0.45 x 20 = 9 lbs

Answer: You will get 9 lbs of raspberry.

6 0

3 years ago

The week before the bill to repeal the Affordable Care Act came up for consideration in the Senate, one polling agency increased

Lady_Fox [76]

Answer:

Step-by-step explanation:

As sample size increase the variability of the estimate of the proportion would decreases ( reduces)

The formula of variance of the estimator of the proportion is as

$
Var(\hat p)=\frac{p*(1-p)}{n}
$

Since the denominator of the formula of the variance of sample proportion is n

so as n increase the variance of it decrease.

The center of the estimate of proportion would same

Because $E(\hat p)=p
$

which does not affect the value of n ( sample size).

4 0

3 years ago

Simplify the quotient (4.5 x 10^3)/(9 x 10^7 ). Write your answer in scientific notation. Show your work.

marishachu [46]

To answer the problem above, divide the numerical portion and the exponential portion of the given numbers. 4.5 divided by 9 is 0.5. Furthermore, 10^3 divided by 10^7 is 10^-4. The answer is

0.5 x 10^-4

This may still be written in a standard form,

5 x 10^-5

Thus, the answer is 5 x 10^-5.

5 0

4 years ago

Read 2 more answers

Cuál era la causa que lograba que el Imperio Romano mantuviera su unidad

andrew11 [14]

Answer:

Causas de la decadencia del Imperio Romano

Otros factores que contribuyeron a la decadencia de Roma incluyen: -Inestabilidad política debida al tamaño del imperio. -Los intereses propios de las dos mitades del imperio. -La invasión de las tribus bárbaras.

Step-by-step explanation:

6 0

3 years ago