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Savatey [412]
3 years ago
13

You have a total of 35 coins, all nickels ($0.05) and quarters ($0.25). The total value is $5.75. Find the number of nickels, n,

and quarters, q. Show work for full credit.
Mathematics
1 answer:
ki77a [65]3 years ago
8 0

20 quarters and 15 nickels.

20 x 0.25 = 5

15 x 0.05 = 0.75

5 + 0.75 = $5.75

Hope this helps.

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The last one
2j^2/3k^4
6 0
2 years ago
The price of an item has been reduced by 70% the original price was $58 what’s the price of the item now ¿
Mamont248 [21]

Answer:$17.40  


Step-by-step explanation:

This is a very simple question. First since 70% is the amount of money removed, we do 100-70=30

30% is the price that remains. Change that into a fraction 30/100 and then multiply the original cost

30/100*58=17.4

The answer is $17.40  

6 0
3 years ago
The average summer temperature in Anchorage is 69°F. If the daily temperature is normally distributed with a standard deviation
mafiozo [28]

Answer:

81.85%

Step-by-step explanation:

Given :

The average summer temperature in Anchorage is 69°F.

The daily temperature is normally distributed with a standard deviation of 7°F .

To Find:What percentage of the time would the temperature be between 55°F and 76°F?

Solution:

Mean = \mu = 69

Standard deviation = \sigma = 7

Formula : z=\frac{x-\mu}{\sigma}

Now At x = 55

z=\frac{55-69}{7}

z=-2

At x = 76

z=\frac{76-69}{7}

z=1

Now to find P(55<z<76)

P(2<z<-1)=P(z<2)-P(z>-1)

Using z table :

P(2<z<-1)=P(z<2)-P(z>-1)=0.9772-0.1587=0.8185

Now percentage of the time would the temperature be between 55°F and 76°F = 0.8185 \times 100 = 81.85\%

Hence If the daily temperature is normally distributed with a standard deviation of 7°F, 81.85% of the time would the temperature be between 55°F and 76°F.

7 0
3 years ago
Suppose that 16-ounce bags of chocolate chip cookies are produced with weights that follow a Normal distribution with mean weigh
tatyana61 [14]
I think the answer is C but I’m not sure
6 0
3 years ago
The expression below represents the vertical height above the ground, in meters, of a roller coaster when it is x meters away fr
luda_lava [24]

Answer:

D.) the initial height of the roller coaster

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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