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OleMash [197]
3 years ago
12

Every evening Jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she

had 38 coins, all of them dimes and quarters. When she added them up, she had a total of $6.95. how many coins did jenna have
Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0
D + q = 38......d = 38 - q
0.10d + 0.25q = 6.95

0.10(38 - q) + 0.25q = 6.95
3.80 - 0.10q + 0.25q = 6.95
-0.10q + 0.25q = 6.95 - 3.80
0.15q = 3.15
q = 3.15 / 0.15
q = 21 <== number of quarters

d + q = 38
d + 21 = 38
d = 38 - 21
d = 17 <== number of dimes



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pantera1 [17]
-6/7 = -x/84

84/7 = 12

12(-6) = -72

x = -72

So, -6/7 = -72/84 because -72/84 simplifies to -6/7

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The school soccer coach records the number of goals some players have scored so far this season. The dot plot of the number of g
yuradex [85]

Answer:

the means absolute deviation is 1.8

the striking deviation is 7

(it is because the data point on the far right of the graph)

Step-by-step explanation:

calculate the absolute deviation:

1.  calculate the mean (add all numbers and divide by 10) = 2.6

2.  find the absolute value of each

2.6 - 0 = 2.6

2.6 - 1 = 1.6 (you have 1's 4 times so each one will be 1.6)

2.6 - 3 = 0.4

2.6 - 4 = 1.4 (you have 4's 3 times)

2.6 - 7 = 4.4

3.  Then add all of those values together

2.6 + 1.6 + 1.6 + 1.6 +  1.6 + 0.4 + 1.4 + 1.4 + 1.4 + 7.4 = 18

4.  find the mean of the difference

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3 0
3 years ago
F/13 = 6.2 what is the value of f
nekit [7.7K]

Answer:

The value of f is 80.6.

Step-by-step explanation:

We are given the equation and asked to solve for f.

If we are given a fraction with a variable in the numerator, we can multiply both sides of the equation by the denominator to isolate it.

For example, if you look at this equation:

\displaystyle\frac{a}{26}=17.9

We can multiply both sides by 26 to get the a by itself so the equation can be solved.

\displaystyle26\times\frac{a}{26}=17.9\times26\\\\a = 465.4

Therefore, we can apply this same technique to the equation \frac{f}{13}=6.2.

\displaystyle\frac{f}{13}=6.2\\\\13\times\frac{f}{13}=6.2\times13\\\\f = 80.6\ \text{or} \ \frac{403}{5}

Therefore, the value of f is 80.6.

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Nataly_w [17]

Answer:

1.5

Step-by-step explanation:

this is because 24 divided by 16 equals 1.5


have a nice day!

7 0
3 years ago
Pls Helps LOTS OF POINTS!
Stells [14]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

To find the scale factor, all you have to do is <em>divide a side value of one figure by its congruent side value on another figure. </em>

Step-by-step explanation:

To start:

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              \____________________/

                                    1.5

<h3>So, the scale factor is 1.5</h3>

To double check, we will use another congruent side to find the scale factor:

12 ÷ 8 = scale factor

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<h3>So, the scale factor is most definitely 1.5</h3>

I hope this helps!

- sincerelynini

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