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Alika [10]
3 years ago
12

Your school buys 30 graphing calculators for 1822.50. Write and solve a proportion that gives the cost c of buying 120 calculato

rs.
solve it i will pick brainiest. ​
Mathematics
1 answer:
natali 33 [55]3 years ago
6 0

Answer:

7290

Step-by-step explanation:

Using proportion then

\frac{1822.5}{30} = \frac{c}{120} ( cross- multiply )

30c = 18700 ( divide both sides by 30 )

c = 7290

The cost of 120 calculators is 7290

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How do you Estimate the Product of Decimals and Whole
PtichkaEL [24]

Answer:

1) 8.5

2) 60

3) 69.3

4) 6.8

5) 3.6

6) 10.5

Step-by-step explanation:

Take out the decimal of the estimated factors and multiply. Count how far to left the decimal is in the factors. In the product, put the decimal as many to the left as it was in the factors. (ex. 6.93 x 42, 6.93 rounds to 6.9, 42 rounds to 40, 69 x 40 = 2,760, move the decimal over one for correct place value,            6.9 x 40 = 276.0 <em>or </em>276)

8 0
3 years ago
ASAP!!! ILL GIVE BRAINLIEST
Ostrovityanka [42]

Answer:

The correct options are 2 and 4.

Step-by-step explanation:

From the given box plot it is clear that

\text{Minimum value}=20

Q_1=25

Median=40

Q_3=50

\text{Maximum value}=110

We know that these number divides the data in four equal parts.

Q_1=25\%

Median=50%

Q_3=75\%

25% of the data values lies between 50 and 110. Therefore option 1 is incorrect.

Seventy-five percent of the data values lies between 20 and 50. Therefore option 2 is correct.

It is unlikely that there are any outliers. This statement is not true because the is a huge difference between third quartile and maximum value.

Therefore option 3 is incorrect.

The interquartile range is

IQR=Q_3-Q_1=50-25=25

Therefore option 4 is correct.

The range is

Range = Maximum-Minimum

Range=110-20=90

Therefore option 5 is incorrect.

4 0
3 years ago
The curved part of this figure is a semicircle.
ikadub [295]

Answer:

The actual answer is 10.5+7.25π units²

I just took the test

5 0
3 years ago
Find the slope of the line passing through the points (-7 ,-7) and (-3,6)
ycow [4]

Answer:

14/4 or 7/2

Step-by-step explanation:

6 - (-7)

---------

-3 - (-7)

When you subtract a - its really just adding

6 0
2 years ago
What is it ?………………….
eimsori [14]

Answer:

14

Step-by-step explanation:

its an formula which comes in algebraic expression

7 0
3 years ago
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