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k0ka [10]
3 years ago
5

A science museum has 2,400 gemstone displayed equally in 3cases how many gemstone

Mathematics
1 answer:
victus00 [196]3 years ago
6 0
800 gemstone in each case

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A police officer records the speeds of vehicles on a road. What percent of the vehicles were traveling between 41 and 45 miles p
olya-2409 [2.1K]

Answer:

28%

Step-by-step explanation:

Here is the missing table from the question:

Speed (mph) Number of Vehicles

36-40                2

41-45               14

46-50               18

51-55               12

56-60                4

Given: A police officer records the speeds of vehicles on a road.

Now, finding the percent of vehicles traveling between 41 and 45 miles per hour.

First, calculating the total number of vehicles.

Total vehicles= 2+14+18+12+4= 50

Vehicles travelling at speed of 41-45 mph= 14

Formula;  percent of vehicles traveling between 41 and 45 mph= \frac{vehicles\ travelling\ 41-45\ mph}{Total\ number\ of\ vehicles} \times 100

⇒ Percent of vehicles traveling between 41-45 mph= \frac{14}{50} \times 100= 14\times 2

∴ Percent of vehicles traveling between 41-45 mph is 28%

4 0
3 years ago
Simplify (2x2 - 5) - (3x2 + 4).
statuscvo [17]

Answer:

-x² - 9 is your simplified form

Step-by-step explanation:

Combine terms with the same amount of variables.

(2x² - 5) - (3x² + 4)

First, distribute the negative sign to all terms within the second parenthesis

(2x² - 5) - 3x² - 4

Combine like terms

2x² - 3x² = -x²

-5 - 4 = -9

-x² - 9 is your simplified form

~

6 0
3 years ago
Read 2 more answers
if doris paid $5.28 for 4.4 pounds of swiss cheese what was the the price of 1 pound of swiss cheese?
victus00 [196]

5.28/ 4.4 = 1.2 per pound

8 0
4 years ago
Read 2 more answers
Which is the function represented by the table?
Paha777 [63]
The function represented by the table is linear function
and pass with (0,0)
so it is in the form
             f(x) = m x
where m is the slope

m = [ f(x₂) - f (x₁) ] / [ x₂ -x₁]
    (4-0)/(1-0) =4
so
   f(x) = 4 x
4 0
3 years ago
The cost of 7 scarves is $78.75. What is the unit price?
Veseljchak [2.6K]
One scarf would cost $11.25. take the total price and divide by the number of scarves. :)
3 0
3 years ago
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