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babunello [35]
3 years ago
6

7. There are 15 printers in one department. If 2/5 are color printers, how many can only print black and

Mathematics
2 answers:
scZoUnD [109]3 years ago
6 0

Answer:

9

Step-by-step explanation:

Multiply 2/5 by three, creating 6/15. subtract 15 by 6, 15-6=9

Lina20 [59]3 years ago
5 0
The correct answer is B. 9
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The diameter of each wheel of a bicycle is 28 inches. If you are traveling at a speed of 15 miles per hour on this? bicycle, thr
Rudik [331]

Answer:

180.07 rev / min

Step-by-step explanation:

Diameter (D) of each wheel =28 inches

Circumference (C) =  π x 28 = 28π inches

Conversions:

1 mile = 63,360 inches

1 hour = 60 min

Hence 15 miles / hour

= (15)(63,360) inches / hour

= (15)(63,360) / 60  inches / min

= 15,840 inches per min

Number of revolutions per min = Number of inches per min ÷ circumference in inches

=15,840 inches/min ÷ 28π inches

= 180.07 revolutions per min

7 0
3 years ago
What is TR(39)? <br> pls help this is going to be on my exam...
musickatia [10]

Answer:

780

Step-by-step explanation:

So when you're adding consecutive numbers like this. 1+2+3...+39. You add 39 and 1. This is 40. 2+38 is 40. This is a pattern. Now, we do 40 multiplied by 39 and this will give you the number 1620. After this you would have to divide this product by 2. The answer will soon be 780.

3 0
2 years ago
When Ryan counted some dimes and quarters he had 196 coins and a total of $39.40. How many coins of each kind does Ryan have?
Nonamiya [84]
Quarters = x
dimes = 196 - x

10(196 - x) + 25x = 3940
1960 - 10x +25x = 3940
1960 + 15x = 3940
15x = 1980
x = 132

169 - 132 = 64

Therefor there are 132 quarters and 64 dimes
6 0
3 years ago
What is equivalent to 4 2/3
Svet_ta [14]
8
46
is equivalent to 4
23
because 4 x 2 = 8 and 23 x 2 = 46
12
69
is equivalent to 4
23
because 4 x 3 = 12 and 23 x 3 = 69
16
92
is equivalent to 4
23
because 4 x 4 = 16 and 23 x 4 = 92
4 0
3 years ago
For the data set: 22, 40, 21, 18, 47, 22, 19, what is the mode?
SashulF [63]
Hello!

Mode : \fbox{it is the frequently occurIng value in the given set of observation}

Given observations are :-

22,40,21,18,47,22,19

Now , mode = \fbox{22}

The answer is 22 as it appears two times in the given set of observations.

Hope this is clear :)
Have a good day:)
7 0
2 years ago
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