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valentinak56 [21]
2 years ago
8

I need help what’s 5.57 multipled by 4

Mathematics
2 answers:
andrew11 [14]2 years ago
8 0

Answer:

22.28

Step-by-step explanation:

Mrrafil [7]2 years ago
6 0
5.57 x 4 = 22.28





Explanation:
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There are two numbers which sum to 23. If one number is seven less than four times the other, find the numbers.
mart [117]

Answer:

Numbers are 6 and 17.

Step-by-step explanation:

Let the two numbers are 'a' and 'b'.

"Sum of these numbers = 23"

a + b = 23 --------(1)

"One number is 7 less than 4 times the other"

a = 4b - 7 ---------(2)

Substitute the value of 'a' in equation (1) from equation (2)

(4b - 7) + b = 23

5b - 7 = 23

5b = 23 + 7

5b = 30

b = 6

From equation (2),

a = 4b - 7

a = 4×6 - 7

a = 24 - 7

a = 17

Therefore, the numbers are 6 and 17.

8 0
3 years ago
Darya and Kana are both practicing to swim in a
alexandr402 [8]

Answer:

45.7 s

Step-by-step explanation:

Darya:

Number of laps = 13

Average time per lap = 23.5 seconds

Total time to swim 13 laps = Number of laps × Average time per lap

= 13 × 23.5

= 305.5 seconds

Kana:

Number of laps = 10

Average time per lap = 25.98 seconds

Total time to swim 10 laps = Number of laps × Average time per lap

= 10 × 25.98

= 259.8 seconds

It took longer for Darya to swim

13 laps than for Kana to swim 10 laps.

How much longer?

= 305.5 seconds - 259.8 seconds

= 45.7 seconds

7 0
3 years ago
Is 0.16 a integer and a rational
wariber [46]
No,0.16 is only a rational number.
6 0
3 years ago
It takes 3 people a total of 192 hours to build a wall. How long would it take if 12 people built the same wall?
Oxana [17]

Step-by-step explanation:

you need to solve this using fractions.

Example :

It takes 3 men 8 hours to build a wall. How long would it take 4 men to build the same wall?

For 3 men: It is 1 wall divided by 8 hours, which is 1/8.

For 1 man: It is 1/8 divided by 3, which is 1/24.

For 4 men: It is 1/24 multiplied by 4, which is 1/6, = 6 hours.

3 0
2 years ago
12. At a store each notebook has a cost of x dollars. Which situation
nadya68 [22]
C because x represent the cost of books while 2 can be an additional price for the pens
6 0
3 years ago
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