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mina [271]
2 years ago
15

In the first 3 3/4 hours of a marathon, Susan ran at an average speed of

Mathematics
1 answer:
AfilCa [17]2 years ago
5 0

Answer:

0.125 miles per minute

Step-by-step explanation:

ran 3 miles: 9.5 min per mi × 3 mi = 28.5 minutes = 28 minutes, 30 seconds How to calculate running speed. Divide your run distance by your run time; If you ran 2.5 miles and you ran for 20 minutes: 2.5 mi ÷ 20 min = 0.125 miles per minute

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Help me out please !!!!
Brums [2.3K]

Answer:

0.06 liters

Step-by-step explanation:

acid concentration of 65% means that it of 100 units of that solution 65 are acid, and the remaining 35 are water.

so, 100 units are 0.2 liters in this example.

that means that 65/100 × 0.2 = 0.13 liters are acid.

35/100 × 0.2 = 0.07 liters are water

we get a 50% concentration, when we have the same amount of water and acid in the solution (acid is only half of 50% of the solution).

the account of acid remains the same, as we are only adding water.

so, how much water do we need to get from 0.07 liters to 0.13 liters (the same as the already present acid) ?

0.13 - 0.07 = 0.06 liters

4 0
3 years ago
Write the equation of the circle that is tangent to the y-axis.<br> Its center is at (-3,5).
abruzzese [7]

Answer:

¿De que manera usted se informa a la hora de elegir un candidato presidencial? ENTRAR AL LINK es una encuesta de 1 pregunta ,GRACIAS

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Step-by-step explanation:

5 0
2 years ago
–4b + 8c + 12 – 8b – 2c + 6
sertanlavr [38]

Answer:

-24

Step-by-step explanation:

-4-8= -12

8-2=6

12+6=18

-12b+6c+18

Greatest common factor = 6

-12/6=-2

6/6=1

18/6=3

D 6(-2b+1c+3)

-12(2)+6(-3)+18

-24+(-18)+18

-42+18= -24

-24

7 0
2 years ago
Read 2 more answers
Find a rational number that that is between 9.5 and 9.7 explain why it is a rational?
lisabon 2012 [21]

Answer: 9.6

Step-by-step explanation: A rational number can be written as a ratio of two integers (9.6 can write as 96/10)

3 0
3 years ago
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I need help with this pls
shtirl [24]

Answer:5

Step-by-step explanation:

8 0
2 years ago
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