Ask question

Ask question

All categories

3 years ago

14

Krissy ran three miles one morning she ran the first mile in 11. 74 minutes the second mile in 11. 26 minutes in the third mile

in 12.12 minute Rounded to the nearest hundredth what is the total number of minutes that it took Krissy to run these three miles?

1 answer:

gladu [14]3 years ago

8 0

Add up all the miles- 11.74+12.12+11.26 is 35.12. 34.12 minutes is the answer

You might be interested in

Having a small brain moment, can you please help and show work

ankoles [38]

Answer:

The value if x is 0.9875.

Step-by-step explanation:

First, we have to get rid of brackets by expanding :

$0.5(2x + \frac{3}{4} ) - \frac{1}{3} (0.1 + x) = 1$

$0.5(2x) + 0.5( \frac{3}{4} ) - \frac{1}{3} (0.1) - \frac{1}{3} (x) = 1$

$x + \frac{3}{8} - \frac{1}{30} - \frac{1}{3} x = 1$

Next you have to collect like terms :

$x - \frac{1}{3} x + \frac{3}{8} - \frac{1}{30} = 1$

$\frac{2}{3} x + \frac{41}{120} = 1$

Lastly, you can solve x :

$\frac{2}{3} x = 1 - \frac{41}{120}$

$\frac{2}{3} x = \frac{79}{120}$

$x = \frac{79}{120} \div \frac{2}{3}$

$x = \frac{79}{80}$

$x = 0.9875$

8 0

3 years ago

Factorise : x^2+x-72 Step by Step

Ivan

Answer:

(x + 9)(x - 8)

Step-by-step explanation:

f(x) = x^2 + x - 72

= x^2 - 8x + 9x - 72

= (x^2 - 8x) + (9x - 72)

= x(x - 8) + 9(x - 8)

= (x + 9)(x - 8)

4 0

3 years ago

Read 2 more answers

What is the value of a in the equation a = 2 + 3a + 6?

gulaghasi [49]

A = 2+3a +6

a-3a = 8

-2a = 8

a = -8/2 = -4

3 0

3 years ago

The sum of a number and five more than the number is less than fifteen

SIZIF [17.4K]

Answer: 5

Step-by-step explanation:

7 0

4 years ago

Which fraction is equivalent to 5/9?<br> A. 9/13<br> B. 20/36<br> C. 25/81<br> D. none of the above

valkas [14]

Answer:

B

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers