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Nady [450]
3 years ago
9

please help, and explain, please use either GCF (greatest common factor) or LCM (Least Common Multiple), thank you.

Mathematics
1 answer:
Delvig [45]3 years ago
4 0
I believe it will be at 10:10 because the least common multiple of 10 and 12 is 60 therefore you add 60 minutes to 9:10.
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Which of the following is equal to 1/5^-2<br>A.1/25<br>B.-1/25<br>C.25<br>D.1/7
Ede4ka [16]

Answer:

  C.  25

Step-by-step explanation:

The applicable rule of exponents is ...

  a^b = 1/a^-b

Matching this pattern to your expression, you see that ...

  a = 5

  b = 2

Then ...

  1/5^-2 = 5^2 = 25

5 0
3 years ago
A sporting good store is offering an additional 30% off all clearance items and she purchases a pair of running shoes on clearan
Talja [164]

Answer:

Total discount = $39.50

                  or 46.47 %

Step-by-step explanation:

First we need to figure out what she will pay for the shoes.  She is getting 30 percent off the 65 dollars.

Discount = price * percent off

                = 65*.3

                = 19.50

The cost of her shoes is the price minus the discount.

Cost = 65- 19.5

        = 45.50


To find the total discount, take the original price and subtract the final cost.

Total discount = 85-45.50

                        = 39.50

To find the total percent discount, we use the formula

      total percent discount = (original - final)/original * 100

                                             = (85- 45.50)/85 * 100

                                             = 39.5/85*100

                                              = 46.47%

4 0
3 years ago
The price of an office chair was $86. The tax rate was 6%. What was the tax on the chair?
Tamiku [17]

Answer:

86

X.06

_____

516

+ 0000

_________

05.16

Step-by-step explanation:

3 0
3 years ago
the distance around a track is 400m. if you take 14 laps around the track what is the total distance you walk? use mental math
Olegator [25]

to do it in mental math: you can ignore the zeroes in 400 for now.

4*14 = 4*10 + 4*4 = 40 + 16 = 56

now add the zeroes back on: 5600m

6 0
3 years ago
Read 2 more answers
Each team in the softball league plays each of the other teams exactly once. If
Aleks04 [339]
<span>Each team in the softball league plays each of the other teams exactly once. For every game, there is 2 team playing. The order is not important because  A vs B is same as B vs A
So you just need to makes a combination of 2 that have a result of 21. If there is t number of teams, the number of matches would be:
tC2 = t!/2!(t-2)! = 21
</span>t! / (t-2)! = 21 *2
(t)(t-1)= 42
t^2 -t -42=0
(t-7)(t+6)
t=7 ; t=-6

Excluding the minus result, you got 7 teams.
6 0
3 years ago
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