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MAVERICK [17]
3 years ago
11

Find the least common denominator (LCD) of 3 7 and 5 8

Mathematics
2 answers:
Alenkinab [10]3 years ago
7 0

Answer:

56

Step-by-step explanation:

7 is a prime number

7*8 = 56

The least common denominator is 56

3/7 * 8/8 = 24/56

5/8*7/7 = 35/56

Bess [88]3 years ago
5 0

Answer:840  

Step-by-step explanation:

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In June, a runner ran a mile in 7:45. In September, the runner ran a mile in 5:51.
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The percentage of Change in time is an decrease
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3 years ago
Suppose 2 /7 of students in your school wore shorts today. How many students would you have to select randomly, on average, in o
Sveta_85 [38]

Answer: 49 students

Step-by-step explanation:

2 /7 of students in a school wore shorts today. The number of students to be selected in order to get 14 students who will wear shorts to school will be:

Let the number of students that will be sampled be y. This will be:

2/7 of y = 14

2/7 × y = 14

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Cross Multiply

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8 0
3 years ago
??????????? ?????????
andre [41]

Answer:

C

Step-by-step explanation:

ok so they want you to put everything but y on one side

to get rid of the -4, you add 4 to both sides

you are then left with

2/3y=x+4

multiple both sdies by 3/2

y= 3(x+4)/2

divide everything by 2

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C

5 0
3 years ago
A service station checks Mr. Gittleboro's radiator and finds it contains only 30% antifreeze. If the radiator holds 10 quarts an
Andrew [12]

Answer:

2.86 quarts ( approx )

Step-by-step explanation:

Given,

The initial quantity of the Mr. Gittleboro's radiator that contains 30% antifreeze = 10 quarts,

Let x quarts of pure antifreeze replaced x quarts of Mr. Gittleboro's radiator to bring it up to a required 50% antifreeze,

So, the quantity of 30% antifreeze radiator after drained off x quarts = (10-x) quarts

Also, the quantity of final antifreeze radiator 50% antifreeze = 10 quarts

Thus, we can write,

30% of (10-x) + 100% of x = 50% of 10

30(10-x) + 100x = 500

300 - 30x + 100x = 500

300 + 70x = 500

70x = 200

x = 2.85714285714 quarts ≈ 2.86 quarts

4 0
3 years ago
Read 2 more answers
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