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kumpel [21]
3 years ago
13

4) Sophie checks her bike for repairs every 9 days and Susan check hers every 12 days.

Mathematics
1 answer:
musickatia [10]3 years ago
6 0

Answer:

20

Step-by-step explanation:

12+9=20

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Danny charges $18 for 2 hours of swimming lessons, Martin charges $80 for 5 hours of swimming lessons.
Lelechka [254]

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danny's offer is cheaper

Step-by-step explanation:

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Find the least common multiple for 6(x+1)^3(x-4)^2 and 10(x+1)^8(x-4)^5
dolphi86 [110]

Answer:

30(x+1)^8 (x-4)^5

Step-by-step explanation

<h3>6(x+1)^{3}(x-4))^{2}=2X3 X (x+1)^3(x-4)^2\\10(x+1)^8(x-4)^5)= 2X5X(x+1)^8 (x-4)^5\\</h3>

In order to find the Least common multiple we write each of the factor only once from each of the expression and for the common expression we take their LCM as maximum of the exponent in  all expressions

as here in the question exponent of (x+1) are 3 and 8 so we take exponent 8

likewise for (x-4) we shall take maximum of 2 and 5 which is 5

so our expression for Least common multiple will be

2X3X5 X (x+1)^8 (x-4)^5

30(x+1)^8 (x-4)^5

7 0
3 years ago
Christine runs 10 miles in 75 minutes. At the same rate, how many miles would she ru<br> I miles
Len [333]

Answer:

\frac{46}{5}  miles  [or, 9.2 miles]

Step-by-step explanation:

<u>Complete Question:</u>

Christine runs 10 miles in 75 minutes. At the same rate, how many miles would she ru n in 69 minutes?

<u>Solution:</u>

We need to find the unit rate first and then find our answer. To get unit rate, we need to know the number of miles she runs in "1 minute". So, we will divide number of miles by number of minutes, that is given. Hence:

\frac{10}{75}=\frac{2}{15}

That means in 1 minute, Christine runs 2/15th of a mile.

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In decimal, doing division, that is 9.2 miles

7 0
3 years ago
Subtract 6 1/2 from 9
puteri [66]

Answer:

9 - 6 1/2 = 2.5

7 0
4 years ago
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