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LUCKY_DIMON [66]
2 years ago
9

Need help please , I know the basic math. how do I solve this?

Mathematics
2 answers:
Maslowich2 years ago
7 0
Easy the answer is c 7/9 . First I did the dividing of 7/15 and 3/5 whenever u do this our teacher told us to do same change flip. 7/15 by 3/5 equals 7/15 times 5/3 which u would then multiply straight across and get 35/45 which when divided is simplified to 7/9. I hope this helped u!
Mkey [24]2 years ago
3 0
(7/15)/(3/5)
easy
(a/b)/(c/d)=(a/b)(d/c)
invert and multiply (what it does is it cancels the bottom and makes it one)
(7/15)/(3/5)=(7/15)(5/3)=35/45=7/9

answer is C
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Answer:

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Step-by-step explanation:

4 0
3 years ago
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Jorge bought x tickets to attend a football game and a baseball game. The expression 8x + 62 represents the total cost of the fo
rusak2 [61]

Answer:

21

Step-by-step explanation:

Let x be the amount of ticket for each game

Given

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If 9x + 34 represents the total cost of the baseball game. The total coat will be;

9(7)+34

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To know how much more football game costs, we will take the difference in their cost.

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5 0
2 years ago
Beaker A contains 1 liter which is 30 percent oil and the rest is vinegar, thoroughly mixed up. Beaker B contains 2 liters which
alekssr [168]

Answer:

1.25 liters of oil

Step-by-step explanation:

Volume in Beaker A = 1 L

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Volume of Oil in Beaker B = 2*0.4 = 0.8 L

Volume of Vinegar in Beaker B = 1*0.6 = 1.2 L

If half of the contents of B are poured into A and assuming a homogeneous mixture, the new volumes of oil (Voa) and vinegar (Vva) in beaker A are:

V_{oa} = 0.3+\frac{0.8}{2} \\V_{oa} = 0.7 \\V_{va} = 0.7+\frac{1.2}{2} \\V_{va} = 1.3

The amount of oil needed to be added to beaker A in order to produce a mixture which is 60 percent oil (Vomix) is given by:

0.6*V_{total} = V_{oa} +V_{omix}\\0.6*(V_{va}+V_{oa} +V_{omix}) = V_{oa} +V_{omix}\\0.6*(1.3+0.7+V_{omix})=0.7+V_{omix}\\V_{omix}=\frac{0.5}{0.4} \\V_{omix}=1.25 \ L

1.25 liters of oil are needed.

6 0
2 years ago
There are 750 toothpicks in a regular sized box. If a jumbo box is made by doubling all the dimensions of the regular sized box,
Serga [27]

To answer this, let the 3 sides of the regular sized rectangular box be x, y, and z.

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xyz=750

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So this is 8 times the original of xyz. Hence the jumbo box will have 8 times 750 number of toothpicks.

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7 0
3 years ago
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Since angle C is not 90 degrees, it's one of the acute angles
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Multiply each side by (10 inches):

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6 0
3 years ago
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