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larisa [96]
3 years ago
10

A quantity of food would last a family of 5 for 21days. How long would the same quantity last a family of 7 if they all eat at t

he same rate?
Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0
15 days
5x21=105 the amount of food they have
105/7=15 days of food for a family of 7
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If 3x + 2 = 6, what is the value of x?
svetlana [45]

Answer:

x = \frac{4}{3}

Step-by-step explanation:

Given

3x + 2 = 6 ( subtract 2 from both sides )

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x = \frac{4}{3}

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Easy question.

So, the slope is -x and the y-intercept is at -4.

y = -x - 4

Use this equation and you will find:

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3 years ago
Mindy can travel 51 miles on her motorbike in the same time it take Keith to travel 22 miles
SIZIF [17.4K]

Answer:

Example to help you out!

May rides her bike the same distance that leah walks. may rides her bike 10 km/h faster than leah walks. if it takes may 1 h and leah 3 h to travel that distance, how fast does each travel?

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May DATA:

time = 1 hr. ; rate = x+10 mph ; distance = rt = (x+10)*1 mi

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Leah DATA:

time = 3 hr. ; rate = x mph ; distance = rt = 3x mi

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Equation:

distance = distance

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x = 5 mph (Leah's rate)

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Step-by-step explanation:

3 0
3 years ago
The perimeter of a triangle is 7272 cm. the longest side is 66 cm less than the sum of the other two sides. twice the shortest s
VashaNatasha [74]
Suppose the three sides are a, b, and c, with c being the longest, a being the shortest
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second equation: 2a=c-55=> c=2a+55
plug c=2a+55 into the first equation: 2a+55= a+b-66 => b=a+121
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4 0
3 years ago
Express the following in standard form (0.000000045)^4 please answer​
poizon [28]

Answer:

4.100625*10^{-30}

Step-by-step explanation:

0.000000045=4.5*10^{-8}

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3 0
3 years ago
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