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Romashka-Z-Leto [24]
3 years ago
15

In 4 years, sravani will be 3 times as old as Makayla is currently. three years ago, sravani was 4 times as old as Makayla was t

hen. what are both of their resent ages?
Mathematics
1 answer:
77julia77 [94]3 years ago
3 0
X - Sravani
y - Makayala

x+4=3y\\
x-3=4(y-3)\\\\
x=3y-4\\
x=4y-12+3\\\\
x=3y-4\\
x=4y-9\\\\
3y-4=4y-9\\
4y-3y=-4+9\\
y=5\\\\
x=3\cdot5-4\\
x=15-4\\
x=11

Sravani - 11
Makayla - 5
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Answer:

3w+7

c^2 + 4c - 3

Step-by-step explanation:

8v+w+7-8v+2w

8v-8v +w+2w +7

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3w+7

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c^2+4c-3

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A certificate of deposit earns 1% interest every three months. The interest is compounded.
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How can sums and differences of cubes be identified for factoring?
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a³ + b³ = (a + b)(a² - ab + b²)

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--------------------------------------------------------------------------------------------------------------

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