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3 years ago

27 students in all 4:5 packed lunch. how many students packed lunch

1 answer:

5 0

$\bf \stackrel{total}{27}\qquad 4:5\qquad \cfrac{4}{5}\implies \cfrac{4\cdot \frac{27}{4+5}}{5\cdot \frac{27}{4+5}}\implies \cfrac{4\cdot 3}{5\cdot 3}\implies \cfrac{\stackrel{packed~lunch}{12}}{\stackrel{did~not~pack~lunch}{15}}$

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3 years ago

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Answer:

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Option (C) is correct.

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As given

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4 years ago

Pleaseee solve i need in at least 5 mins

inna [77]

G=11 because the math and the numbers all add one to one round number

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3 years ago

X+y=0.5<br> x-y=1<br> elimination meathod

user100 [1]

Answer:

$x=0.75, y=-0.25$

Step-by-step explanation:

We can add the two equations to eliminate $y$ and solve for $x$ .

$x+y+x-y=0.5+1$

$2x=1.5$

$x=0.75$

Now, we can find for $y$ by using substitution:

$x+y=0.5$ (given)

$0.75+y=0.5$

$y=-0.25$

Hope this helps :)

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3 years ago

A hypothetical square grows so that the length of its diagonals are increasing at a rate of 8m/min. How fast is the area of the

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3 years ago

Read 2 more answers