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2 years ago

I really need some help here.

Mathematics

1 answer:

Y_Kistochka [10]2 years ago

8 0

Answer:

a 1/7

Step-by-step explanation:

The given proprty is

a 1/n = n√a ...(i)

The given expression is

7√a ...(ii)

on comparing (i) and (ii), we get

n = 7

Using (i) the given expression can be written as

7√a = a 1/7

Therefore, the required expression is

a 1/7

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Step-by-step explanation:

50 is bigger than 20, so it's decreasing and the units are the same.

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Jenn and David shared a candy bar. Jenn are three tenths. David ate four tenths. How much is left?

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3 years ago

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Four glasses of milk and 2 snack bars have a total of 72 carbohydrates (carbs), and 2 glasses of milk and 3 snack bars have a t

Travka [436]

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Step-by-step explanation:

Let,

Glass of milk = x

Snack bar = y

According to given statement;

4x+2y=72 Eqn 1

2x+3y=64 Eqn 2

Multiplying Eqn 2 by 2

$2(2x+3y=64)\\4x+6y=128\ \ \ Eqn\ 3$

Subtracting Eqn 1 from Eqn 3

$(4x+6y)-(4x+2y)=128-72\\4x+6y-4x-2y=56\\4y=56$

Dividing both sides by 4

$\frac{4y}{4}=\frac{56}{4}\\y=14$

Putting y=14 in Eqn 1

$4x+2(14)=72\\4x+28=72\\4x=72-28\\4x=44$

Dividing both sides by 4

$\frac{4x}{4}=\frac{44}{4}\\x=11$

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago