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3 years ago

What is 1/3 × x2 - 5x + 7 ( -8 )?

Mathematics

1 answer:

kiruha [24]3 years ago

8 0

Answer:

1/3x^2 - 5x - 56

Step-by-step explanation:

Use order of operations (PEMDAS).

1/3 × x2 - 5x + 7 ( -8 )

Parentheses first:-

= 1/3 * x^2 - 5x - 56

Next the multiplication:-

= 1/3x^2 - 5x - 56 (answer)

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Step-by-step explanation:

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Bob paid $54 for shoes if they were on sale for 10% off what was the original price

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2 years ago

Solve the equation R-3=28/R R=

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3 years ago

A man is on a diet and goes into a shop to buy some turkey slices. He is given 3 slices which together weigh 1/3 of a pound, but

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3 years ago

on a certain hot Summer's Day 613 people use the public swimming pool the daily prices are $1.75 for children $2.25 for adults t

Elodia [21]

389 children and 224 adults were at the pool that day.

Step-by-step explanation:

Cost of one child ticket = $1.75

Cost of one adult ticket = $2.25

Total people = 613

Total receipts worth = $1184.75

Let,

Number of children = x

Number of adults = y

According to given statement;

x+y=613 Eqn 1

1.75x+2.25y=1184.75 Eqn 2

Multiplying Eqn 1 by 1.75

$1.75(x+y=613)\\1.75x+1.75y=1072.75\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(1.75x+2.25y)-(1.75x+1.75y)=1184.75-1072.75\\1.75x+2.25y-1.75x-1.75y=112.00\\0.50y=112.00$

Dividing both sides by 0.50

$\frac{0.50y}{0.50}=\frac{112.00}{0.50}\\y=224$

Putting y=224 in Eqn 1

$x+224=613\\x=613-224\\x=389\\$

389 children and 224 adults were at the pool that day.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago