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3 years ago

Mary says that -5 x 2 = -3. Explain the mistake Mary made and write the correct number sentence including the correct answer.

Mathematics

2 answers:

MrRissso [65]3 years ago

6 0

Answer:just report it or sumthing

Step-by-step explanation:

stira [4]3 years ago

4 0

Answer:

it should be -10

Step-by-step explanation:

5 x 2 is 10 but you add the negative. Mary added instead of multiplied.

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3 years ago

Micheal took his brother to the movies. Micheal paid regular price, but it cost $2 less for his brother at the child price. It c

iren [92.7K]

It cost $5 for his brother's ticket.

Step-by-step explanation:

Let,

Micheal's ticket price= x

His brother ticket price = y

According to given statement;

x+y=12 Eqn 1

y = x-2 Eqn 2

Putting value of y from Eqn 2 in Eqn 1

$x+(x-2)=12\\x+x-2=12\\2x=12+2\\2x=14\\$

Dividing both sides by 2;

$\frac{2x}{2}=\frac{14}{2}\\x=7$

Putting x=7 in Eqn 2

$y=7-2\\y=5$

It cost $5 for his brother's ticket.

Keywords: linear equation, substitution method

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4 years ago

What percent is of 80 is 15?

pashok25 [27]

Answer:

The answer is 18.75

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3 years ago

Does anyone understand how to solve this?

Nataliya [291]

a f(a) is the function f(x) where x is replaced by a.

So we have

(3x^2 + x + 3 - (3a^2 + a + 3)) / ( x - a)

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b (3(x + h)^2 + x + h + 3 - (3x^2 + x + 3)) / h

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jek_recluse [69]

Answer:

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Step-by-step explanation:

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