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3 years ago

Please help me with this question:)

Mathematics

1 answer:

tester [92]3 years ago

3 0

Answer:

Ada is correct.

Step-by-step explanation:

Problems with Naman:

Naman is supposed to follow PEMDAS, which is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplications

Division

Addition

Subtraction

The mistake: Naman moved +6 to the left and added it to the 2 located on the left side of the expression. You cannot do that, as it breaks the law of PEMDAS. On the other hand, Ada did the correct thing, which was to distribute 2 to all terms within the parenthesis (as one term in the parenthesis has a variable, and the other is a constant, meaning that they cannot be combined). This leads to Naman not doing the rest of the question correct.

Next, Ada correctly combined the two constants, which resulted in 0. 0 means nothing, therefore the placeholder is not needed. Therefore, 8x is the final answer.

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If y =x^2 + 3x - 5, find y when

Andrei [34K]

Answer:

yes it is -1

Step-by-step explanation:

you made something wrong in the power 2 where x power 2 removes the negative sign

or u didn't enter in the calc this sign(....)^2

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3 years ago

a hardware store paid $87.50 for a lawn mower and then sold it for $159.95 what was the gross profit

kifflom [539]

The gross profit is $72.45

The percentage profit is 82.8%

Step-by-step explanation:

The profit is the earning on selling a product or item in price more than its purchasing price.

Given

Purchase price of Lawn mower = $87.50

Sale price = $159.95

Profit = Sale Price - Purchase Price

=159.95-87.50

=72.45

The percentage profit is:

$Percentage\ Profit=\frac{Profit}{Purchase\ price}*100\\=\frac{72.45}{87.50}*100\\=0.828*100\\=82.8\%$

The gross profit is $72.45

The percentage profit is 82.8%

Keywords: Profit, Profit percentage

Learn more about profit at:

#LearnwithBrainly

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4 years ago

If I have 4 A’s and 1 B, what is my GPA?

svetoff [14.1K]

Answer:

3.8

Step-by-step explanation:

Hey! Let's start by assuming that these are all normal courses, and that <u>GPA is given by the following scale:</u>

A - 4.0

B - 3.0

C - 2.0

D - 1.0

F - 0.0

That said, this question really just involves calculating the averages.

To find the average, we add all the values together and divide the sum by the total number of values.

<u>Therefore, our expression would look like:</u>

(4.0 + 4.0 + 4.0 + 4.0 + 3.0)/5

This is because there are 5 total values.

Simplify:

19/5

3.8

This means your GPA would be 3.8

8 0

2 years ago

Read 2 more answers

Find the measure of ZB.

RoseWind [281]

The sum of the inside angles of a triangle, always sum up to 180 degrees. Using this information, we can create the following equation for this problem: