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3 years ago

Which operation should be performed last in this problem: 3^2 + 7 × 4? Why?

Mathematics

2 answers:

SVEN [57.7K]3 years ago

8 0

Answer:

3^2+7*4~ Addition should be last

Step-by-step explanation:

Parenthesis ----- Addition is second to last in order of operations

Exponents

Multiplication

Division

Addition

Subtraction

Lerok [7]3 years ago

3 0

Answer:

27+28

Step-by-step explanation:

Because of pemdas (parenthesis)(exponents)(multiplication(division)(add)(subtract) so you do then exponent first which gives you 27, then 7x4 is 28, then lastly you add 27+28

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Acellus help slope intercept

Serjik [45]

Greetings.

The answer is y = 2x + 7.

Explanation:

If you are an expert in graph then you are able to find the slope without calculating. (Rise over Run by looking at the graph.)

We can also find the slope by calculating m-value.

$m=\frac{y_2-y_1}{x_2-x_1}$ ---> Rise Over Run

But how are we gonna calculate if we don't have any two given ordered pairs?

The answer is, we can just pick two ordered pairs that are part of the graph, or rather say that the graph passes through.

The graph passes through (-3,1) and (-2,3).

Then we can calculate the slope by using rise/run.

$m=\frac{3-1}{-2-(-3)}\\m=\frac{2}{-2+3}\\m=\frac{2}{1}\\m=2$

Thus, the slope is m = 2.

However, we are not done yet. We just only found out the slope. We need to find the y-intercept too.

From Linear Function - $y=mx+b$

Where m = slope and b = y-intercept.

Since b = y-intercept, we don't need to calculate/substitute x = 0. We simply find which number the graph has y-intercept at.

Which is (0,7), the y-intercept.

Then we substitute b = 7 as y-intercept.

Thus the answer is $y=2x+7$

3 0

3 years ago

2.64 × 10^-8 in standard form

schepotkina [342]

Well i think that is already in standard form

8 0

3 years ago

|-4| - 8 + 10 = ??? answer for points

Elis [28]

Answer:

Step-by-step explanation:

As you might know, the two lines surrounding the -4 represent the absolute value, which is basically the distance from 0, and the distance is always positive. To clear any confusion, the absolute value of positive number will not be it's opposite because remember, distance is always positive, so absolute value is always positive (because it is basically the distance from zero).

To help, here is an example (that is not related to the problem!):

|-6| = 6

|6| = 6

Now, back to the problem...

Since you now know that the absolute value is always positive, |-4| would equal 4. So now you have:

4 - 8 + 10 = ???

From here, you can just solve and the answer is 6, so:

4 - 8 + 10 = 6

You final answer is 6.

Hope this helped somehow :D

4 0

3 years ago