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8090 [49]
3 years ago
15

Kristy's yearly salary is $75,000. How do you express this number in scientific notation?

Mathematics
1 answer:
tamaranim1 [39]3 years ago
6 0

Answer:

7.5000

Step-by-step explanation:

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What is the answer to this question I am really having trouble ??
masya89 [10]
<h3>Answer: Choice B</h3><h3>y = x^2 + 7x + 1</h3>

======================================

Proof:

A quick way to confirm that choice B is the only answer is to eliminate the other non-answers.

If you plugged x = 1 into the equation for choice A, you would get

y = -x^2 + 7x + 1

y = -1^2 + 7(1) + 1

y = -1 + 7 + 1

y = 7

We get a result of 7, but we want 9 to be the actual output. So choice A is out.

-----------

Repeat for choice C. Plug in x = 1

y = x^2 - 7x + 1

y = 1^2 - 7(1) + 1

y = 1 - 7 + 1

y = -5

We can eliminate choice C (since again we want a result of y = 9)

-----------

Finally let's check choice D

y = x^2 - 7x - 1

y = 1^2 - 7(1) - 1

y = 1 - 7 - 1

y= -7

so choice D is off the list as well

-----------

The only thing left is choice B, so it must be the answer. It turns out that plugging x = 1 into this equation leads to y = 9 as shown below

y = x^2 + 7x + 1

y = 1^2 + 7(1) + 1

y = 1 + 7 + 1

y = 9

And the same applies to any other x value in the table (eg: plugging in x = 3 leads to y = 31, etc etc).

3 0
3 years ago
Is 0.270 greater than 0.27 answer quick this us to double check
Nostrana [21]

Answer:

No, they're both equal

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP, PLEASE I NEED HELP
kow [346]

Answer:

Third one is correct

Step-by-step explanation:

8 0
3 years ago
What would the formula for #4 be?
n200080 [17]
Is there supposed to be a graph or another picture? I do not see anything.
6 0
3 years ago
Luke drove 150 miles in 4.what was his acerage dpeed​
quester [9]

Assuming you mean 4 hours.

Given that time = 4 hours and distance = 150 miles

Average speed = distance/time

                          = 150/4

                          = 37.5 miles per hour.

Please mark brainliest if this helps you.

3 0
3 years ago
Read 2 more answers
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