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Burka [1]
2 years ago
8

If a number is increased by 4, its square is increased by 64. Find the number

Mathematics
2 answers:
Anit [1.1K]2 years ago
5 0

Answer:

12

Step-by-step explanation:

12 - 4 = 8

The square of 8 is 64

quester [9]2 years ago
3 0

Answer:

6

Step-by-step explanation:

(n + 4)^2 = n^2 + 64

n^2 + 8n + 16 = n^2 + 64

8n = 48

n = 6

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6. Mrs. Sam buys pencils for $15 per one hundred packs.
Alexxx [7]

Answer:

a.) her loss is 5 dollars

b.) her profit is 10 dollars

c.) she should sell them for $0.15

4 0
2 years ago
Jon bought a printer for $189 and a set of printer cartridges for $192. Sales tax on these items was 6.5%. What is Jon's total b
julia-pushkina [17]
So first we need to find the total before tax. Let's add up the two prices:

189+192=381

So we know that the total before tax is $381. Now we are told that the sales tax on these items is 6.5%. It would be easier for us to convert 6.5% to a decimal in order to multiply. Let's convert 6.5% to a decimal by dividing by 100:

\frac{6.5}{100}=0.065

Now that we have the sales tax in decimal form, let's multiply this sales tax by the total amount of the items before tax ($381):

381*0.065=24.77

This means that $24.77 is the tax for this purchase. To find the total amount that Jon paid for these items after tax, you must add the tax to the total amount before tax to give you:

381+24.77=405.77

So now we know that Jon's total bill for these items is $405.77.
4 0
3 years ago
Is this right? I’m confused for answering either B or C.
boyakko [2]

your profile says you're 22 but I find that painfully challenging to believe. She knits 5 scarves in 2 hours. Divide 10 by 2, you get 5. 5x5 is 25. It's C. You shouldn't need help. This is sad.

3 0
3 years ago
Read 2 more answers
I really need help Can someone help me
denis-greek [22]
The answer is 3.800 because you round up
6 0
3 years ago
8p-5(p+3)=(7p-1)3<br> Please I really need help on this
4vir4ik [10]
The answer is p= 4.25
8 0
3 years ago
Read 2 more answers
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