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Alexxx [7]
3 years ago
10

The sale tax on the purchase of a refrigerator that cost 695 is 7 percent.What is the amount of sales tax

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0
The answer is .07 × 695 = 48.65
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What is the completely factored form of d4 − 81?
lilavasa [31]

For this case we must factor the following expression:

d ^ 4-81

Rewriting the expression:

(d ^ 2) ^ 2-9 ^ 2

We factor using the formula of the square difference:

a ^ 2-b ^ 2 = (a + b) (a-b)

Where:

a = d ^ 2\\b = 9

So:

(d ^ 2 + 9) (d ^ 2-9)

From the second term we have:

d ^ 2-3 ^ 2 = (d-3) (d + 3)

Finally, the factored expression is:

(d ^ 2 + 9) (d-3) (d + 3)

Answer:

(d ^ 2 + 9) (d-3) (d + 3)

4 0
3 years ago
Read 2 more answers
Helen walk 2 3/4 miles per day. Bill run's 10 miles every 4 days. In 4 days, who runs the longest distance
Gennadij [26K]
Helen runs the longest distance in 4 days.

Helen (In 4 days): 2.75 x 4 = 11

Bill (In 4 days): 10

11 (Helen) > 10 (Bill), so therefore Helen runs the longest distance in 4 days.
5 0
3 years ago
Simplify (6 +i)(8 – 3i)<br><br> 51 – 10i<br> 48 – 32i<br> 45 – 10i<br> 48 – 10i – 3i^2 ...?
mote1985 [20]
<span>= 48 - 18i + 8i - 3i</span>²<span>
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4 0
3 years ago
Question with last attempt is displayed for your review only
Alika [10]

Answer:

43.13 = 5.25h + 9

Step-by-step explanation:

Let's solve this by making an equation.

$9 for the helmet, and $5.25 per hour.

h will stand for hours, C will stand for Amanda's cost.

C = 5.25h + 9

Now, substitute in what we learned from the problem.

43.13 = 5.25h + 9

This is an equation you can use to solve for the hours.

3 0
2 years ago
How can you use the multiplication property of equality to rewrite the equation 0.6x + 4.8 = 7.2
Kobotan [32]
0.6x + 4.8 = 7.2 

0.6x=7.2-4.8 

0.6x=2.4 

x=4
7 0
3 years ago
Read 2 more answers
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