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Alex777 [14]
3 years ago
9

8. The square of a number decreased by 3 times the number is 28. Find all

Mathematics
1 answer:
Llana [10]3 years ago
3 0
The answer is 7 i think
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I don't know how to do this problem:
mariarad [96]

Answer:

3^3×3

81

3^7/3^3

Explanation:

First you should solve the expression you've got there.

(3^6×3^-4)^2

3^6= 3×3×3×3×3×3 the answer is 729

3^-4 A negative exponent means repeated division by the base. So for example 2^-4=1/(2^4)

=1/(2×2×2×2)= 1/16

3^-4= 1/(3^4)

=1/(3×3×3×3)

= 1/81 If you look up the answer in your calculator the answer that will show up will be 0.01234567901

So!

(729×0.01234567901)^2= 9^2

9^2= 81

Now you can look at the following expressions and whichever gives the answer 81 will be correct.

hope it helps!

8 0
3 years ago
I new help with number 1 and number 2
Natalka [10]
I hope this helps you

4 0
3 years ago
Triangle 1 is a scale drawing of Triangle 2, as shown below.
Elan Coil [88]
You need to show us what the triangle is
4 0
2 years ago
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Brian has reduced his cholesterol level by 6% by following a strict diet and regular exercise. If his original level was 280, wh
SashulF [63]
The answer is c 263 I hope this helps
6 0
2 years ago
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Joanie bought a total of 56 presents to put in 7 gift bags.She put 3 pencils and an equal number of stickers in each bag.How man
amid [387]

Answer:

5 stickers were put in each bag.

Step-by-step explanation:

There is a total of 56 presents and 7 gift bags. If she puts three pencils in each bag, 7 times 3 is 21. 56 presents minus 21 pencils is 35 presents left. 35 divided by 7 is 5, so there are 5 stickers in each bag.

7 0
2 years ago
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