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Bezzdna [24]
3 years ago
8

Which of the statements below best describes direct variation?

Mathematics
1 answer:
REY [17]3 years ago
8 0
Direct variation is when one variable changes the other changes in proportion of the first, therefore all the above 
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The nth term of a sequence is n^2 -n-2 .find the sum of the first and third terms
Troyanec [42]

Answer:

2

Step-by-step explanation:

substitute n=1 and n=3 in the given equation

1 st term is (1)^2-1-2 = 1 -1 -2 = -2

3rd term is (3)^2-3-2 = 9-3-2=4

sum of 1st and 3rd term is -2 + 4 = 2

8 0
3 years ago
An elephant at the zoo maintains her weight by eating 2.5% of her body weight in food each day. If she maintains a constant weig
Lelu [443]

Answer:

  2100

Step-by-step explanation:

Multiply the rate by the time and the weight to find the amount per week.

  (2.5%/day)(6 tons)(2000 lb/ton)(7 days/week) = 2100 lb/week

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3 years ago
What is the product of 2r2 - 5 and 3r
faust18 [17]

Answer: 6r^3 - 15r

Step-by-step explanation:

(3r) (2r^2 - 5)

Distribute.

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Hope this helped.

8 0
3 years ago
I dont understand how to simplify an expression with exponents
Mashutka [201]

Answer:

3^4

Step-by-step explanation:

Simplifying an expression with expression with exponents:

If they are dividing, we keep the base and subtract the exponents. For example:

\frac{a^x}{a^y}=a^{x-y}

In this question:

\frac{3^2}{3^{-2}}=3^{2-(-2)}=3^{2+2}=3^4

8 0
11 months ago
A. cm³<br> B. cm²<br> C. cm <br><br><br> ASAP
True [87]
I would say b... hope this helps!!!!!!!
6 0
3 years ago
Read 2 more answers
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