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Montano1993 [528]
3 years ago
9

Pls help Which two values are equivalent to 7^3x 7^-6 ?

Mathematics
1 answer:
IRINA_888 [86]3 years ago
3 0

Answer:

B. and D.

Step-by-step explanation:

When you multiply exponents, you add them

3 + (-6) = -3

The base always stays the same

{7}^{ - 3}

is one answer

{x}^{ - n}  =  \frac{1}{ {x}^{n} }

Do this formula for the question and you get 1/(7^3)

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Suppose y varies directly with x. If y = –20 when x = 2, find y when x = 14
Natasha_Volkova [10]

Answer:

y = -140

Step-by-step explanation:

Y varies directly with x

y = kx

We know y = -20 when x =2, we can solve for k

-20 = k*2

Divide each side by 2

-20/2= 2k/2

-10 =k

y = -10x

Now we want to find y when x = 14

y = -10 *14

y = -140

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3 years ago
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Answer:

376 feet high standard

Step-by-step explanation:

above sea level its positive

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What is 2/3 as many as 18
vladimir1956 [14]
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2 years ago
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Use doubles mines one to solve 8+7.Write the number sentence.
vlada-n [284]

Answer:

15

Step-by-step explanation:

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Then take one away from 16 and that would equal 15

7 0
3 years ago
How do I solve |5-3p|+9=13p+8
anastassius [24]

Answer:

p = -2/5 or 3/8

Step-by-step explanation:

|5 − 3p| + 9 = 13p + 8

|5 − 3p| = 13p − 1

If 5 − 3p is positive:

5 − 3p = 13p − 1

6 = 16p

p = 3/8

If 5 − 3p is negative:

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Alternatively, we can square both sides of the equation:

(5 − 3p)² = (13p − 1)²

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0 = 40p² + p − 6

0 = (5p + 2) (8p − 3)

p = -2/5 or 3/8

8 0
3 years ago
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