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3 years ago

Help me please ASAP need to get this done.

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

4 0

A) 39 mph
B) 15 mph and 28 mph
C) Median
D) Median
E) It shows the median speed.
Not sure if this is right but it's what I'm thinking... :)

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(1/27)^x-6=27 Could I please have a step by step as well? Much appreciated!

Andrei [34K]

Answer:

$x = 7$

Step-by-step explanation:

1) Use Division Distributive Property: (x/y)^a = x^a/y^a.

$\frac{1}{ {27}^{x - 8} } = 27$

2) Multiply both sides by 27^x - 8.

$1 = {27} \times 27^{1 + x - 8}$

3) Use the product rule: x^a x^b = x^a+b.

$1 = {27}^{1 + x - 8}$

4) Simplify 1 + x - 8 to x - 7.

$1 = {27}^{x - 7}$

5) Use Definition of Common Logarithm: b^a = x if and only if logb (x) = a.

$log_{27}1 = x - 7$

6) Use Change of Base Rule.

$\frac{ log_1 }{ log{27} } = x - 7$

7) Use rule of 1: log 1 = 0.

$\frac{0}{ log_{27}} = x - 7$

8) Simplify 0/log_27 to 0.

$0 = x - 7$

9) Add 7 to both sides.

$7 = x$

10) Switch sides.

$x = 7$

Therefor, the answer is x = 7.

5 0

2 years ago

A 4-column table with 3 rows. Column 1 has entries run, do not run, total. Column 2 is labeled lift weights with entries 40, bla

alexandr1967 [171]

Answer:

A Totals row in Access helps you see, at a quick glance, what the totals are for columns on a datasheet. For example, in a table of purchase information, we can show the sum of the price, or units purchased, or a total count of the items by adding a Totals row to the datasheet:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Round 48.47 to the ones place

WINSTONCH [101]

Answer:

48.7 I think

Step-by-step explanation:

hears the sender buddy

5 0

2 years ago

Read 2 more answers

Amber says 2.76/6 gets an answer of 0.19.Is Amber's answer reasonable. (Choose One) A:No,because 0.2x3=0.6 B:No,because 0.2x6=1.

Butoxors [25]

Answer:

No, her answer is unreasonable because 0.2 * 6 = 1.2

Step-by-step explanation:

Here in this question, we are trying to use an approximation to see if what was said to be the result of a calculation is reasonable as an answer.

Looking at her division, 2.76/6 = 0.19

To the nearest tenth , 0.19 is same as 0.2, now multiplying 0.2 by 6, what we have is 1.2 ( of which even 0.19 * 6 is expected to be less than this). we can see that this value is quite far from our expected answer of 2.76 which makes the answer an unreasonable one

Thus, the division 2.76/6 = 0.19 is not a reasonable answer

5 0

2 years ago

Which best describes the relationship between the successive terms in the sequence shown?

ahrayia [7]

Answer:

(C)The common ratio is –2.0

Step-by-step explanation:

Given sequence:

2.4, –4.8, 9.6, –19.2

This is not AP as the difference in terms is not common

This is GP with the common ratio of -2 as:

-19.2/9.6 = 9.6/ -4/8 = -4.8/2.4 = -2

Correct choice is (C)

4 0

2 years ago