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Sunny_sXe [5.5K]
3 years ago
5

Create an expression equivalent to 4(2x−3)−6x+7 using the least number of terms.

Mathematics
1 answer:
choli [55]3 years ago
6 0

Answer:

2x-5

Step-by-step explanation:

First solve for the parenthesis:

4(2x-3) = 8x-12

8x-12-6x+7

Change all minus signs to plus signs:

8x+-12+-6x+7

Now you can use the communicative property to move the terms around:

8x+-6x+-12+7

Then change all "+-" to "-"

8x-6x-12+7

8x-6x=2x

-12+7=-5

2x-5

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Solve each exponential equation by using properties of common logarithms. When necessary, round answers to the nearest hundredth
lisabon 2012 [21]

Answer:

0.08

Step-by-step explanation:

Please use parentheses to indicate which operations must be done first.  I 'm choosing to believe that you meant 7^(3x-1) and 5^(x-1).

Taking the common log of both sides, we get:

(3x-1)log 7 = (x-1)log 5

Then 3x·log 7 - log 7 = x log 5 - log 5

Grouping the x terms:

x(3·log 7 - log 5) = log 7 - log 5.  We combine log 7 and log 5, obtaining log (7/5).

Then x(3·log 7 - log 5) = log (7/5).

Solving for x:

      log (7/5)

x = ---------------------

      3·log 7 - log 5

        0.1461

x   = ------------- = 0.08

         1.0363

This agrees with the 3rd answer choice.

7 0
3 years ago
A simple random sample of 30 residents from Seattle is taken to estimate the median income of all Seattle residents.
IRISSAK [1]

Answer:

The correct answer is Non-representative.

Explanation:

When a non-representative study is conducted. The researchers face or seek random samples in order to make their studies. On the other hand, a representative study is conducted with the purpose of looking for more specific or accurate samples.

3 0
3 years ago
What form is this equation in? y + 6 = (1/2)(x - 4)
maks197457 [2]
Y +6 =(1/2)(x+4)

y +6 = 1/2 x +2
y=1/2 x - 4

or 1/2 x -y = 4 
7 0
3 years ago
Read 2 more answers
0.8% of 150 is what number?
lisov135 [29]
The answer: 1.2

Work:
2 equations: 150=100% and x=0.8%
Combine these
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What is + (25% of 1)?​
Olin [163]

Answer:

the answer is 0.25

Step-by-step explanation:

6 0
3 years ago
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