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svetoff [14.1K]
3 years ago
15

2x(x + 3) = 5x - 4standard form​

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

did you make a typo? there is no real solution

Step-by-step explanation:

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I need help on this I am just going to use the picture
Radda [10]

Answer:

D

Step-by-step explanation:

let y = f(x), that is

y = \frac{2x-3}{5}

Rearrange making x the subject

Multiply both sides by 5

5y = 2x - 3 ( add 3 to both sides )

5y + 3 = 2x (divide both sides by 2 ) , then

x = \frac{5y+3}{2}

Change y back into term of x, hence

f^{-1}(x) = \frac{5x+3}{2} → D

4 0
3 years ago
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Carter drank 15.75 gallons of water in 4 weeks. He drank the same amount of water each day. Estimate how many gallons he drank i
Umnica [9.8K]

Answer:

Carol drank 0.5625 gallon of water in one day.

Step-by-step explanation:

Carter drink 15.75 gallons of water in 4 weeks. Each week consists of 7 days, then there are days in for weeks.

So, it is 15.75 divided by 28 (28 days in 4 weeks)

3 0
3 years ago
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A media poll of 500 air travelers surveyed in national airports found that 370 favor tighter security procedures in boarding pla
serg [7]

Answer:

92% Confidence interval:  (0.7078,0.7722)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 500

Number of travelers who favor tight security, x = 370

\hat{p} = \dfrac{x}{n} = \dfrac{370}{500} = 0.74

92% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.08} = \pm 1.645

Putting the values, we get:

0.74\pm 1.645(\sqrt{\dfrac{0.74(1-0.74)}{500}}) = 0.74\pm 0.0322\\\\=(0.7078,0.7722)

3 0
4 years ago
What is 4 3/7 written as an improper fraction?
aleksley [76]
31/7
First you multiply the denominator(7) by the whole number(4) then you would add the numerator(3) to get the new numerator place the new numerator(31) I’ve the old denominator(7)
I hope this helps
5 0
3 years ago
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What kind of transformation does the graph show?
Yakvenalex [24]
It looks like a slide because it looks to be shifted not flipped or changed in other way.
4 0
3 years ago
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