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Andrews [41]
2 years ago
14

Multiply -10(-7x² + 5x)​

Mathematics
2 answers:
tatiyna2 years ago
7 0

Answer: 70x^2 -50x

Step-by-step explanation:

^ means exponent

Alexxx [7]2 years ago
6 0

Step-by-step explanation:

<u>Use the Distributive Property:</u>

<u />-10(-7x^{2} +5x)

70x^{2}-50x

70x^{2}-50x is your simplified expression.

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Need help please.........thank you
crimeas [40]
A²-b²=(a-b)(a+b)
4x² - 25= (2x)²- 5² =(2x-5)(2x+5)
You do not have this choice, so the answer is D.None of the above.

6 0
3 years ago
Read 2 more answers
If f(1) = 6 and f(n) = f(n − 1) +3, then f(7) =<br> (1) 10 (2) 24 (3) 15<br> (4) 18
Juliette [100K]

Answer:

24

Step-by-step explanation:

f(n) = f(n − 1) + 3

if n = 7 => f(7) = f(7-1) + 3 = f(6) + 3

if n = 6 => f(6) = f(6-1) + 3 = f(5) + 3

if n = 5 => f(5) = f(5-1) + 3 = f(4) + 3

if n = 4 => f(4) = f(4-1) + 3 = f(3) + 3

if n = 3 => f(3) = f(3-1) + 3 = f(2) + 3

if n = 2 => f(2) = f(2-1) + 3 = f(1) + 3

if f(1) = 6 then f(2) = 9

f(3) = 12

f(4) = 15

f(5) = 18

f(6) = 21

f(7) = 24

3 0
3 years ago
How does the increase in confidence level affect the interval width and margin of error?
meriva

Answer:

1. Three things influence the margin of error in a confidence interval estimate of a population mean: sample size, variability in the population, and confidence level. For each of these quantities separately, explain briefly what happens to the margin of error as that quantity increases.

Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases. Incidentally, population variability is not something we can usually control, but more meticulous collection of data can reduce the variability in our measurements. The third of these—the relationship between confidence level and margin of error seems contradictory to many students because they are confusing accuracy (confidence level) and precision (margin of error). If you want to be surer of hitting a target with a spotlight, then you make your spotlight bigger.

8 0
2 years ago
Read 2 more answers
Complete the steps to solve the inequality: 0.2(x + 20) – 3 &gt; –7 – 6.2x
sergeinik [125]
The answer is A.(x>-1.25)
5 0
3 years ago
Read 2 more answers
What point is located at (1,-2)?
guapka [62]

Answer:

At point A

Step-by-step explanation:

As the x axis has -2 and y axis has 1

They are present in second quadrant

so (-1,2) is in point A

6 0
1 year ago
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