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Zinaida [17]
3 years ago
14

I need some help pls :'(

Mathematics
1 answer:
Luda [366]3 years ago
4 0

Answer:

a

Step-by-step explanation:

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If f(x) = 2x2 – 2, what is<br> X, what is f(-6)<br> give the right answer for a brilliant!
NARA [144]

Answer:

f(- 6) = 70

Step-by-step explanation:

To evaluate f(- 6) , substitute x = - 6 into f(x)

f(- 6) = 2(- 6)² - 2 = 2(36) - 2 = 72 - 2 = 70

5 0
3 years ago
Kenny has $1,400 in the bank. He earns $150 every week at his afterschool job. What is the rate of change for the scenario descr
Vadim26 [7]
<span>The rate of change would be equal to the amount of money that Kenny is earning every week, since there are no expenses that are removing money from his account. In this case, it would be the $150 that he is putting into the account weekly.</span>
6 0
3 years ago
Ellie has 9 weeks to finish an 11 part project. How many parts does Ellie have to do each week?
netineya [11]
11 divided by 9 is 1.2 repeating so Ellie will have to do about 1.3 parts a week
5 0
3 years ago
.<br> Evaluate the series 1 + 0.1 + 0.01 + . . .
EastWind [94]

We can employ a simple repeated decimal trick:

x=1.111\ldots

0.1x=0.111\ldots

\implies x-0.1x=1\implies0.9x=1\implies x=\dfrac1{0.9}=\dfrac{10}9

###

Alternatively, we can compute the partial sum of the series.

\displaystyle S_n=\sum_{k=0}^n\dfrac1{10^k}

S_n=1+0.1+0.01+\cdots+\dfrac1{10^n}

0.1S_n=0.1+0.01+0.001+\cdots+\dfrac1{10^{n+1}}

\implies S_n-0.1S_n=0.9S_n=1-\dfrac1{10^{n+1}}

\implies S_n=\dfrac{10}9-\dfrac9{10^n}

As n\to\infty, the second term vanishes and we're left with \dfrac{10}9. Notice that this is really just a more formal version of the earlier trick.

6 0
3 years ago
Read 2 more answers
At a slumber party, 1/3 of the girls painted their fingernails. Out of those girls, 1/6 of them chose red as their nail polish c
Leni [432]
1/18 because 1/6 of 1/3 of the girls painted their nail red and 1/6 of 1/3 is 1/6*1/3 or 1/18.
6 0
3 years ago
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