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3 years ago

Let f(x)=x^2-2x-4

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

4 0

F(-1)=1-2=-1
f(4)=16-8-4=4
A(x)=f(4)-f(-1)/4-(-1)
A(x)=4-1/4+1=3/5

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Jarvis invested some money at 6% interest. Jarvis also invested $58 more than 3 times that amount at 9%. How much is invested at

DerKrebs [107]

9514 1404 393

Answer:

$3309 at 6%
$9985 at 9%

Step-by-step explanation:

Let x and y represent amounts invested at 6% and 9%, respectively.

y = 3x +58 . . . . . . . the amount invested at 9%

0.06x +0.09y = 1097.19 . . . . . . total interest earned

Substituting for y, we have ...

0.06x +0.09(3x +58) = 1097.19

0.33x + 5.22 = 1097.19 . . . . . . . . . simplify

0.33x = 1091.97 . . . . . . . . . . . . subtract 5.22

x = 3309 . . . . . . . . . . . . . . . . divide by 0.33

y = 3(3309) +58 = 9985

$3309 is invested at 6%; $9985 is invested at 9%.

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3 years ago

I am 1,000 times as big as a gram what am i

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Answer:

One Kilogram

Step-by-step explanation:

1kg = 1000g

8 0

2 years ago

Read 2 more answers

mary works for a commission of 12% on all goods she sell for the month if her basic salary is 3000 per month and she sells $2500

SOVA2 [1]

Answer:

3300

Step-by-step explanation:

Formula

Gross Salary = Basic + Commission

Givens

Basic = 3000

% = 12%

Solution

Gross = 3000 + 12/100 * 2500

Gross = 3000 + 30000/100

Gross = 3000 + 300

Gross = 3300

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3 years ago

when a coin is flipped n times,what is the probability that the first head comes after exactly m tails

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Answer:

the probability of flipping n times is 12n, since that's the probability of flipping exactly n−1 tails followed by 1 heads.

Step-by-step explanation:

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Step-by-step explanation:

I did this a while ago. I hope that I helped<3

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