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Ket [755]
3 years ago
13

What quadratic equation has -4 and 2/3 as it’s roots

Mathematics
1 answer:
umka21 [38]3 years ago
5 0

Answer:

3x^2 + 10x - 8 = 0.

Step-by-step explanation:

In factor form it would be:

(x + 4)(3x - 2) = 0  (because x + 4 = 0 gives x = -4 and 3x - 2 = 0 gives x = 2/3);

Now change to standard form:

= 3x^2 - 2x + 12x - 8 =0

= 3x^2 + 10x - 8 = 0.

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Cindy Lou deposited $85 in the bank earning 4.5% interest annually. About how many years will it take her to earn $11.48 in inte
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Answer:

3.00 years

Step-by-step explanation:

Cindy Lou deposited $85 in the bank earning 4.5% interest annually. About how many years will it take her to earn $11.48 in interest?

Your answer

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Principal= $85

Rate= 4.5%

Intterest=  $11.48

The simple interest formula is

SI= PRT/100

11.48= 85*4.5*T/100

cross multiply

11.48*100= 85*4.5*T

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divide both sides by 382.5

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