3 years ago

What is the value of the smaller zero of the function defined by 2x2 + 9x + 7?

1 answer:

3 0

Answer:

We can factor the quadratic function into (2x + 7)(x + 1) and this way, the terms sum to 2x^2 + 9x + 7. Looking at the 2 factors 2x+7 and x+1, the way to find the zeros is to set both of these expressions equal to 0. Therefore we have: 2x+7=0

Step-by-step explanation:

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The graph of $h(t) = 400 - 39t - 157e^{ \frac{t}{4} }$ is attached.

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3 years ago

Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

Oxana [17]

Answer:

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Step-by-step explanation:

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SSSSS [86.1K]

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Read 2 more answers

Ben earns an annual income of $12,800 a year. The income tax he has to pay is 15%. What is the amount of income tax in dollars a

Alex17521 [72]

Find 15% of 12,800,

$\frac{15}{100}$ × $\frac{12,800}{1}$

= 1,920

8 0

3 years ago

Melanie invested $9,800 in an account paying an interest rate of 4.5 compounded quarterly. Amelia invested $9,800 in an account

Zolol [24]

Answer:

$13,082.60 more

Step-by-step explanation:

Melanie:

$A=P(1+\frac{r}{n})^(20)\\ A=9800(1+\frac{.045}{4})^(20)\\A=$12,257.36$

Amelia:

$A=Pe^(rt)\\A=9800e^(.0475*20)\\A=$25,339.95$

Amelia-Melanie= $13,082.60

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3 years ago