3 years ago

If r + t = 10 and -r + t = 4, What is the value of 5r + 8t?

Mathematics

1 answer:

ikadub [295]3 years ago

7 0

Answer:

Step-by-step explanation:

Start solving using simultaneous equation,From there, we have r to be 3 and t to be 7

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Step-by-step explanation:

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3 years ago

Suppose f(x) = x2 and g(x) = (3x)2. Which statement best compares the graph

Ksenya-84 [330]

Answer:

Step-by-step explanation:

Please use " ^ " to indicate exponentiation: f(x) = x^2 and g(x) = (3x)^2.

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The maybe pay life insurance co. is trying to sell you an investment policy that will pay you and your heirs $39,000 per year fo

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3 years ago

Read 2 more answers

What is the present value of $3,000 per year for 9 years discounted back to the present at 10 percent?

Studentka2010 [4]

Answer:

$17,277.07

Step-by-step explanation:

Present value of annuity is the present worth of cash flow that is to be received in the future, if future value is known, rate of interest is r and time is n then PV of annuity is

PV of annuity = $\frac{P[1-(1+r)^{-n}]}{r}$

= $\frac{3000[1-(1+0.10)^{-9}]}{0.10}$

= $\frac{3000[1-(1.10)^{-9}]}{0.10}$

= $\frac{3000[1-0.4240976184]}{0.10}$

= $\frac{3000(0.5759023816)}{0.10}$

= $\frac{1,727.7071448}{0.10}$

= 17,277.071448 ≈ $17,277.07

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3 years ago

What is h(-2)<br> H(-1.75)<br> H(1)

ruslelena [56]

$h(x)=\left\{\begin{array}{cccc}-2&if&-2\leq x$

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