3 years ago

PLZ HELP I GIVE BRAINLIEST!!! (Plz show work)

Mathematics

1 answer:

Triss [41]3 years ago

3 0

Answer:

800 × ( 3.87 ÷ 100 ) × 1

= 30.96

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(x+a)^2 -7 = x^2 +10x +b<br><br> Work out the value of a and b.

Gekata [30.6K]

Answer:

(x+a)²-7=x²+10x+b

simplifying,we get

x²+2ax+a²-7=x²+10x+b

the coefficient of x on both sides should be equal

therefore

2a=10

a=10/2=5

also for b

a²-7=b

5²-7=25-7=b

b=18

a=5

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3 years ago

Capital Value An investment produces a perpetual stream of income with a flow rate of

Elodia [21]

Answer:

$30,000

Step-by-step explanation:

The capital value is given by

$\int_{0}^{\infty} R(t) e^{-r t} dt$

where R(t) is annual rate

r - annual rate of interest

capital value $= \int_{0}^{\infty} 1200 e^{0.03t} e^{-0.07 t} dt$

= lim at b tend to infinity $\int_{0}^{b} 1200 e^{0.03t} dt$

=lim at b tend to infinity $\left [ \frac{1200}{-0.04} e^{-0.04 t} \right ]_0^b$

-30,000 { lim at b tend to inifinity $(e^{-0.04 b) = e^0]$

As $b\rightarrow \infty, e^{-0.04 b} \rightarrow 0$

$\int_{0}^{\infty} 1200 e^{0.03t} e^{-0.07 t} dt = -30,000(0 -1) =$30,000$

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4 years ago

Simplify 2x - 8x - 6y + 9 -14 + x + 11y.

raketka [301]

We can see that 2x - 8x + x = -5x
and -6y + 11y = 5y
and 9 - 14 = -5
so simplified, it is -5x + 5y - 5

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3 years ago

Read 2 more answers

a road sign is in the shape of a regular pentagon what is the measure of each angel on the sign round to the nearest tenth

yaroslaw [1]

Answer:

Each angle is equal to 108 degrees. The internal angles of a pentagon add up to 540.

No matter what the side lengths are, so long as it is a regular pentagon, each angle will always be exactly 108 degrees.

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4 years ago

Find the perimeter of a rectangle whose length is 150 m and the diagonal is 170 m work

hram777 [196]

P=2l+2w
150(2)+170(2)
300+340
640 m

7 0

3 years ago