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3 years ago

Find (g o f)(-1). *

Mathematics

1 answer:

klio [65]3 years ago

6 0

Answer:

D -9

Step-by-step explanation:

(g o f)(-1) = g(f(-1))

f(-1) = $f(-1) = (-1)^{2} + 2(-1) - 3\\= 1 - 2 - 3\\= -4$

g(-4) = -4 - 5 = -9

So, (g o f)(-1) = -9

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£2200 is deposited in a bank paying 0.5% simple interest per annum. How much interest will have been paid after 18 years?

seraphim [82]

Answer:

The answer would be £198

principal (p) = 2200

Rate (R) = 0.5%

Time (T) = 18

Interest(I) = ?

Now,

or, Interest. = P×T×R/100

or, Interest = 2200×18×0.5/100

or, Interest = 19800/100

Hence, Interest = 198

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3 years ago

You have 192 grams of a radioactive kind of iodine. How much will be left

m_a_m_a [10]

Answer:

192/2= 96 g after 7h

96/2=48 g after 14h

48/2= 24 g after 21h

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3 years ago

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The 3rd one
You can factor 3 out of each term in the numerator. And then divide it by the 3 in the denominator.

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3 years ago

Read 2 more answers

Write your answer as a fraction or whole number.

RideAnS [48]

Answer:

3/6 which reduces to 1/3

Step-by-step explanation:

you have three chances of getting a braclet our of 6 total chances of prize

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3 years ago

PLEASE HELP!!!

allsm [11]

Answer/Step-by-step explanation:

Part A: Net A is the correct net. If we decide to fold the net, we'd get the shape of the prism. Folding back net B won't give us the shape of the prism because of the position and arrangement of the right triangular bases.

Part B:

AB = 3in

BC = 5 in

CD = 9.4 in

Part C: surface area of the prism can be calculated by calculating the area of each part of the net, and summing them together as follows,

Area of the 2 triangular bases = 2(½*base*height of triangle) = 2(½*4*3) = 2*2*3 = 12 in²

Area of the three rectangles =

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Surface area of prism = 12 + 112.8 = 124.8 in²

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3 years ago