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2 years ago

For the annual rate of change of -31% find the corresponding growth or decay factor

1 answer:

3 0

Firstly, the negative sign indictaes that this is a decay. Secondly, it is decaying by 31% (or 31 per 100) per annum, or 0.31, however, I dont think any of these answers are right. certainly C and D represent growth as they are 131% and 169% (1.31 and 1.69 respectively), B represents a decrease of 4% or 0.04, and A represents a decrease of 87% or 0.87, which as you can see does not correspond to to a decrease of -0.31or -31%, are you sure you have supplied all the information in the question(such as a starting point). If you have then I would refer to teacher/tutor for further examination.

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Which of the following completes the proof? Triangles ABC and EDC are formed from segments BD and AC, in which point C is betwee

kotykmax [81]

Answer: ∠ACB ≅ ∠E'C'D'; translate point D' to point B

Step-by-step explanation:

That is just my best guess.

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2 years ago

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naveed makes 6.5litres of soup,correst to the nearest 0.5 litre he serves portions of his soup in 330ml cups correct to the near

Karolina [17]

Answer:

Number of Cups = 19

Step-by-step explanation:

Given

Size of Soup = 6.5 litres

SIze of cup = 330 ml

Required

Number of Cups.

First, it'll be assumed that the size of cups are uniform (the same).

The number of cups needed is calculated by dividing the size of soup by the size of the cup;

Number of Cup = Size of Soup/Size of Cup

Number of Cup = 6.5 litres/ 330 ml

Convert units;

1 litres = 1000 ml

So,

6.5 litres = 6.5 * 1,000 ml

6.5 litres = 6,500 ml

So,

Number of Cups = 6500 ml/330 ml

Number of Cups = 19.696969697

From the solution above, Naveed will definitely be able to serve 19 cups. The remaining fractional part won't fill a cup;

Hence, Number of Cups = 19

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2 years ago

At what rate would you need to invest $12000 and make $2880 after 8 years?

lora16 [44]

Answer:

$3\%$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=8\ years\\ P=\$12,000\\I=\$2,880\\r=?$

substitute in the formula above

$2,880=12,000(8r)$

Solve for t

$2,880=96,000(r)$

$r=2,880/96,000$

$r=0.03$

Convert to percent form

$0.03*100=3\%$

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2 years ago

Damian found that 75% of the total number of teenagers surveyed like pop music. If 150 teenagers like pop music, what is the tot

igor_vitrenko [27]

Okay. To find the number of teens he surveyed, we can write and solve a proportion. Set it up like this: 150/x = 75/100. This is because you’re looking for the amount of students he surveyed and you know the percentage and the number of students that like pop music. 150 is over “x”, because “x” will represent the total number of students surveyed. Now, let’s cross multiply the values. 150 * 100 is 15,000. 75 * x = 75x. 15,000 = 75x. Now, divide each side by 75 to isolate the “x”. 15,000/75 is 200. x = 200. Damian surveyed a total of 200 teenagers.

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2 years ago

The sum of two positive integers, x and y, is not more than 40. The difference of the two integers is at least 20. Chaneece choo

MaRussiya [10]

Chaneece found the correct solution.

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2 years ago

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