MATHEMATICS MIDDLE SCHOOL

The number of dogs in a city is declining at a rate of about .08% eachyear. If there were 3500 cats to begin with, how many will there be in 10
years?

Answers

Answer 1
Answer:

Answer:

There will be 3472 cats in 10 years

Step-by-step explanation:

There were 3500 cats

The number of dogs in a city is declining at a rate of about 0.08% each  year.

We are supposed to find the no. of cats in 10 years

Formula :N(t)=N_0(1-r)^t

Where N(t) = Remaining cats after t days

N_0 = Initial population

r = rate of depreciation

t=time

So, No. of cats remained after 10 years = 3500(1-(0.08)/(100))^(10)=3472.100

Hence There will be 3472 cats in 10 years

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Greatest common factor of 21, 35, 49

Which equation does the graph below represent?
y=1/3+x
y=1/3x
y=3+x
y=3x

Answers

Lets find 2 points, one obvious one is (0,0), another point is (12,4)

Slope = (4-0)/(12-0) =(4)/(12) = (4* 1)/(4* 3) = (1)/(3)

y = mx + b

m is the slope

we got m = 1/3

We can eliminate answer choices C and D.

y = 1/3x + b

we need to solve for b

Plug in the point (0,0) and solve for b

0 = 1/3(0) + b

0 = 0 + b

b = 0

The equation of the line is y = 1/3x + 0, or y = 1/3x

Your answer is B.

State whether the lines in each pair are parallel. explain.
a) y=3x+4 y=—3x+4

Answers

Answer:

They are not parallel. they would have to have the same slope to be parallel.

Step-by-step explanation:

12b−15>21?? How is this done? Need help ASAP

Answers

12b-15>21
+15 +15

12b > 36
----- ----
12 12

b = 3
12b - 15 > 21

12b > 21 + 15

12b > 36

b > 3

What is 30x52??????????​

Answers

Answer:

1560

Step-by-step explanation:

30x50=1500

30x2=60

1500+60=1560

Answer: 1,560

Step-by-step explanation:

Did the algorithm

(ﾉﾟ0ﾟ)ﾉ→1560

Janelle can get a 24-pack of bottled water for $6.80. How much would Janelle have to pay for a 12-pack of bottled water if the ratios are proportional?

Answers

She would have to pay $3.40 I think. A 12-pack is half the size of a 24-pack so I did half the price. 

Answer: $3.40. I think this is the answer

Measure and draw to show a blue crayon and a green crayon that is about 1 paper clip longer.

Answers

Well this a problem where you just draw a cray that is about 1 paperclip longer than the other. 
The length of a paperclip might be about as long as your thumb if that helps!
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PLEASE HELP I GIVE THANKS