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3 years ago

What are the answers

Mathematics

1 answer:

kotykmax [81]3 years ago

7 0

1.) 1/3 & 4/12
2.) 2/5 & 8/20
3.) 6/16 & 9/24
4.) 6/10 & 9/15

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There were 624 envelopes to be sorted into 8 different mail bags. if the same number of envelopes will be in each bag how many e

pickupchik [31]

Answer:

I think it is 710

Step-by-step explanation:

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4 years ago

What is the slope of the line shown in the graph?

faust18 [17]

Answer:

-1 over 2

Step-by-step explanation:

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3 years ago

Read 2 more answers

: A new bear population that begins with 150 bears in 2000 decreases at a rate of 20% per year.

d1i1m1o1n [39]

Answer:

2 bears in 2020.

Step-by-step explanation:

We have been given that a new bear population that begins with 150 bears in 2000 decreases at a rate of 20% per year.

We will use exponential decay formula to solve our given problem as:

$y=a\cdot (1-r)^x$ , where,

y = Final quantity,

a = Initial value,

r = Decay rate in decimal form,

x = Time

$20\%=\frac{20}{100}=0.20$

Upon substituting our given values in above formula, we will get:

$y=150(1-0.20)^x$

$y=150(0.80)^x$ , where x corresponds to year 2000.

To find the population in 2020, we will substitute $x=20$ in our equation as:

$y=150(0.80)^{20}$

$y=150(0.011529215046)$

$y=1.7293822569$

$y\approx 2$

Therefore, 2 bears are there predicted to be in 2020.

Since population is decreasing so population is best described as exponential decay.

8 0

3 years ago

Need help with this question! :)

dimaraw [331]

Answer:

13 i think

Step-by-step explanation:

3 0

3 years ago

A rectangular lawn has an area of 140 square yards. Its width is 6 yards less

Katarina [22]

Answer:

length : 10 yard

width: 14 yard

Step-by-step explanation:

Let l be the length of the yard.

Since the width is 6 yards less than twice its length, we can say the width is 2l-6.

With width x length=area,

l (2l -6) = 140

2l^2 - 6l = 140

2l^2 - 6l - 140 = 0

Using the quadratic formula,

we can determine l = 10 or -7

since the length should not be negative,

the length is 10 yard.

Now substitute l=10 into 2l-6.

width = 2(10)-6

= 14 yard

6 0

3 years ago