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3 years ago

Alexandra has $15 to buy drinks for her friends at the baseball game. Soda

Mathematics

1 answer:

EleoNora [17]3 years ago

6 0

Answer:

Step-by-step explanation:

write an equation for the costs:

if x is the number of sodas

and y is the number of waters

2.75x + 2y <= 15

(<= is less than or equal to)

if we substitute 3 for y

we get 2.75x + 2(3) <= 15

2.75x + 6 <= 15

2.75x <= 9

9 / 2.75 = 3.2727

however, you cannot buy part of a soda

so, round to 3

you also cannot buy negative sodas

so, the answer is C

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The population of deer forest is currently 800 individuals. Scientists predict that this population will grow at a rate of 20 pe

jonny [76]

Answer:

C. 3.8 years

Step-by-step explanation:

Exponential Growth

The natural growth of some magnitudes can be modeled by the equation:

$P(t)=P_o(1+r)^t$

Where P is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.

The actual population of deer in a forest is Po=800 individuals. It's been predicted the population will grow at a rate of 20% per year (r=0.2).

We have enough information to write the exponential model:

$P(t)=800(1+0.2)^t$

$P(t)=800(1.2)^t$

It's required to find the number of years required for the population of deers to double, that is, P = 2*Po = 1600. We need to solve for t:

$800(1.2)^t=1600$

Dividing by 800:

$(1.2)^t=1600/800=2$

Taking logarithms:

$t\log 1.2=\log 2$

Dividing by log 1.2:

$t=\frac{\log 2}{ \log 1.2}$

Calculating:

t = 3.8 years

Answer: C. 3.8 years

6 0

3 years ago

Please help if can thank you :)

Evgesh-ka [11]

2*(1/2*8 inches*4 inches)+10 inches*4 inches

4 0

4 years ago

3,650,000 = How to write this in scientific notation form

Ad libitum [116K]

Answer:

3.65E6

Step-by-step explanation:

3,650,000=3.65*10^6

which is equivalent to 3.65E6

E6 means 10 raised to the power 6.

Any number after E(negative or positive) in such notation means 10 raised to the power the given number.

3 0

3 years ago

Read 2 more answers

Which value makes the inequality true?

gizmo_the_mogwai [7]

Have you done it cause I also need help???

7 0

2 years ago

Please help me!!!!!!!!!!!!!! 20 POINTS

Katarina [22]

Answer:

The Area of the Grass is 18 square meters.

Step-by-step explanation:

Find the area of the grass and sand (5*6). The area of the grass and sand is 30.

Next, find the area of just the sand (3*4). The area of the sand is 12.

Subtract the area of the sand (12) from the area of the grass and sand (30).

30-12 = 18

8 0

2 years ago