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3 years ago

15

Cory is a bird watcher he estimates that 30% of the birds he sees are american robins, 20% are dark eyed juncos and 20% are slnc

sparrows. he designs a simulation.

2 answers:

dezoksy [38]3 years ago

8 0

Answer:

I think C. 0.75

Step-by-step explanation:

OleMash [197]3 years ago

8 0

Answer:

0.7

Step-by-step explanation:

a p e x :))

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Write a problem that can be solved by using equal groups

kap26 [50]

5+5
=10
2 groups of 5

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4 years ago

Michael borrows money from his uncle, who is charging him simple interest using the formula I = PRT. To figure out what the inte

katen-ka-za [31]

Answer:

c

Step-by-step explanation:

formula l=PRT

bring PT to right side we get

l/PT = R

or

R=l/PT

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3 years ago

Mr. Simpson spent five hours working on his lawn if you spent 25% of the time edging the flowerbeds how much time did he spend e

cricket20 [7]

He spend one hour and twenty five minutes (1:25)

5 0

3 years ago

A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has i

bija089 [108]

Answer: $\bold{a)\ P(t)=P_o\cdot e^{t\cdot ln(2.7)}}$

b) 5314

c) ln 2.7

d) 4.6 hrs

<u>Step-by-step explanation:</u>

$P(t) = P_o\cdot e^{kt}\\\\\bullet \text{P(t) is the number of bacteria after t hours} \\\bullet P_o\text{ is the initial number of bacteria}\\\bullet \text{k is the rate of growth}\\\bullet \text{t is the time (in hours)}\\\\\\270=100\cdot e^{k(1)}\\2.7=e^k\\ln\ 2.7=\ln e^k\\\boxed{ln\ 2.7=k}\\\\\text{So the equation to find the number of bacteria is: }\boxed{P(t)=P_o\cdot e^{t\cdot ln(2.7)}}\\\\\\P(4)=100\cdot e^{4\cdot ln(2.7)}\\.\qquad =\boxed{5314}$

$10,000=100\cdot e^{t\cdot ln(2.7)}\\100=e^{t\cdot ln(2.7)}\\ln\ 100=ln\ e^{t\cdot ln(2.7)}\\ln\ 100=t\cdot ln(2.7)\\\dfrac{ln\ 100}{ln\ 2.7}=t\\\\\boxed{4.6=t}$

4 0

3 years ago

lord [1]

Answer:

y +2 = 4(x -3)

Step-by-step explanation:

Point-slope form of the equation of a line with slope m through point (h, k) is ...

y -k = m(x -h)

For m = 4 and (h, k) = (3, -2), the equation is ...

y +2 = 4(x -3) . . . . . matches the first choice

3 0

3 years ago