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givi [52]
2 years ago
13

In a year, there are 4 months that have 30 days.

Mathematics
1 answer:
docker41 [41]2 years ago
5 0

The ratio of the months with 30 days to the months with other than 30 days is 4 : 7.

<h3>Definition of ratio </h3>

Ratio expresses the relationship between two or more numbers. It shows the frequency of the number of times that one value is contained within other value(s).

<h3>The ratio of the months with 30 days to the months with other than 30 days</h3>

There are 4 months that have 30 days and 1 month that has 28 days. The months with more than 31 days is 7 months.

The ratio is 4 : 7.

To learn more about ratios, please check: brainly.com/question/25927869

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Irina18 [472]

Hello,

f^{-1}(-3)=-1\\

You have just to read the arrows un reversed order:

in f we find (-1,-3)  so in f^{-1} we find (-1,-3)^{-1}=(-3,-1)

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3 years ago
Which type of transformation is the only one of the four that is not a rigid motion and other words which type of transformation
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Step-by-step explanation:

Dilation changes the size of the shape and is not a rigid motion.

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VLD [36.1K]

Answer:

8.4 * 10^6

Step-by-step explanation:

8.4 * 10^6

1 million = 1 * 10^6

8 million 4 hundred thousand is 8.4 * 10^4 because this number is 8.4 times bigger than a million.

6 0
3 years ago
A culture started with 1,500 bacteria. After 5 hours it grew to 2,300 bacteria. How many bacteria with be present after 12 hours
Fynjy0 [20]

Answer:

4185

Step-by-step explanation:

A culture of bacteria grows exponentially according to the following general exponential growth function;

P_{t}=P_{0}e^{kt}

where;

p(t) is the population at any given time t.

p(0) is the initial population

k is the growth constant

From the information given we have;

p(0) = 1500

at t = 5, p(t) = 2300; p(5) = 2300

We shall use this information to determine the value of k;

2300=1500e^{5k}

Divide both sides by 1500;

\frac{23}{15}=e^{5k}\\\\ln(\frac{23}{15})=5k\\\\k=0.08549

Therefore, the population of the bacteria at any time t is given by;

P_{t}=1500e^{0.08549t}\\\\P(12)=1500e^{0.08549(12)}=4184.3

8 0
3 years ago
Combine Like Terms:
IgorLugansk [536]
1. 8a the answer is 8a


8 0
3 years ago
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