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11111nata11111 [884]
3 years ago
13

The supplement of angle b is 5 times the measure of angle b

Mathematics
1 answer:
AfilCa [17]3 years ago
4 0
5b + b = 180
6b = 180
b= 30
5b=150

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Natural selection acts by taking advantage of natural variations in the traits of organisms within a population. The ultimate so
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The answer is the mutations within the genetic code.

Step-by-step explanation:

Natural selection is one of the basic mechanisms of evolution by which species adapt to their environment in order to increase their chance of survival and reproduction. In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. But, the sources of this genotype variations are not changes in the environment, nor response to the stress, but the mutations in the genome of the organism. If a mutation is not lethal, it could remain in the population, increasing the variation is some traits.


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3 years ago
What is 7/8 in decimal form
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The answer is 0.875..
8 0
3 years ago
Twice the sum of a number and 3 times a second number is 4. The difference of ten times the seco
34kurt

Two numbers that gives twice the sum of a number and 3 times a second number is 4. The difference of ten times the second number and five times the first is 90 are -10  and 4

Given :

Twice the sum of a number and 3 times a second number is 4. The difference of ten times the second number and five times the first is 90.

Let a  and b be the two  unknown numbers

Lets frame equation using the given statements

Twice the sum of a number and 3 times a second number is 4.

2(a+3b)=4\\a+3b=2

the difference of ten times the second number and five times the first is 90

10b -5a=90\\Divide \; by \;5 \\2b-a=18

Now use these two equations to solve a  and b

a+3b=2\\-a+2b=18

Add both the equations

a+3b=2\\-a+2b=18\\--------------------------\\5b=20\\b=4

Now find out 'a'

a+3b=2\\a+3(4)=2\\a+12=2\\a=2-12\\a=-10

The two numbers are -10  and 4

Learn more :  brainly.com/question/13856304

4 0
3 years ago
A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the l
lesya692 [45]

Answer:

The probability that a call last between 4.2 and 4.9 minutes is 0.4599

Step-by-step explanation:

Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula

W = \frac{X-\mu}{\sigma} = \frac{X-4.2}{0.4}

We will use \phi , the cummulative distribution function of W. The values of \phi are well known and the can be found in the attached file

P(4.2 < X < 4.9) = P(\frac{4.2-4.2}{0.4} < \frac{X-4.2}{0.4} < \frac{4.9-4.2}{0.4}) = P(0 < W < 1.75) = \\ \phi(1.75) - \phi(0) = 0.9599-0.5 = 0.4599

We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599

Download pdf
7 0
3 years ago
Jeffery earned $65 doing yard work. He bought a pair of jeans for $31.25 and a sweat shirt for $16.50. He set aside the money le
erastova [34]

Answer:

Step-by-step explanation:

65.00 - 31.25 - 16.50 = $17.25

4 0
3 years ago
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