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4 years ago

PLEASE HELP ASAP WILL GET BRAINLIEST!!!!

Mathematics

2 answers:

zloy xaker [14]4 years ago

7 0

Answer:

Step-by-step explanation:

because it's subtracting the xaxis by -2 so subtracting it will cause the linear equations to shift left by 2 untis

marissa [1.9K]4 years ago

3 0

Answer:

A.The graph of y=f(x) will shift left 2 units.

Step-by-step explanation:

We are given that a function

$y=f(x)$

The graph y=f(x) is replacing by y=f(x-2)

We have ton find a statement that describes the best effect of replacing the graph of y=f(x) with the graph of y=f(x-2).

x is replace by x-2

It means x shift 2 units towards left side.

Suppose, $y_1=x$

$y_2=x-2$

x=1

Then, $y_1=1$

$y_2=1-2=-1$

Therefore, f(x) will shift left 2 units to obtain y=f(x-2) .

Answer:A.The graph of y=f(x) will shift left 2 units.

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Damon measured his bedroom and the length measured 5.6 meters. Given that I meter = 3.28 feet, what is the length of Damon's roo

Elina [12.6K]

Answer:

D) 18.37 feet

Step-by-step explanation:

5.6 x 3.28 = 18.37 feet

6 0

3 years ago

What's the answer to:<br> ‎X + 9 = 18 - 2x?

ser-zykov [4K]

Remember you can do anything to an equation as long as you do it to both sides

x+9=18-2x
add 2x to both sides
2x+x+9=18+2x-2x
3x+9=18+0
3x+9=18
minus 9 both sides
3x+9-9=18-9
3x+0=9
3x=9
divide both sides by 3
(3x)/3=9/3
(3/3)x=3
1x=3
x=3

4 0

4 years ago

A survey report states that 70% of adult women visit their doctors for a physical examination at least once in two years. If 20

irakobra [83]

Answer:

a) 0.3921 = 39.21% probability that fewer than 14 of them have had a physical examination in the past two years.

b) 0.107 = 10.7% probability that at least 17 of them have had a physical examination in the past two years.

Step-by-step explanation:

For each women, there are only two possible outcomes. Either they visit their doctors for a physical examination at least once in two years, or they do not. The probability of a woman visiting their doctor at least once in this period is independent of any other women. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

70% of adult women visit their doctors for a physical examination at least once in two years.

This means that $p = 0.7$

20 adult women

This means that $n = 20$

(a) Fewer than 14 of them have had a physical examination in the past two years.

This is:

$P(X < 14) = 1 - P(X \geq 14)$

In which

$P(X \geq 14) = P(X = 14) + P(X = 15) + P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) + P(X = 20)$

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 14) = C_{20,14}.(0.7)^{14}.(0.3)^{6} = 0.1916$

$P(X = 15) = C_{20,15}.(0.7)^{15}.(0.3)^{5} = 0.1789$

$P(X = 16) = C_{20,16}.(0.7)^{16}.(0.3)^{4} = 0.1304$

$P(X = 17) = C_{20,14}.(0.7)^{17}.(0.3)^{3} = 0.0716$

$P(X = 18) = C_{20,18}.(0.7)^{18}.(0.3)^{2} = 0.0278$

$P(X = 19) = C_{20,19}.(0.7)^{19}.(0.3)^{1} = 0.0068$

$P(X = 20) = C_{20,20}.(0.7)^{20}.(0.3)^{0} = 0.0008$

$P(X \geq 14) = P(X = 14) + P(X = 15) + P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) + P(X = 20) = 0.1916 + 0.1789 + 0.1304 + 0.0716 + 0.0278 + 0.0068 + 0.0008 = 0.6079$