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inn [45]
3 years ago
12

Solve the system of linear equations.

Mathematics
1 answer:
irina [24]3 years ago
5 0

Answer:

(3,6)

Step-by-step explanation:

-(6x+2y=30)

x+2y=15

-6x-2y=-30

x +2y=15

-5x=-15

x=3

3+2y=15

2y=12

y=6

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Less than 75% of workers got their job through internet resume sites. A researcher thinks it has increased.
Vera_Pavlovna [14]

Answer:

H0 : p = 0.75  against    H1: p > 0.75  One tailed test.

Step-by-step explanation:

We state our null and alternative hypotheses as

H0 : p = 0.75  against    H1: p > 0.75  One tailed test.

In this case H0 is not defined as p≤ 0.75 because the acceptance and rejection regions cannot be set up. Therefore we take the exact value of H0 : p= 0.75.

The claim is that the probability of the workers getting their job through the internet is greater than 75% or 0.75.

As H0 is supposed to be less than we choose H1 to be greater than equality.

5 0
3 years ago
Consider the parent quadratic function f(x) = x2.
zloy xaker [14]
F(x)=x+c, where c is an arbitrary constant.
if c is positive then translation above 
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f(x)=-x^2
5 0
3 years ago
Assume that the probability that a baseball player will get a hit in any one at bat is 0.250. What is the probability that he wi
Yanka [14]

Answer: 0.0791

Step-by-step explanation:

Given : The probability that a baseball player will get a hit in any one at bat is 0.250.

Let x be the first hit.

According to the geometric probability , the probability that x (th) trial is the first success =P(X=x)=(1-p)^{x-1}p , where p is the probability of getting success in each trial.

As per given p= 0.250

Then, the probability that he will get his first hit on his 5th at bat will be :

P(X=x)=(1-0.25)^{5-1}(0.25)\\\\=(0.75)^4(0.25)\\\\=0.0791015625\approx0.0791

Hence, the probability that he will get his first hit on his 5th at bat is 0.0791 .

7 0
3 years ago
Harold makes and sells wooden clocks. His profit depends on what price he charges for a clock.
love history [14]

Answer: Harold must not charge more than X=30 per clock

Step-by-step explanation:

Based on Harold's profit equation, charging more than X=30 means Harold will have a profit of zero or a negative profit. therefore the price of a clock should range between 9 and 30

8 0
3 years ago
Norma Jean makes $25 per hour. She works 35 hours per week. She get a commission of 15% on her total sales. How much should Norm
Alex

Answer:$24167

Step-by-step explanation: Without commission Norma makes $875 a week. Subtract that from 4500 to get 3625 you then divide that by .15 to get the amount needed to sell which is $24167

8 0
2 years ago
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