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iragen [17]
3 years ago
10

If you wanted to shift the graph of y = 2x + 5 up, which equation could you

Mathematics
2 answers:
S_A_V [24]3 years ago
8 0

Answer: the answer is

A. y=2x+9

mart [117]3 years ago
6 0

Answer:

. y=2x+9

Step-by-step explanation:

You might be interested in
The mean age when smokers first start is 13 years old with a population standard deviation of 2 years. A researcher thinks that
lakkis [162]

Answer:

Null hypothesis:\mu = 13  

Alternative hypothesis:\mu \neq 13

z=\frac{12.2-13}{\frac{2}{\sqrt{30}}}=-2.191  

a. Reject the null hypothesis

c. There is enough evidence to support the claim

Step-by-step explanation:

Data given and notation  

\bar X=12/2 represent the sample mean  

s=20000 represent the standard deviation for the sample  

\sigma =2 represent the population standard deviation

n=30 sample size  

\mu_o =13 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the smoking age has significantly changed since the invention of ENDS—electronic nicotine delivery systems, the system of hypothesis would be:  

Null hypothesis:\mu = 13  

Alternative hypothesis:\mu \neq 13

Compute the test statistic

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can replace in formula (1) the info given like this:  

z=\frac{12.2-13}{\frac{2}{\sqrt{30}}}=-2.191  

What do you conclude? Using the p-value approach  

Since is a two tailed test the p value would be:  

p_v =2*P(Z  

Since the p_v then the correct decision is:

a. Reject the null hypothesis

And the best conclusion is :

c. There is enough evidence to support the claim

6 0
3 years ago
AB and CD are straight line segments.
goldfiish [28.3K]

Answer:

<h3>i) Angle AOC is 95° </h3><h3>Reason:- Angle AOC is equal to Angle DOB since they are Vertically Opposite Angles. </h3>

<h3> ii) Angle BOC is 85° </h3><h3>Reason:- Angle AOC + Angle BOC - 180° (they lie in a straight line so they are a linear pair. Sum of the angles will be 180°) </h3><h3> Angle AOC is 95°, So:- </h3><h3> 95° + Angle BOC = 180° </h3><h3> Angle BOC= 180° - 95° </h3><h3> Angle BOC = 85° </h3><h3> </h3><h3>iii) Angle DOE is 17° </h3><h3>Reason:- Angle AOE+ Angle DOE+ Angle DOB = 180° (they lie in a straight line so they're a linear pair. Sum of the angles will be 180°) </h3><h3> So, </h3><h3> 68° + Angle DOE+ 95° = 180° </h3><h3> 163° + Angle DOE = 180° </h3><h3> Angle DOE= 180° - 163° </h3><h3> Angle DOE is 17°</h3>
5 0
3 years ago
The ice cream man just ended his shift for the day. Let 1/2x^2 6/11x + 8 represent the amount of chocolate ice cream bars he sol
saveliy_v [14]

Answer:

A and D

Step-by-step explanation:

Total ice cream bars sold = sum of chocolate sold , vanilla and strawberry ice-creams sold.

=(1/2)x2 + (6/11)x + 8 + (5/9)x2 + (2/3) +(1/3)x2 + 4x +(4/3) (Given in the question)

=(25/18)x2 + (50/11)x + 10 (Adding terms corresponding to x2,x ,constant respectively)

Difference in chocolate and strawberry bars =[ (1/2)x2 + (6/11)x + 8] - [(1/3)x2 + 4x +(4/3)]

= (1/6)x2 - (38/11)x +(20/3)

So, the correct options are A and D

4 0
3 years ago
Which function does this graph represent: y=x-4;<br> y=-x+4;y=4x-1;y=-4x+1
allochka39001 [22]

The graph represents y=-4x-1

If you notice the line, it goes past the -1 on the y axis which indicates that the y intercept is -1 since that was the only choice which displayed this, we know that our answer is y=-4x-1

5 0
3 years ago
Solve.<br><br>10.8 - (-6.4) ×3​
Artist 52 [7]

Answer:

51.6

Step-by-step explanation:

10.8 - -6.4 is 17.2

17.2 x 3 is 51.6

4 0
3 years ago
Read 2 more answers
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