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3 years ago

Which of the following sets of ordered pairs represents a function?

2 answers:

3 0

The 4th option is a function because x doesn’t repeat in it and all the others the x repeats

Hope this helps

Have a great day/night

Ksju [112]3 years ago

3 0

Answer:
The last option

Explanation:
A function only works when x is paired with only one y. In the first three option the same x is paired with different y

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Is the perpendicular bisector of . What is the length of ?

mixas84 [53]

Answer:

the answer is C. 12

Step-by-step explanation:

5 0

3 years ago

he response times for a random sample of 40 medical emergencies were tabulated. The sample mean is 13.25 minutes. The population

Gwar [14]

Answer:

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

The EMS director wants to service goal of 12 minutes or less is being achieved

Step-by-step explanation:

Step(i):-

Given that the size of the random sample = 40

Given that the mean of the sample (x ⁻) = 13.25

Given that the standard deviation of the Population = 3.2 minutes

Level of significance = 0.05

The mean of the Population (μ) = 12

Step(ii):-

Null hypothesis:-H₀: (μ) = 12

Alternative Hypothesis: H₁ : μ < 12

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{13.25-12 }{\frac{3.2}{\sqrt{40} } }$

Z = 2.5

The tabulated value Z₀.₀₅ = 1.96

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

Final answer:-

The EMS director wants to service goal of 12 minutes or less is being achieved

3 0

3 years ago

24. Daniel bought a new car for $15,000. He also paid two fees for the car dealership: • $450 for an extended warranty • $275 fo

Vikki [24]

The amount of down payment is $1368.08.

We add the fees to the price of the vehicle:
15000+450+275 = 15725.

We take 100% of this number and add an additional 8.75% sales tax; 100+8.75 = 108.75; 108.75% = 108.75/100 = 1.0875:
1.0875(15725) = 17100.94

He paid 8% of this total as a down payment; 8% = 8/100 = 0.08:
17100.94*0.08 = 1368.08

8 0

3 years ago

Which graph shows a set of ordered pairs that represents a function?

pychu [463]

Answer:

B represents a function.

Step-by-step explanation:

Recall these characteristics of a "function:"

Only one y-value can be associated with each x-value.

Thus, A could not represent a function because there are two points with x = 1 and two different y-values: (1, 1) and (1, -2).

B represents a function because for each input (x-value) there is one and only one y-value associated.

C not a function: (2, 3) and (2, -3) have two different y-values associated with one x-value (2).

D not a function: (-3, 4) and (-3, -4) (see A and C, above)

6 0

3 years ago

3. Three times a number is seven more than double the number. What is the number?

victus00 [196]

Answer:

Step-by-step explanation:

3 * 7 = 21

21 - 7 = 14

7*2 =14

3 0

3 years ago