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Sergeeva-Olga [200]
3 years ago
7

Hey I need help on this question not getting it, if one of you could please help me it would mean alot! Thank you!!

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

Answer:

A. y=-0.5x-2.5

Step-by-step explanation:

To figure out the equation of a line, use the formula y=mx+b, where x and y are the co-ordinate values, m is the slope and b is the y-intercept (where the line cuts the y-axis).

The slope, m, is calculated by dividing the y-difference (in this case, -2.5) by the x-difference (5): -2.5/5 = -0.5

From the diagram, we can see the line cuts the y-axis at (0,-2.5). Therefore b=-2.5

Sub in our values to get: y=-0.5x-2.5

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Does (3,5) and (-3,-5) lie in the same quadrant
Arlecino [84]

Answer:

no they don't one lies in  quadrant 1 while the other is in quadrant 3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
32x + 23 - 42 = 365<br><br> What does x equal?
liubo4ka [24]
As you bring all the non-variable numbers over to the right side, it becomes 384 which you then will divide the 32 in x which gives us 12. so x=12

6 0
3 years ago
X/3 - ( -2) =16 and its 7 th grade algebra btw i need help
Novosadov [1.4K]

Answer x/3 -(-2)= 16

X/3+ 2=16

X/3=16-2

X/3=14

X= 14x3=42

Step-by-step explanation:

3 0
3 years ago
Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at ru
valina [46]
  1. For this study, we should use t-test and the null and alternative hypotheses would be given by H₀: μ = 7 and H₁: μ < 7.
  2. The test statistic is -1.941 and the p-value (0.0381) is <u>greater than</u> α = 0.01.
  3. Based on this, we should <u>fail to reject</u> the null hypothesis.
  4. Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

<h3>What is a null hypothesis?</h3>

A null hypothesis (H₀) can be defined the opposite of an alternate hypothesis (H₁) and it asserts that two (2) possibilities are the same.

<h3>How to calculate value of the test statistic?</h3>

The test statistics can be calculated by using this formula:

t=\frac{x\;-\;u}{\frac{\delta}{\sqrt{n} } }

<u>Where:</u>

  • x is the sample mean.
  • u is the mean.
  • is the standard deviation.
  • n is the number of hours.

For this study, we should use t-test and the null and alternative hypotheses would be given by:

H₀: μ = 7

H₁: μ < 7

t=\frac{6.3\;-\;7}{\frac{1.3}{\sqrt{13} } }\\\\t=\frac{-0.7}{\frac{1.3}{3.6056 } }

t = -0.7/0.3606

t = -1.941.

For the p-value, we have:

P-value = P(t < -1.9412)

P-value = 0.0381.

Therefore, the p-value (0.0381) is <u>greater than</u> α = 0.01. Based on this, we should <u>fail to reject</u> the null hypothesis.

Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

Read more on null hypothesis here: brainly.com/question/14913351

#SPJ1

4 0
2 years ago
there were 20 plants sold at a store on Saturday and 30 plants sold at the store on Sunday. customers bought 5 plants each. how
pshichka [43]

Answer:

  10

Step-by-step explanation:

20/5 = 4 customers bought plants on Saturday; 30/5 = 6 customers bought plants on Sunday. In all 4 + 6 = 10 customers bought the plants.

6 0
3 years ago
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