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lina2011 [118]
3 years ago
7

Which value is equivalent to 83⋅87

Mathematics
1 answer:
inna [77]3 years ago
8 0

I'm confused can you edit your question and then ask it again

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Solve for x. <br><br> -3x = -15
yuradex [85]

Answer:

x = 5

Step-by-step explanation:

-3x = 15

----     ----

-3      -3

x = 5

7 0
3 years ago
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Use inverse operations to find the inverse of y = 27x?<br> The inverse of y = 27x3 is y =
VLD [36.1K]

Answer:

  y = (∛x)/3

Step-by-step explanation:

To undo the multiplication by 27, you multiply by its inverse:

  (1/27)y = (1/27)(27x^3)

  y/27 = x^3 . . . . . . . . . . . simplify

To undo the cube, you take the cube root:

  (∛y)/(∛27) = ∛(x^3)

  (∛y)/3 = x

Apparently, you want the inverse function, so you swap the variables:

  y = (∛x)/3

_____

You can swap the variables at the beginning or end. It doesn't matter. If you do it at the beginning, you have ...

  x = 27y^3

and you're solving for y. You use the same inverse operations that we used above.

7 0
3 years ago
A driver's education course compared 1,500 students who had not taken the course with 1,850 students who had. Of those students
aivan3 [116]

Answer:

P-value is less than 0.999995 .

Step-by-step explanation:

We are given that a driver's education course compared 1,500 students who had not taken the course with 1,850 students who had.

Null Hypothesis, H_0 : p_1 = p_2 {means students who took the driver's education course and those who didn't took have same chances to pass the written driver's exam the first time}

Alternate Hypothesis, H_1 : p_1 > p_2 {means students who took the driver's education course were more likely to pass the written driver's exam the first time}

The test statistics used here will be two sample Binomial statistics i.e.;

                             \frac{(\hat p_1 - \hat p_2)-(p_1 - p_2)}{\sqrt{\frac{\hat p_1(1- \hat p_1)}{n_1} + \frac{\hat p_2(1- \hat p_2)}{n_2} } } ~ N(0,1)

Here, \hat p_1 = No. of students passed the exam ÷ No.of Students that had taken the course

 \hat p_1  = \frac{1150}{1850}            Similarly,  \hat p_2 = \frac{1440}{1500}          n_1 = 1,850       n_2 = 1,500

  Test Statistics = \frac{(\frac{1150}{1850} -\frac{1440}{1500})-0}{\sqrt{\frac{\frac{1150}{1850}(1- \frac{1150}{1850})}{1850} + \frac{\frac{1440}{1500}(1- \frac{1440}{1500})}{1500} } } = -27.38

P-value is given by, P(Z > -27.38) = 1 - P(Z > 27.38)

Now, in z table the highest critical value given is 4.4172 which corresponds to the probability value of 0.0005%. Since our test statistics is way higher than this so we can only say that the p-value for an appropriate hypothesis test is less than 0.999995 .

6 0
3 years ago
PLEASE HELP ME OUT IM FAILING MATH‍♂️ Thx
Tatiana [17]
The question is looking for the amount of boxes (24 per box) needed for the event (300). If you multiply 24 by each number, you would be able to find the answer. 24*11 = 264, so that isn’t enough. 24*12 = 288, and that also isn’t enough. But if you do 24*13, you get 312, which gives you more than enough cupcakes for the event. So the answer is 13.
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3 years ago
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Of the 18 teachers in Shane's school,
grin007 [14]
9:7 is the answer yeah
5 0
3 years ago
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