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stepladder [879]
3 years ago
13

Help please!!,,,,,,,,

Mathematics
1 answer:
ipn [44]3 years ago
6 0

Answer:

Question #3: Answer = 31

Step-by-step explanation

• Plug in 3 for x

• Plug in -4 for y

| -3(3)² + 2(-4) | -(3)(-4)

From here, simplify. Don't forget to use PEMDAS!

| -27 +8 | + 12

| -19 | + 12

19 + 12

31

Use this same method to solve for Question #2!

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A TV with marked price Rs.16000 is available on 15% off. Then its selling price is
erastovalidia [21]

Answer:

13600

Step-by-step explanation:

Số tiền đã được giảm là :  16000 x 15% = 2400 Rs

Giá bán của chiếc TV là : 16000-2400= 13600 Rs

8 0
2 years ago
Read 2 more answers
What is the answer to y = 0.0793x + 31.3
SIZIF [17.4K]

Answer:

a line  :P

Step-by-step explanation:

This is the slope intercept form of a line.  

the formula is.....

y = mx + b

so that equations will make a line... that goes through 31.5 as it passes over the y axis... in a Cartesian graph...  hmmmmm  do they want you to draw it?

It would be hard to draw b/c of the 0.079  slope part.. but.. it's very very slightly going up hill... from 31.5....

3 0
2 years ago
How would I change this to standard form. <br><img src="https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20x%20-%201"
Pie

Answer:

x - 2y = 2

Step-by-step explanation:

the equation of a line in standard form is

Ax + By = C ( A is a positive integer and A, B are integers )

given y = \frac{1}{2} x - 1

multiply through by 2 to eliminate the fraction

2y = x - 2 ( subtract 2y from both sides )

0 = x - 2y - 2 ( add 2 to both sides )

x - 2y = 2 ← in standard form


8 0
3 years ago
An author argued that more basketball players have birthdates in the months immediately following July​ 31, because that was the
Lady_Fox [76]

Answer:

There is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

Step-by-step explanation:

In this case we need to test whether there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

A Chi-square test for goodness of fit will be used in this case.

The hypothesis can be defined as:

<em>H₀</em>: The observed frequencies are same as the expected frequencies.

<em>Hₐ</em>: The observed frequencies are not same as the expected frequencies.

The test statistic is given as follows:

 \chi^{2}=\sum{\frac{(O-E)^{2}}{E}}

The values are computed in the table.

The test statistic value is \chi^{2}=128.12.

The degrees of freedom of the test is:

n - 1 = 12 - 1 = 11

Compute the <em>p</em>-value of the test as follows:

p-value < 0.00001

*Use a Chi-square table.

p-value < 0.00001 < α = 0.05.

So, the null hypothesis will be rejected at any significance level.

Thus, there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

6 0
3 years ago
Which property of addition is used in the following (5+12)+6=5+(12+6)
Marianna [84]

Answer:

Associative property of addition

Step-by-step explanation:

its the same order only the () move

3 0
3 years ago
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