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Alika [10]
3 years ago
6

Do you flip the inequality sign if you do the following:

Mathematics
2 answers:
klasskru [66]3 years ago
6 0
So the question ask to determine if the following procedures flip the inequality sign if they would do the procedure and the answer would be the following:
1 no sign change
2 sign doesnt change 
3 may or may not flip or change 
4 may or may not flip or change 
5 may or may not flip or change
castortr0y [4]3 years ago
4 0
No for all of them. you only switch the signs when you multiply or divide by a negative number
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Please answer correctly! I will mark you as Brainliest!
alukav5142 [94]

Answer:

1024pi/3

Step-by-step explanation:

to find the volume of a sphere you use the equation 4/3*pi*r^3

4/3*pi*8^3

4/3*pi*512

2048/3 pi

This is the volume of the whole sphere but we only need half so we can just divide by 2.

(2048/3 pi)/2

1024/3 pi

6 0
3 years ago
Work out the value of expression a - 3b when a=16 and b=3.
Elan Coil [88]

Answer:

your answer is going to have to be 7

8 0
2 years ago
Which of the terms cannot be combined with the others? 3xy 2x -5x x
elixir [45]

Answer:

the answer is 3xy

Step-by-step explanation:

2x can be combined with -5x and x because they have the same variables, but 3xy has the variable xy so it cannot be combined with the others

7 0
3 years ago
A​ true/false test has 8080 questions. Suppose a passing grade is 5252 or more correct answers. Test the claim that a student kn
Makovka662 [10]
<h2>Answer with explanation:</h2>

Let p be the proportion of the correct answers.

As per given , we have

H_0: p=0.50

H_a: p>0.50 , since the alternative hypothesis is right tailed , so the test is a one -tailed test.

If the student gets 52 answers correct out of 80.

i.e. the proportion of correct answers : \dfrac{52}{80}=0.65

Test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.65-0.50}{\sqrt{\dfrac{0.50(0.50)}{80}}}\approx2.68

P-value : P(z>2.68)=0.0037   [ by using p-value table for z (right-tailed)]

Since the p-value(0.0037) is less than the significance level (0.05), so we reject the null hypothesis.

Results : We have enough evidence to support the claim that a student knows more than half of the answers and is not just guessing.

8 0
3 years ago
I reallyyyy need help on this
ycow [4]

Answer:

4

Step-by-step explanation:

h(k(3))=\sqrt{2(3)+7+3}

         =4

6 0
3 years ago
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