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Katena32 [7]
3 years ago
9

1/4 (2.6x+0.25)-5/8 (2.5-0.88x)

Mathematics
1 answer:
Lunna [17]3 years ago
3 0
The answer would be 0.3(4x-5)
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Find the unit rate for 4:1 and 2:2/3
Nuetrik [128]

Answer:

2

Step-by-step explanation:

4 miles

÷ 2

2 hours

÷ 2

=

2 miles

1 hour

=

2 miles

hour

4 0
3 years ago
What is the measure of angle B? Someone please help ASAP!!
Vedmedyk [2.9K]
The measure of angle B is 97°
6 0
4 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
4 years ago
Which expression represents 50 divided by an unknown number
Akimi4 [234]
You didn’t give answer choices, so I would say it would probably be;


50/x Or some other variable.

If you aren’t clear on what a variable is, it’s a letter that represents an unknown factor or numerical value in an expression.
If you aren’t aware of what 50 is divided by, my guess is you’d use a variable to state this.

So your answer should be 50/*variable*
In my example I used x, but your answer might use another letter.

I hope this helps, and I’m sorry if I’m wrong.
Good luck. :))
7 0
4 years ago
Read 2 more answers
Which is greater 99.04 or 99.040​
Alexeev081 [22]

Answer:

99.04

=

99.04

Step-by-step explanation:

8 0
3 years ago
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