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2 years ago

Fill in the missing reason for the last step.

Mathematics

1 answer:

jek_recluse [69]2 years ago

6 0

Answer:

Division

Step-by-step explanation:

You divided both sides of the inequality by -3. Multiplying/dividing by negative numbers change the sign of the inequality, so you have ">" turned into "<".

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There are 5 exams in a semester. You have scored 77, 90, 85, and 100 on the previous four exams. What must you make on the fifth

siniylev [52]

Answer:

<h2>The correct answer for this question is 78.</h2>

Step-by-step explanation:

The average or mean of any variable or mathematical phenomenon is calculated as the division of the sum of all the numbers or items within the particular variable by the total number of items or numbers within the variable.
In this case, the marks of the 4 exams in the semester are 77,90,85 and 100 respectively.There are total 5 exams in the semester.
Let's suppose that the marks for the 5th exam is x.
Therefore, based on the mathematical formula to compute average or mean,to get an overall average of 86 including all the 5 exams, one has to get:-

$\frac{77+90+85+100+x}{5}=86$

$77+90+85+100+x=430$

$x=430-77-90-85-100$

$x=78$

Hence, based on the above calculations,one has has to get 78 on the 5th exam to obtain an overall average of exactly 86.

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3 years ago

What forms of measurement of length, width, height, and distance are forms of what measurement?

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The length, width, and height In the most common contexts in elementary school, mathematics does not have a formal definition for these terms, nor does it have rules about "proper" use.

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2 years ago

What is the highest mulitipul of 2&3

yKpoI14uk [10]

Hope it's 30. .....................

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2 years ago

If male and female college students work an average of 15 hours per week during the school year and the standard deviation is 5.

ki77a [65]

The variance of hours males spend working is almost two times as large as females. 60% of those females are more likely to work between 12.7 to 17.3 hours while 60% of the males work between 9.6 to 20.3 hours based on one standard deviation.

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2 years ago

Read 2 more answers

Create a one step equation using the numbers 4 and 6. One you create the

Nataly [62]

Answer:

x=1.5

Step-by-step explanation:

4x=6

6/4=1.5

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2 years ago