We denote "B" as the value average of the four test values for B score (between 80 - 89) and "X" as the score on the 4th test so to find the range of values that Alice needs to score in the 4th test we only have to replace in the next formula:

$B=\frac{94 + 77 + 87 + X}{4}$

$X=4*B-94-77-87$

We reformulate the equation in function of B

We have the next range of values for "B" (80, 81, 82, 83, 84, 85, 86, 87, 88, 89), we replace those values in the formula and operate to get the range of values we need to score in the 4th test.

$X=4*80-94-77-87=62$

$X=4*81-94-77-87=66$

$X=4*82-94-77-87=70$

$X=4*83-94-77-87=74$

$X=4*84-94-77-87=78$

$X=4*85-94-77-87=82$

$X=4*86-94-77-87=86$

$X=4*87-94-77-87=90$

$X=4*88-94-77-87=94$

$X=4*89-94-77-87=98$

As we can see for Alice to get a B for the semester she needs to score on the 4th test a score between 62 and 98 points.

6 0

4 years ago

Which of the following places are you likely to see erosion happen quickly? (2 points)

dalvyx [7]

On the coastline during a hurricane

4 0

3 years ago

Read 2 more answers

To ensure a smooth transfer, the outgoing Incident Commander should provide a ___________ to the new Incident Commander.

chubhunter [2.5K]

Answer:

Briefing-

Explanation:

Briefing-

when responsibilities is transfer from one incident commander to new incoming incident commander, the termed used for briefing is called transfer of command briefing.

Few reason behind transfer of command

1) when official considered to be necessary to take command

2) for more effectiveness of work

3) due to personal emergencies

4 0

3 years ago

Why does the author use a problem-solution text structure in the paragraph?

Zanzabum

Answer:

in what paragraph

Explanation:

3 0

3 years ago