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abruzzese [7]
3 years ago
11

Find the widest range of scores that you can get on a final exam in order to receive a grade of B for the class. Using interval

notation
Need answer asap!!

Mathematics
2 answers:
Drupady [299]3 years ago
4 0

Answer:

Correct choice is B

Step-by-step explanation:

Let x% be your final test score, then the average of all test scores is

\dfrac{96+77+74+x}{4}.

Since you must have an average between 80% and 89%, then

80\le \dfrac{96+77+74+x}{4}\le 89,\\ \\320\le 247+x\le 356,\\ \\73\le x\le 109.

X is measured in percent, then the greatest value of x can be 100%. You get that

73\%\le x\le 100%.

stellarik [79]3 years ago
3 0

Answer:

[73, 100}

Step-by-step explanation:

96 + 77 + 74 + 65 = 312

312/4 = 78

96 + 77 + 74 + 70= 317

317/4 = 79.25

96 + 77 + 74 + 73 = 320

320/4 = 80

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1/3x7 ...............
leonid [27]

Answer:

Simplify the expression.

Exact Form:

7/3

Decimal Form:

2.3

Mixed Number Form:

2 1/3

Add-on:

hope this helped at all.

6 0
3 years ago
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Which is the better buy? a 12-pack of Pepsi for $3.50 or a 6 pack for $1.80
xxMikexx [17]

Answer:

1.80

Step-by-step explanation:

it very useful to understand very well

4 0
3 years ago
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Determine the intercepts of the line.<br> Do not round your answers.<br> y=-2x-21y=−2x−21
Neko [114]

Answer:

x(-10.5,0)

y.(0,-21)

Step-by-step explanation:

I just took the test and got 100% correct trust me

Put a thanks

Thank you

4 0
2 years ago
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Write the following sets in set-builder notation: (a) The set of all humans whose first name is Tanya or Nelson.
Ulleksa [173]

Answer:

Step-by-step explanation:

Set is a well defined collection of objects .

We can express set in roaster form or set - builder form

<u>Roaster Form</u>

We express elements within curly brackets using commas between the elements .

<u>Set Builder Form</u>

In set builder form , all the elements of the set possess a common property which is not possess by elements outside the set .

We describe the elements of set using a symbol x which is followed by a colon . After colon , we write property possessed by the element and then enclosed the description within curly brackets .

(a)The set of all humans whose first name is Tanya or Nelson

We need to write this one in set builder form .

Define set as follows : { x ∈ H : H is set of all the humans and x is either Tanya or Nelson }

5 0
3 years ago
Can someone explain this? :)
Alchen [17]

I'll do part (a) to get you started.

The angle 'a' pairs up with the 123 degree angle as a corresponding angle pair. Due to the parallel lines, the corresponding angles are congruent. Therefore a = 123.

We also see that b = 123 as well since a = b (they are vertical angles).

Notice how angle c is adjacent to the 123 degree angle. These two angles form a straight line, so they must add to 180 degrees.

c+123 = 180

c = 180-123

c = 57

-------------------------

To summarize, we have these three angles

a = 123

b = 123

c = 57

6 0
3 years ago
Read 2 more answers
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