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Ann [662]
4 years ago
9

QUESTION 8 Write an inequality to represent the real-world problem. Then explain how you created the inequality. You have caviti

es and you are looking for a cheaper dentist. Dentist A costs $50 for the visit and $20 per cavity. Dentist B costs $70 for the visit and $5 per cavity. When would Dentist B be cheaper than Dentist A?
Mathematics
1 answer:
Marizza181 [45]4 years ago
6 0

Answer:

I can give you alittle head start. I hope it kinda helps.

Step-by-step explanation:

Dentist A: 50 + 20x

Dentist B: 70 + 5x

It cost 20 more dollars for the visit and 15 dollars less for each cavaty at Dentist B.

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Patricia scored 80% on a math test. She missed 4 problems. How many problems were on the test?
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Answer: There are 20 problems on the test.

Step-by-step explanation:

Since we have given that

Patricia scored 80% on a math test.

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8TH GRADE MATH
IRISSAK [1]

Answer: choice G)

Corresponding angles are congruent; therefore, 2x+52 = 76

===========================================================

Explanation:

Let's go through the answer choices one by one

  • We can rule out choice F because 4x and 104 are alternate exterior angles. They are equal because line a and line b are parallel. So 4x = 104 is a valid equation to solve for x.
  • Choice G is the answer because 2x+52 and 76 are not corresponding angles. One possible pair of corresponding angles are 2x+52 and 104. These two angles are in the southeast corner of each 4 corner angle configuration, which is why they correspond to one another. The pairing 2x+52 and 76 are instead supplementary, so those two angles add to 180.
  • We can rule out choice H because 4x and 2x+52 are congruent vertical angles. Vertical angles form when we have an X shape from the intersection of two lines. Specifically vertical angles are opposite one another like the diagram shows.
  • We can rule out choice J because the angles (4x) and (x+50) are supplementary. This means they add to 180. This applies to any pair of same side exterior angles. They are on the same side of the transversal line t. They are exterior because they are outside of the parallel lines a and b.
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Which expressions can never result in a negative real number when evaluated for any value of x? Select all that apply.
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