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3 years ago

Which linear equations have an infinite number of solutions? Check all that apply.

Mathematics

2 answers:

zhannawk [14.2K]3 years ago

4 0

Coinciding lines. These are lines that are on top of one another and go forever.

antiseptic1488 [7]3 years ago

3 0

Anything that has an equation like x<0 or x>0. Also equations like x=x or xy=xy

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Pls help with both 19 and 20 I’ll mark brainliest, show how you set up the problems

belka [17]

<h2>Answer:</h2>

Question 19:

Option A:

40 x 19 = 760

Option B:

A: 9,500 x 8 = 76,000

76,000 ÷ 100 = 760

B: 4,750 x 8 = 38,000

38,000 ÷ 100 = 380

C: 760 x 8 = 6,080

6,080 ÷ 100 = 60.8

D: 320 x 8 = 2,560

2,560 ÷ 100 = 25.6

Answer: $9,500

Question 20:

5.5 x 30 = 165

165 ÷ 100 = 1.65

1.65 + 5.5 = 7.15

Commission: 7.15%

382,000 x 7.15 = 2,731,300

2,731,300 ÷ 100 = 27,313

Answer: The agent earns $27,313 in commissions.

4 0

3 years ago

In a class of 150 students, 95 are taking Math, 75 are taking Science and 55 are taking both.What is the probability that a stud

garik1379 [7]

Probability of the student taking neither math nor science is 35 / 150 or 0.23

Explanation:

Given:

Total students = 150

Number of students taking maths = 95

Number of students taking science = 75

Maths + Science = 55

Probability of student taking neither math nor science = ?

Number of students taking only science = 95 - 55

= 40

Number of students taking only maths = 75 - 55

= 20

Number of students taking neither maths nor science = 150 - 40 - 20 - 55

= 35

Probability of the student taking neither math nor science is 35 / 150 or 0.23

6 0

4 years ago

State the domain for the set of points. {(8, 8), (5, 7), (-4, 8), (4, 8)}

exis [7]

Answer:

(8, 5, -4, 4)

Step-by-step explanation:

The domain is basically the input or x coordinate. The x coordinates of the points are 8, 5, -4, and 4. Therefore, the domain is 8, 5, -4, and 4.

8 0

4 years ago

Amy's grandmother gave her 3 identical chocolate chip cookies and 4 identical sugar cookies. In how many different orders can Am

Dmitrij [34]

Answer:

chocolate chip cookie first: 15 ways

chocolate chip cookie last: 15 ways

chocolate chip cookie first and last: 5 ways

Step-by-step explanation:

There is a total of 7 cookies.

Is she eats a chocolate cookie first, she will have 2 chocolate cookies and 4 sugar cookies (6 in total).

So, to find the number of different orders that Amy can eat the remaining cookies, we just need to calculate a combination of 6 choose 2 (that is, the number of ways we can put the 2 chocolate cookies among the 6 cookies) or a combination of 6 choose 4 (same thing, but for the sugar cookies):

C(6,2) = 6! / (2! * 4!) = 6 * 5 / 2 = 15 ways

Is she eats a chocolate cookie last, she will have 2 chocolate cookies and 4 sugar cookies (6 in total), so the problem is solved again with a combination of 6 choose 2:

C(6,2) = 15 ways

Is she eats a chocolate cookie first and last, she will have just 1 chocolate cookie left and 4 sugar cookies (5 in total), so the problem is solved with a combination of 5 choose 1 or a combination of 5 choose 4:

C(5,1) = 5! / (1! * 4!) = 5 ways

6 0

3 years ago

Anyone know how to figure this out. I need the answer by 7:30 tonight.

Sholpan [36]

You would need a more detailed picture

3 0

4 years ago