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2 years ago

Please help, thank you so much! I'll give brainliest to the correct answer!

Mathematics

2 answers:

andriy [413]2 years ago

6 0

Answer:

Step-by-step explanation:

The other are impulse purchases:

1. She does not buy the groceries because she wanted magazines.

3.She does not buy the groceries, instead she buys flowers.

ratelena [41]2 years ago

5 0

Answer:

Step-by-step explanation:

This is because the other ones were going to be spent on something else, but then they were spent on magazines or flowers.

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1) Omar has scored 85, 71, and 77 on the first three exams in his math class. If the standard 70,80,90 scale is used for grades

Rus_ich [418]

Answer:

a. 47

b. 87

c. 127

Step-by-step explanation:

Assume a total of 4 exams ( first 3 plus a final)

Let final score be X,

Hence, average score = (85 + 71 + 77 + x) / 4 = (233 + x) / 4

a) to get a C, the average score must be 70

70 = (233 + x) / 4

(233 + x) = 70 (4) = 280

x = 280 - 233 = 47 (Ans)

b) to get a B, the average score must be 80

80 = (233 + x) / 4

(233 + x) = 80 (4) = 320

x = 320 - 233 = 87 (Ans)

c) to get a A, the average score must be 90

90 = (233 + x) / 4

(233 + x) = 90 (4) = 360

x = 360 - 233 = 127 (Ans)

6 0

2 years ago

What is margin of error??

Tems11 [23]

Answer:

The margin of error for a sample size of 250 is 6

Step-by-step explanation:

The margin of error is given as

1/square root of the sample size

Thus, margin of error for a sapless size of 250 is

1/√250

= 1/15. 811

= 6

8 0

3 years ago

11. Give two examples of each type of number: real, natural, integers, rational and irrational.

zaharov [31]

Answer:

real:√2, 3,-1, 1/2 etc

natural: 1,2,3,4,5,6.....(0 is not included)

integers:. .............-4,-3,-2,-1,0,1,2,3,4........ etc

rational: nos. which are in p/q form

:1/2,3/4,4/9 etc

irrational: nos. which cannot be written in p/q form

: √2,√3... etc

irrational: √2, √3, √5, √11, √21, π(Pi)

7 0

2 years ago

Determine if the function is one-to-one.<br><br>

olya-2409 [2.1K]

Answer:

Step-by-step explanation:

From what I saw on google for what "one to one" means, It's basically meaning that the bottom of that quadratic function is at point (0 , 0) and hits both (-1 , 1) and (1 , 1) on the graph.

4 0

3 years ago

The sale price of an item is $180 after a 25% discount is applied. What is the original price of the item?

torisob [31]

original price is $240

5 0

3 years ago

Read 2 more answers