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shtirl [24]
2 years ago
6

Evaluate the expression when a = -4 and x=5. -5a +x

Mathematics
2 answers:
bonufazy [111]2 years ago
5 0

Answer:

Step-by-step explanation:

dedylja [7]2 years ago
4 0

Answer:

25

Step-by-step explanation:

first substitute letters for their numbers in parentesis

-5(-4)+(5)

20+5

25

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Whats the mean,median,mode,range for 86,90,93,85,79,and 92
Tasya [4]
Mean 87.5
Median 88
Range 14
and Mode All values appeared just once
6 0
3 years ago
The marketing club at school is opening a student store. They randomly survey 50 students about how much money they spend on lun
Luden [163]

Answer:

The expected value for a student to spend on lunch each day = $5.18

Step-by-step explanation:

Given the data:

Number of students______$ spent

2 students______________$10

1 student________________$8

12 students______________$6

23 students______________$5

8 students_______________$4

4 students_______________$3

Sample size, n = 50.

Let's first find the value on each amount spent with the formula:

\frac{num. of students}{sample size} * dollar spent

Therefore,

For $10:

\frac{2}{50} * 10 = 0.4

For $8:

\frac{1}{50} * 8 = 0.16 l

For $6:

\frac{12}{50} * 6 = 1.44

For $5:

\frac{23}{50} * 5 = 2.3

For $4:

\frac{8}{50} * 4 = 0.64

For $3:

\frac{4}{50} * 3 = 0.24

To find the expected value a student spends on lunch each day, let's add all the values together.

Expected value =

$0.4 + $0.16 + 1.44 +$2.3 + $0.64 + $0.24

= $5.18

Therefore, the expected value for a student to spend on lunch each day is $5.18

7 0
3 years ago
Please guys i really need your help and please explain how you got it please
lina2011 [118]
The answer would be C because in order to find the area of a figure, you would need to multiply its height by its width. finding the area of a figure is the same as finding how many units are in a figure. because this is a square and all the sides are equal, by counting the total number of units, you can find the area.
5 0
3 years ago
Please help me. Explain this and give answer
Trava [24]

Answer:

It's B) 60

Step-by-step explanation: Just look at the similar one above T.

8 0
3 years ago
The cost to rent a video game for 3 days was $10. It costs the same amount each day. How could one find the cost to rent the vid
koban [17]

Answer:The answer is the cost to rent for one day is the quotient of $10 and 3.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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