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aleksklad [387]
3 years ago
11

2-2x>-20 A. x> 12 B. x <9 C. x < 10 D. x < 11

Mathematics
2 answers:
Ulleksa [173]3 years ago
8 0

Answer:

D. x<11

Step-by-step explanation:

This is because:

2-2x>-20

-2x>-20-2

-2x>-22

(x gets cut=off from two sides and 2 from the LHS divides 22 by 11. Hence we get: )

x>11

This is the correct answer, but if you want to match this answer with the question:

x>11 (We got)

now,            0>11-x

-11>-x      (- gets cut off)

11>x

(ie.) x<11

Hence Proved!!!

Hope this helped

Pls click Brainliest answer if this helped you!

Thepotemich [5.8K]3 years ago
3 0

Answer:

Step-by-step explanation:

-2x>-20-2

-2x>-22 | /(-2)

x<11

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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
2 years ago
There are 6 red marbles, 9 blue marbles, and 10 green marbles in a bag.
Nat2105 [25]

Answer:

I think 64%

Step-by-step explanation:

6+9+10 = 25

25x4 = 100

6x4 = 24

10x4 = 40

24+40 = 64

64/100 = 64%

Sry if this is wrong but I think this should be correct

7 0
2 years ago
Read 2 more answers
Need help asap<br> plzzzzzzzz
Ket [755]
The volume of the cylinder is C, 753.6 mm³.

To find the volume of the cylinder, in cubic millimeters, we must first convert all of the measurements into millimeters. The only measurement that isn't in millimeters is height, and 1.5 centimeters is equal to 15 millimeters. 

Now, we need to find the volume. The volume can be found by doing πr²h. Now we can substitute values and solve.

V = πr²h

V = 3.14(4)²(15)

Simplifying this, we get that V = 753.6, meaning that our answer is C, 753.6 mm³.
5 0
3 years ago
Como se hace -8n+7=31
velikii [3]
-8n+7=31
-8n+7-7=31-7
-8n=31-7
-8n=24
-8n÷(-8)=24÷(-8)
n=24÷(-8)
n=-24÷8
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8 0
3 years ago
Which expression is equivalent to 5(a + b) ?
torisob [31]

Answer:

A is the answer

Step-by-step explanation:

5 multiplys by a to get 5a and 5 muliplys by b to get 5b

because a is equal to 1 and b is equal to 1

it applies to any letter

so 5*a= 5a

and 5*b=5b

so it turns into 5a+5b  

plz mark brainly and hope it helped u

8 0
2 years ago
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