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atroni [7]
3 years ago
7

HELP I REALLY REALLY NEED THIS HELP MEE SUPER EZ 28 POINTS I REALLY NEED THIS I DONT REALLY CARE IF ITS WRONG AT LEAST YOU TRY ;

)
43. A frequency table is shown for the height’s of 4th graders in a class at Riverbend Elementary School. What is the probability that a fourth grader in this class is44 inches tall?


46. A bag contains 4 red, 3 green and 2 blue marbles. What is the probability of selecting a green marble and then a blue marble assuming you replace the first marble?

48. Sam draws a card and replaces it 20 times from a standard deck of 52 cards. He draws 16 black cards and 4 red cards. What is the experimental probability of drawing a black card?

49. Mark has a six-sided number cube. Each side is numbered from 1 to 6. What is the probability, expressed as a ratio, that Mark will roll a 6?

50. How likely is it that you would pick a pink marble out of a bag of marbles that had green, blue, red, and yellow marbles?

The graph shows the number of tickets sold at a movie theater (x-axis) and the total cost in dollars (y-axis). Which coordinate pair shows the unit rate?

22. As low tide came in, the ocean dropped by a rate of 12 inches every 3 minutes. Write a rational # describing this rate.
Mathematics
1 answer:
Lesechka [4]3 years ago
4 0

Answer:

43. I'm not really sure about this one but here's what I got:

The average height of a 4th grader is 58 inches. (Maybe that'll help) Also if it's by the number of kids in the class....I would assume that there are at most 33 kids in the class....I'm not sure what it's asking...sorry :(

46. There are 8 total marbles so if you were selecting a green marble the probability of getting a green marble would be 3/8. If there are 2 blue marbles  then the probability would be 2/8 or 1/4

LINK: https://mathbitsnotebook.com/Geometry/Probability/PBIndependentDependent.html

48. In a deck of cards there are 26 black cards and 26 red cards. Number of event occurrences. Total number of trials. For example, if a dice is rolled 6000 times and the number '5' occurs 990 times, then the experimental probability that '5' shows up on the dice is 990/6000 = 0.165. That should help with this one

LINK:

https://explorable.com/experimental-probability

49. Since there are 6 sides and each side is a number 1-6, the probability of rolling a six is 1:6

50. This one is easy if you read the question right. There are no pink marbles....

I'm not that great with graphs

I hope this helped a little....some of the questions I didn't understand.

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What is the surface area of this prism? A. 976 cm2 B. 960 cm2 C. 488 cm2 D. 736 cm2
Vikki [24]

Answer:

The answer is C, 488 cm2

Step-by-step explanation:

5 0
3 years ago
128 POINTS IF YOU HELP
Aleksandr-060686 [28]
(A) We let y = the cost and are told x = the number of people. Since you pay $20 per person, the cost is 20x. That is, y=20x

(B) Again, let the cost =y and the number of people is given as x. You pay $10 per person or 10x plus an additional $50 for the room. That is, y=10x+50

(c) Link to graphs: https://www.desmos.com/calculator but if that doesn't work see the attachment for a screen shot. You just have to put the equations (type them) at left and the graph comes automatically.

(D) The admission price is the same when the two equations are equal. You can find this by setting them equal to each other as such: 20x = 10x+50 and solving for x. However, since you just graphed them the point of intersection (where the lines share/have the same point) gives the information. Remembers that (x,y) = (people, cost). The graphs intersect at (5, 100) so for 5 people the cost is the same and the cost is $100.

(E) For the regular rate we let x = 6 and solve for y (the cost). We get y = 20x which is y = (20)(6)=120. It costs $120 using the regular rate to take 6 people. Now let's use the equation for the group rate again with x = 6. Here we get y = 10x +50 or y = 10(6)+50 = $110. The group rate costs $110.

(F) The cost is the same at 5 people but if there are more than five the group rate is better as we saw in part E. So the regular rate is better for less than 5 people.

(G) Here y = $150. Let us use the group rate formula and solve for x (the number of people). 10x+50 = 150 so 10x = 100 and x = 10. Since 10 is more than 5 this is the better deal. However if you don't believe it or want to double check we can solve for x using y = 150 and the regular rate equation. We get: 20x = 150 so x = 7.5 Since we can't bring half a person we would only be able to bring 7 and that is less than 10 so this is not the best choice. Use the group rate and bring 10 people!

8 0
3 years ago
Read 2 more answers
What is 3/4 fraction as a mixed number​
lyudmila [28]

Answer:

0 3/4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
15 POINT 1 QUESTION<br> ITS ALL UP TO YOU!!!!
Anni [7]

First, we can simplify the left side. (6+8x)/2 is equal to 3 + 4x. We can put the equation together at this point.

3 + 4x = 5x

we can subtract 4x from both sides to get our final answer,

3 = x, or x = 3. :)

8 0
3 years ago
I don't get this at all.
gogolik [260]
If she has 3 cheeses and wants to bring in cheese for 12 days she has 3 and splits it up into 12 days so thats 3/12 which is 0.25 per day
8 0
3 years ago
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