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AlladinOne [14]
3 years ago
8

PLEASE HELP GRADE IN MATH IS REALLY LOW IM STUPID. Question 1 (Multiple Choice Worth 5 points)

Mathematics
1 answer:
sergeinik [125]3 years ago
3 0

1. No, it is not a valid inference because her classmates do not make up a random sample of the students in the school

2. 80 students

3. 696 students

4. Yes, this is a valid inference because she took a random sample of the neighborhood

You might be interested in
6⋅[(32−8)÷4+2] What is the answer to this expession?
Nimfa-mama [501]

Answer:

48

Step-by-step explanation:

=6*[24/4+2]

=6*[6+2]

=6*8

=48

4 0
3 years ago
Plz answer and im giving a lot of points ; ; oh and its two questions in one
Natali [406]
Please don't ask 2 questions in 1 question



remember that percent is parts out of 100 so x%=x/100
basically just remove the percent sign and move the decimal place 2 places to the left  to convert to fraction

the first one
20 dollars
4.75% tax
15% tip
it depends if you want to tip on the total with tax or without tax
it is better to top on the without-tax value since tax comes from you so
find 4.75% of 20 and add that to 15% of 20 then add that to 20 to get the proper value

scenarios
1. 20+(20 times 4.75%)+(20 times 15%)=23.95
2. ([(20 times 104.75%)] times 115%)=24.09
both are bellow $25 so $25 shoudl be enough to cover it




total cost of a spa treatment of 42 with 6% tax and 20% tip
so you could again do two things:
1. apply tax and give tip on the new amount
2. find the tip and add that to the tax of only 42

scenarios:
1.(42 times 106%) times 120%=$50.4
2. (42 times 20%) +(42 times 106%)=$52.92
it depens on what you tip on
6 0
3 years ago
*Easy* & will mark brainest!! Does the image above mean no solution or infinite solutions? please let me know!
jenyasd209 [6]

Answer:

No solution.

Step-by-step explanation:

That image is of the symbol of the empty set. The solution set is empty, which means there is no solution.

8 0
3 years ago
Read 2 more answers
In a jar, 25% of the marbles are red. If there are 45 red marbles in the jar, how many marbles are in the jar altogether?
Tju [1.3M]

Answer: 180

Step-by-step explanation:

"Use a proportion to solve the problem."

"The number of red marbles represents a part of the unknown whole."

5 0
3 years ago
Read 2 more answers
Urgent! A lot of points!
solmaris [256]
Using the red diamond, the light blue triangle, the green circle, and the yellow diamond, the equation can be best answered like this: y = (10/9)x + 55

I drew a line through those points, and I landed on 55 on y-axis
I then used Rise/Run to calculate the slope. The yellow diamond is (71.5, 70) so starting at (58, 55), I go up 15 units and ended at (58, 70).
I then went 13.5 units to the right and ended at (71.5, 70)

Since we went up 15 and 13.5 to the right, we divide 15 by 13.5 and get (10/9) as the answer.

(10/9) is our slope and 55 is our y-intercept so we plug in the numbers into the equation and get the answer: y = (10/9)x + 55

This is the best answer I could get.
6 0
3 years ago
Read 2 more answers
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