MATHEMATICS HIGH SCHOOL

A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 140 lb and each box of books weighs 50 lb. The maximum capacity of the elevator is 830 lb. How many boxes of books can the delivery person bring up at one time?

Answers

Answer 1

Answer:

We can model this with the following inequality

50x + 160 ≤ 1000 where x is the number of boxes....so, subtracting 160 from each side, we have

50x ≤ 840 divide both sides by 50

x ≤ 16.8 boxes ....but since he can't bring up partial boxes, round down to 16

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In a certain math class, it is known that 18 students LOVE math review, and 5 students dislike math review. The teacher randomly selects three students from the class. What is the probability that all three students love math review?

Answers

The probability that the first random choice will be a matho-file and not a -phobe is 18/23. The probability of the second one is 17/22, and for the third one it's 16/21. The probability of all 3 is 4,896/10,626 = (18x17x16)/(23x22x21). That's 46.1% (rounded).

approximate the volume of the backpack that is 17in × 12 in × 4inif you need a picture I'll try to send it to help

Answers

To find volume you multiply all three dimensions by one another. We can approximate this by multiplying the smaller ones first.

12*4=48 Now multiply 48 by 10.

48*10=480 We still have 7 to deal with, so we can multiply 48 by 2 and then by 5.

48*5=240
48*2=96

Now add the three together.

480+240+96=816.

Your answer is 816.

The formula for volume would make the equation 17" x 12" x 4", which would make it 816 cubic inches.

Point R has coordinates (0,2). Point S is symmetric to point R with respect to the line y=x. What are the coordinates of point S?(2,0)
(1,1)
(1,0)
(-5,0)

Answers

y=x
basiclaly switch x and y
(x,y) now becomes (y,x)

(0,2) becomes (2,0)

answe ris (2,0) or aA

Colette has already spent 3 minutes on the phone, and she expects to spend 1 more minutewith every phone call she routes. In all, how many phone calls does Colette have to route
to spend a total of 26 minutes on the phone?

Answers

If she spends 4 minutes on each call she would need to make 7 calls

What is the rate of change for the interval between 0 and 2 for the quadratic equation as f(x) = 2x2 + x – 3 represented in the table? (The table has this: Left side X and the options going down are -2, -1, 0, 1, 2. Right Side f(x) and the options going down are 3, -2, -3, 0, 7) THE ANSWER OPTIONS ARE: 1/5, 4, 5, 10

Answers

By definition the rate of change of a function is given by:
$AVR = (f(x2) - f(x1))/(x2 - x1)$
For the interval [0, 2] We have to make use of the table:
$f(0)=-3 f(2)=7$
Therefore, substituting values in the given expression we have that the average change of rate is given by:
$AVR = (7-(-3))/(2-0)$
Rewriting we have:
$AVR = (7+3)/(2-0)$
$AVR = (10)/(2)$
$AVR = 5$
Answer:
the rate of change for the interval between 0 and 2 is:
$AVR = 5$

Answer:

Step-by-step explanation:

♥☺

3+ (-5)
Help me please

Answers

Answer:

-2

Step-by-step explanation:

3 + - 5 is basically 3 -5 because when a negative meets a positive the signs turn into a negative.

3 -5 is 5 less than three which is -2.

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A root of x2 – 5x – 1 = 0 is

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Advance tickets for a school play went on sale. The price of each student ticket was $4 and everyone else paid $5. On the first day, no more than $80 in tickets were sold. Describe and explain the possible values of s, the number of student tickets sold, and e, the number of tickets sold to nonstudents.