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Reil [10]
2 years ago
15

HELPPP PLS

Mathematics
1 answer:
makkiz [27]2 years ago
5 0

Answer:

Segment addition postulate

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Each marble bag sold by Yolanda's Marble Company contains 8 orange marbles for every 5 yellow marbles.
Stells [14]

Answer:

64.

Step-by-step explanation:

By proportion  to number of orange marbles =  (40 / 5) * 8

=  320 / 5

= 64 .

7 0
3 years ago
A statistics professor drew a random sample of 81 observations and found that x with bar on top equals 62 s equals 15. Estimate
ratelena [41]

Answer:

LCL = 59.26 to two decimal places

Step-by-step explanation:

Here, we want to estimate the LCL of the population mean with 90% confidence

We proceed as follows;

Given alpha = 0.1, then Z(0.05)=1.645 (from standard normal table), s = 15

Mathematically;

LCL =x_bar -Z*s/√( n)= 62 - (1.645 * 15)/√81

LCL = 62- (24.675)/9 = 59.2583

LCL = 59.26 to two decimal places

3 0
3 years ago
A quantity with an initial value of 9700 grows continuously at a rate of 0.65% per hour. What is the value of the quantity after
Llana [10]

Answer:

.65% / hr = .0065 / hr

2.75 days * 24 hrs / day = 66 hrs

66 hrs * .0065 / hr = .429

So our amount will become

A = A0 ( 1 + .429) = 9700 * 1.429 = 13860

7 0
3 years ago
Suppose you have a job teaching swimming lessons and get paid $6 an hour. You also have job as cashier and get paid $8 and hour.
VikaD [51]
This is a system of equations problem.

L =  Hours of Swim Lessons
C = Hours as Cashier

L + C = 15        This is an equation for working 15 hours total.
so
L = 15-C

6L + 8C = 100   This is an equation for making at least $100.
so
6 (15-C) + 8C = 100    *You substituted 15-C for L here
90 - 6C + 8C = 100      Distribute
90 + 2C = 100
2C = 10
C = 5          You can work 5 hours as a cashier

L + C = 15
L + 5 = 15
L = 10          You can work 10 hours teaching swimming lessons.

If you want to make EXACTLY $100 you would work 5 hours as cashier and 10 hours teaching swimming lessons.

HOWEVER, the question says AT LEAST $100 and NOT MORE than 15 hours per week. Since you make more money as a cashier, any work over 5 hours will help you make over $100.

As long as you work at least 5 hours as a cashier and any remaining hours teaching swimming lessons, you will make over $100.

5 cashier, 10 swimming
6 cashier, 9 swimming
7 cashier, 8 swimming...

Mr. Pacey
JH/HS Social Studies Teacher
(but I've also helped with Math Team for JH & HS)
4 0
3 years ago
3. Grad point question for a quiz<br><br>Graph the inequality.<br><br>A. x -3<br>D. x≤-3
LUCKY_DIMON [66]

Answer:

The answer most likely would be x > -3

Step-by-step explanation:

It would be this because it's a opened dot and not a closed one. A closed dot would have the greater or less than sign with the line underneath it

REMEMBER if it is shaded to the right then the inequality points to the right (>).  If it is shaded to the left the inequality points to the left (<)

HOPE THIS HELPS

3 0
3 years ago
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