MATHEMATICS HIGH SCHOOL

What vaule of b makes y=2x+b the same as y=2x?

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

hello :

y=2x+b the same as y=2x

y=2x means : y=2x+0    so : b=0

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The mean of a population being sampled is 64, and and the standard deviation is 6. If the sample size is 50, the standard error of the mean is . (Round off your answer to the nearest hundredth.)

Answers

Given:
mean = 64
standard deviation = 6
sample size = 50

Standard error of the sample mean = standard deviation / √sample size

Standard error = 6 / √50 = 6/7.07 = 0.85

Answer:

See image

Step-by-step explanation:

Plato

John worked for 8 weeks and earned $200. If he works five days per week, how much did he earn per day?

Answers

125$ divide it by 25 
John worked for 8 weeks at 5 days per week
so total no of days worked = 8*5=40 days
total revenue earned = $200
revenue / day = 200/40 = $5

The difference of 7 and a number n​

Answers

Answer:

7 - n

Step-by-step explanation:
the answer would be 7-n

1. Kim and Cyndi are starting a business tutoring students in math. They rent an office for $400 per month and charge $40 per hour per student. If they have 15 students each for one hour per week how much profit do they make together in a month? (assume 4 weeks per month)

Answers

$40 per hour
15 students per week
Each hourly student earns them $40 and there are 15 students, so this is multiplication.
40 * 15 = 600 per week
There are 4 weeks per month to earn 600 each week, this is again multiplication.
600 * 4 weeks = 2400 per month 
Out of their earned 2400 they must pay for their overhead, the building rent
2400 - 400 = 2000 profit 
They are left with $2000 between them.

Answer:

$4400

Step-by-step explanation:

$40 per hour

15 x 40 = 600

Because 'each' of them had 15 students, 600 x 2 = 1200  

There are 4 weeks per month to earn 1200 each week, this is again multiplication.

1200 * 4 weeks = 4800 per month  

Out of their earned 4800 they must pay for their overhead, the building rent

4800 - 400 = 4400 profit  

They are left with $4400 between them.

7. Find the circumference of a circle if the area is 300 square centimeters. A. 84.74 cm
B. 9.77 cm
C. 56.25 cm
D. 61.38 cm

Answers

So the formula for a circle is Pie * r^2
If you divide 300 by pie and then Square root it you would get your radius
And once you have the radius you would use the equation of 2pie * r to find the circumfrence. 
Answer is D. 61.38

Answer:

the correct answer is 61.38 cm, which is D


Step-by-step explanation:

Evaluate the numerical expression 2+(65+7) multiply 3=what

Answers

218 is the right answer
Your answer should be 218 because 65+7=72 then 72*3=216 then 216+2= 218
Hope i could help (:
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