Math club has a mean score on a standardized test of 85 with a standard deviation of 3. What is the probability of scoring below a 79 on the test?
2.5%
1
2.35%
.15%
2
2.65%

Answers

Answer 1

Answer:the second one

Step-by-step explanation:


Related Questions

Find the slope of the line through the given points:
(3, 5) and (-2, 7)

Answers

Answer:

slope is -2/5

Step-by-step explanation:

use y2–y1/x2–x1

Answer:

-2/5

Step-by-step explanation:

formula: y2-y1/x2-x1=

7-5/-2-3= -2/5

PLSSSSSS!!!! HELP ME I WILL MARK YOU!!!!!!! MATH!!!!!!!!!!!!!!

Answers

Answer:

-24

Step-by-step explanation:

-1(3^2)+(-15)

  -9+(-15)

      -24

Answer:

-24

Step-by-step explanation:

if n=-1, p=3, and q=-15, then the equation would be -1(3)^2+(-15)

Follow PEMDAS.

-1(3)^2+(-15)

-1x3^2-15

-1x9-15

-9-15

**-24**

hope this helps! : )

please answer all these math qestions QUICK DUE IN A HOUR PLEASE HELP !!!!!!!!!!!!!!! 1.A tablet was on sale for 7/8 of the original price. If the original price was $240, what was the sale price?
2.Christian's family went on a road trip. They stopped 9 times for gas. On average, they spent about 8 minutes at the gas station each time they stopped. On their trip, about how much time did they spend stopped for gas?
3.Lisa was late to class 12 times in the month of September. Each time she was late, she missed 3 1/2 minutes of class. How many minutes of class did she miss in the month of September?
4.Alexis hammered a nail into a piece of wood. Each time she hammered the nail, it moved 1/7inch. If she hammered the nail 14 times, how much did the nail move?
5.A 16.2 ounce box of Honey Nut Cheerios costs $4.86. How much did each ounce of the cereal cost, rounded to the nearest cent?
(please help answer all of these please all of these are due today at night ) (all of these are Rational Numbers Word Problems)

Answers

1. 210
2. 72 min
3. 42 min
4. 2 inches
5. I think $3.33
I hope this helps!

Answer:

1, 210.

2. 72 minutes.

3. 42 minutes

4. 2 inches.

5. 3 cents.

Step-by-step explanation:

1. First, divide 240 by 8, which will get you 30, now multiply 30 by 7 and you will get 210 which is your answer.

2.  Your keyword here is times. So you know you will multiply. So just multiply 8 and 9, and your product is 72, so 72 minutes.

3. Multiply 3 1/2 by 12, or convert your fraction to a decimal, which in decimal form is 3.50. Your product would be 42.

4. Multiply 1/7 by 14, you should get 14/7, which is an improper fraction. Divide 14 by 7 and you will get 2 inches.

5. So here you have to find the unit rate. Divide the price by the quantity.

4.86/16.2=0.297530865

Round the number up, which would be 3. So it would be 3 cents

Hope this helps :)

what is 63 times 4? pls help

Answers

Answer:

252

Step-by-step explanation:

Hope this helps

Answer:

252

Step-by-step explanation:

Hailey must make at least $200 in sales each week. So far this week, she has already made $60 in sales. How much more does she
need in sales this week (2) in order to meet her goal?

Answers

Answer:

140!

Step-by-step explanation:

200 - 60 = 140

Find the square root of the given numbers

1. 114
2. 625
3. 81
4. 729​

Answers

1- 12 (I think you ment 144)
2-25
3-9
4-27

Answer:

1. +/- 10.67707825

2. +/- 25

3. +/- 81

4. +/- 27

Help0oejelensb skeidnekendidne helps 10101

Answers

Answer:

b = (looks to be) -3.5

m = [tex]\frac{1}{2}[/tex]

Type of Slope = Positive, linear

Equation = y = [tex]\frac{1}{2}[/tex]x - 3.5

i will give u brainliest!

Answers

Answer:

(DOES NOT BELONG) Is Rational

(DOES NOT BELONG)  Is not Irrational

(DOES NOT BELONG) Is not an integer

(DOES NOT BELONG) Not a Whole

(DOES NOT BELONG) Not Natural

Step-by-step explanation:

This is a fraction with a square root.

Fractions:

Are Not Whole (square root cancels this)

Are Rational BUT since this has a square root, it is not.

Are not natural

Are not integers (Whole numbers that ARE NOT fractions)

So basically from what I have learned, square root cancels literally everything.

To get to work in the morning, Amanda cycles for 10 miles at the rate of 12 mph. She makes a 10 minutes stop for a cup of coffee, and then rides a bus for 15 minutes. The speed of the bus is 45 mph.

A)At what rate, in mph, would Amanda have to cycle to get to work by 9:45 am if she leaves her house at 8:30 am and she wants to have a coffee break that is 5 minutes longer than usual?

B)At what rate, in mph, would Amanda have to cycle to get to work by 9:45 am if she leaves her house at 8:30 am she wants to have a coffee break that is 10 minutes longer than usual?

Answers

Answer:

8:25 am

Step-by-step explanation:

Answer:

A. 13.33

b.15

Step-by-step explanation:

What are the solutions of x^2-2x+5=0? A. X=2i or x=-2i. B. X=1+2i or x=1-2i. C. X=2+i or x=2-i. D. X=2+2i or x=2-2i

Answers

Answer:

B. x=1+2i or x=1-2i.

Step-by-step explanation:

The equation is given as;

x²-2x+5=0

complete the square method to find value of x as;

x²-2x = -5

x²-2x + 1 = -5 + 1

x²-2x +1 =-4

( x-1 )² = -4

x-1 = ±√-4 ---------where √-1 = i

x-1 =± 2i

So;

x-1 = + 2i

x= 1+2i

or

x= 1-2i

x= 1-2i

plz help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

x=5

Step-by-step explanation:

7x-5=4x+10

3x-5=10

3x=15

x=5

Is it a function ?? (please help)

Answers

Answer:

No because there are not only 1 y value per x value

no there should only be one number per value.

What is the value of x in the equation
3x - 4y = 65:
when y=4?
Ox=13 1 / 2
x=21 1 / 3
X =23
O
x=27

Answers

x=27 because you plug y into the equation and solve for x

need help on finding the perimeter in feet​

Answers

Answer:

30 ft

Step-by-step explanation:

7.5 + 12.5 + 10 = 30 ft

Please help me help me

Answers

1). 1 1/3 • 1 1/2= 2 5/8
2) 80 • 3/5= 32
3)5 1/3 • 9= 48
4) 1 7/8 • 1/6= 15/48

What value of x makes this equation true? 2(4x-3) - 8= 4+2x​

Answers

Answer:

What value of x makes this equation true? 2(4x-3) - 8= 4+2x​  HERE YOU GO!!

Step-by-step explanation:

We need to eliminate one of the variables to solve the other.

 

4x+5y = 8

2x-3y = 18

I will multiply the second equation by -2.

 

-2*(2x-3y = 18)

-4x + 6y = -36 and then add the two equations

 

4x + 5y = 8

-4x + 6y = -36

+ adding here

11y = -24

y = -24/11

substitute x in one of the equations to find y.

2x-3y=18

2x - (3*-24/11) = 18

2x = 126/11

x = 126/22

(-5,4) and (1,6)
y-6 =? plz help me

Answers

Answer:

(-5,4) and (1,6) are cordanites on a graph 1st square is ++ 2nd is +- 3rd is -- and 4th is -+

Step-by-step explanation:

What is the value of x?

Answers

Answer:

10

Step-by-step explanation:

5x - 17 = 3x + 3 (vertically opposite angles)

5x - 3x = 3 + 17

2x = 20

x = 20/2

x = 10

hope it helps you!

Can ahhhh make what yeywywywy

PLEASE HELP LOTS OF POINTS I HAVE MADE THIS TWO TIMES GOT THE OTHER ONE TO GET 27 POINTS!

The sequence that proves shape I is similar to shape II when applied to shape I is a reflection across the x or y axes

, followed by a translation 4,5,6 or 7

units right and 2,3,4 or 5

units down, and then a dilation by a scale factor of 0.5 or 1 or 1.5 or 2

.

Answers

Answer:

-4 an -3 11 4 9

Step-by-step explanation:

Answer:

1) reflection across the x-axis

2) 7 units right

3) 2 units down

4) dilation by a scale factor of 2

Step-by-step explanation:

A system of equations can be written to represent coln and pricing problems. True or False.
O True
O False

Answers

I think it’s True. Look it up.

In efforts of improving their orofit margins, a company is considering creating their own manufacturing plant for their product. It had a start-up cost of 25,000 to build the plant. This plant will drop the production cost down to $15 per item. If each item sells for $50, then how many items would it take to get an overall profit of $100,000 for the year?

Answers

Answer:

To get an overall profit of $100,000, then 3,571 items is needed to be produced

Step-by-step explanation:

Mathematically;

Profit = Revenue - Production cost

In the question, we are told that the profit we are expecting is $100,000

Let the number of items to be produced for sales be x items

Now let’s look at the production cost ;

The production cost will be number of items for sale * production cost = 15 * x = $15x

Now, we need to add the start-up cost to the production cost to get the total amount spent on production;

Mathematically the total amount would be = $25,000 + $15x

Let’s look at the revenue;

The revenue will be selling price of each item * price of each item;

Mathematically, that would be 50 * x = $50x

So therefore;

50x - (25,000 + 15x) = 100,000

50x -25,000 -15x = 100,000

35x = 100,000 + 25,000

35x = 125,000

x = 125,000/35 = 3571.42 which is approximately 3,571 items

Miguel has $30. He spends $6.75 on a movie ticket, $3.65 for snacks, and $2.00 for bus fare each way.


How much money does Miguel have left? please help :}

Answers

Answer:

$15.60

Step-by-step explanation:

We can solve this problem easily by adding up Miguel's expenses, and then subtracting them from the amount he started with. Be careful, as he pays $4, not $2, in total for bus fare, because he is paying $2 to and from:

[tex]6.75+3.65+4.00[/tex]

[tex]=14.40[/tex]

Let's subtract our sum, [tex]14.40[/tex], from our total, [tex]30[/tex]:

[tex]30-14.40[/tex]

[tex]=15.60[/tex]

Miguel has $15.60 left.

The times for Erin’s five laps around the track were 56.6 seconds, 57.9 seconds, 57.5 seconds, 65.3 seconds, and 65.7 seconds. Using rounding to the nearest whole second as the only estimation technique, what is the total estimated time for Erin’s five laps in seconds?

Answers

Answer:

320 if u round the way I did u should get this answer. But please work it out on your own to get the how to do it faster and on your own

Step-by-step explanation:

60+60+60+70+70= 320

Answer: it’s 304.

Step-by-step explanation:

Hey, I need help with a math question. thank you <3

Answers

Answer:

B

Step-by-step explanation:

Solve mobiles plz help I’m confused

Answers

Answer:

Gold square = 4

Blue triangle = 3

Step-by-step explanation:

Red hexagon = 6, and there are 4 red hexagons.  So the total is 24.

Therefore, the total on the other side must also be 24.

That means the 4 blue triangles add up to 12, and the 3 gold squares add up to 12.

So each blue triangle is 3, and each gold square is 4.

Jules cut 2.75 inches from a metal rod. The metal rod is now 10.5 inches long. Which equation can be used to find the length of the metal rod before it was cut? Group of answer choices

Answers

L = 10.5 + 2.75

What are the answer choices?

Answer:

The solution for the equation 1,056=b+670

Step-by-step explanation:

10(6 + 4) ÷ (2³.7)² =​

Answers

Answer:

25/784

Step-by-step explanation:

(AICE MATH) i need help please

Answers

Answer:

How can i help?

Step-by-step explanation:

WHAT MOVIE HAS 7 THEATRICAL REALESES

Answers

Answer:

The meaning theatrical releases means the date a new movie is entered into the theater distribution system for public viewing. Alternate formats of the movie, such as DVDs, Blu-ray discs and video-on-demand, are scheduled for distribution a set number of weeks or months after the theatrical release. See video-on-demand. So if that is what it means then the movie i think that has 7 theatrical releases is the new movie "Mulan" because the people started making the movie on March 9th, 2020 and released the movie on September 4th, 2020. If i am incorrect i apologize

Hope this helps, have a great day and stay safe! :))))))))))))))

Which method can be used to prove that AJKL is congruent to AJML?
SSS
OHL
SAS
ASA

Answers

Answer:

it is SAS

Step-by-step explanation:

side angle side

triangle JKL is congruent to triangle JML

because they have two equal sides:

JL whitch is common in both of them and ML equal to KL

and the included angles are equal.

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