The scores on an exam are normally distributed, with a mean of 73 and a standard deviation of 5. What percent of the scores are less than 78?
16%
84%
50%
135%

Answers

Answer 1

Answer:im sorry

Step-by-step explanation:


Related Questions

Al is employed on an assembly line. He receives 35 cents for each part that he works on. If he works on more than 150 parts, his employer will pay him 40 cents for each part over 150. Yesterday, Al worked on 1,000 parts. How much did he earn?

Answers

Answer:

392.50

Step-by-step explanation:

1,000-150=850

850 x .40 = 340

150 x .35 = 52.5

340 + 52.5 = 392.50

Answer:

$268

Step-by-step explanation:

I got 100% on the quiz

Steve leaves his cabin and walks 32 km due south. He then turns and walks 24
km due east. How far does Steve have to walk to return directly to the cabin?

Answers

28 is the least amount he will have to walk

Jane made $288 for 18 hours of work. At the same rate, how much would she make for 11 hours of work?

Answers

Answer:

176$

Step-by-step explanation:

Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative.) f(x) = (x + 3)(2x − 2)

Answers

Answer:

2x³/3 +2x²-6x+C

Step-by-step explanation:

Given the function

f(x) = (x + 3)(2x − 2)

Expand first

f(x) = 2x²-2x+6x-6

f(x) = 2x²+4x-6

Integrate the resulting function

Integrate (2x²+4x-6) =2x³/3 + 4x²/2 - 6x + C

= 2x³/3 +2x²-6x+C

For us to check the correctness, we need to differentiate the answer and we must arrive back at the question

On differentiating 2x³/3 +2x²-6x

3(2/3)x² + 2(2)x¹ -6

= 6/3x²+4x-6

= 2x²+4x-6

This shows the answer is correct.

The correct anti derivative of the function is 2x³/3 +2x²-6x+C

Solve for p.
P=?
12 = p
11 12

Answers

Answer:

p = 144/11

Step-by-step explanation:

12/11 = p/12

~Simplify

12/11 = 1/12p

~Multiply 12 to both sides

144/11 = p

Best of Luck!

47,52,57,62
what's next?​

Answers

Answer:

67,72,77, etc.

Step-by-step explanation:

You just add 5 each time to your number.

Answer:

67,72,77,82,87,92,97,102,107

Step-by-step explanation:

you add 5 each number

the area of square base of a water tank is 4m² and the height of the tank is 2.5m. find the capacity of the tank.in litre​

Answers

Answer:

10000L

Step-by-step explanation:

Given parameters:

Area of square base  = 4m²

Height of tank  = 2.5m

Unknown:

Capacity of tank  = ?

Solution:

The capacity of the tank is the volume of tank;

 Volume of the tank  = base area x height

Insert the parameters and solve;

 Volume of the tank  = 4 x 2.5  = 10m³

Now convert m³ to Litre;

    1m³  = 1000L

   10m³ will be 10 x 1000 = 10000L

I need help for this question pllsssss

Answers

Answer/Step-by-step explanation:

7. ✍️First Equation:

To generate the equation of the gray, which will be in the slope-intercept form, y = mx + b, we need to find the slope of the graph, m, and the y-intercept, b.

Using two points on the line, (2, 4) and (4, 0),

[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 4}{4 - 2} = \frac{-4}{2} = -2 [/tex]

Substitute x = 2, y = 4 and m = -2 into y = mx + b, to find the value of b.

thus:

4 = (-2)(2) + b

4 = -4 + b

Add 4 to both sides

4 + 4 = b

b = 8

Substitute m = -2 and b = 8 into y = mx + b.

The first equation would be:

✅ y = -2x + 8

✍️Second Equation:

Using two points on the line, (1, 6) and (5, -2),

[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-2 - 6}{5 - 1} = \frac{-6}{4} = -\frac{3}{2} [/tex]

Substitute x = 1, y = 6 and m = -³/2 into y = mx + b, to find the value of b.

thus:

6 = (-³/2)(1) + b

6 = -³/2 + b

Add ³/2 to both sides

6 + ³/2 = b

(12 + 3)/2 = b

15/2 = b

Substitute m = -³/2 and b = 15/2 into y = mx + b.

The second equation would be:

✅ [tex] y = -\frac{3}{2}x + \frac{15}{2} [/tex]

What is 3/4 divided by 1/2

2/3

1
1 1/4

1 1/2

3

Answers

3/4 divided by 1/2 is 1 1/2
The answer is 1 1/2 fhchhdhb

What is one element a topographic map shows?

Air flow
Climate
People
Relief help me pls

Answers

Answer:

air flow?

Step-by-step explanation:

Step-by-step explanation:

Topographic Mapping Elements for Digital Map Products

contour lines.

contour related text.

spot elevations.

spot elevation related text.

according to this i think b) climate is the answer

Heeeeelllpppp
-6xy^5 - 15x^4 + 9x

Answers

Answer:

-3x(2y^5+5x^3-3)

Step-by-step explanation:

-6xy^5 - 15x^4 + 9x

-6xy^5-15xx^3+9x

2*3xy^5+5+3xx^3z+3*3x

Factor:

-3x(2y^5+5x^3-3)

HELPPP!!!!! I WILL GIVE BRAINLIEST

Answers

Answer:

reflexive property

Step-by-step explanation:

Answer:

reflexive

Step-by-step explanation:

There are many properties of exponents. These properties are used to make problems with exponents simpler. 1] Choose one of the properties and explain why it isbtrue. Then write a numerical expression and use the property you chose to simplify the expression.​

Answers

a^m × a^n = a^(m+n)

means that when you take a number, a, multiplied by itself m times, and multiply that by the same number a multiplied by itself n times, it's the same as taking that number a and raising it to a power equal to the sum of m and n.

To prove this, we can verify it numerically:

Let us take,

a = 10

m = 2

n = 5

Now,

10² × 10⁵ = 10²+⁵

100 × 100000 = 10⁷

10000000 = 10000000

Another example,

Let us take,

a = 2

m = 0

n = 3

Now,

2⁰ × 2³ = 2⁰+³

1 × 8 = 2³

8 = 8

What is the percent of change if 18 is increased to 45?

Answers

45 - 18 = 27, and 27/18 = 1.5.

So 45 is a 150% increase from 18.

PLEASEEE HELP PICTURE ABOVEEE ASIWNS ASAP

Answers

Answer:

B

Step-by-step explanation:

Solve the inequality for n to find out how many necklaces she needs to sale to make a profit 12n>135+4.50n

Answers

Answer:

n>18

I looked it up on tiger math and I i got the answer right HOPE THIS HELPS!!!!

A rectangular painting's width is 6 less than twice its length.
Given that the perimeter of the painting is 84 inches, select all statements that are true.

Answers

Answer: Paintings length is 16, width is 26, area is 416 square inches.

how do i use what i know about adding integer to add rational numbers

Answers

Answer:

Rational number are any number that can be made into a fraction and since integers are a type of rational number you can use that to solve your math problem.

Step-by-step explanation:

(This might not be a good explanation but I hope you understand what I am trying to say here)

Hope this helps :)

Hey, we are doing a review but I forgot how to set up proportions. Please help me!!​

Answers

It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five." In problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion.

20/25 = 4/5

20 x 5 = 25 x 4

100 = 100

Nidhi is facing the garden. She makes a 3/4 turn anticlockwise. She is facing _________ now

Answers

Answer:

to the right side of where she was facing

Step-by-step explanation:

If A4BC - AAVW, find the values of x and y.

Answers

Look it up on the internet x and y

16 points I need help !!!!!!!!!!!!!!!!!!!!!!!!!!!Which points are plotted correctly on their accompanying number line? Check all that apply.
Point: Negative StartFraction 7 Over 8 EndFractionA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 1 mark to the right of negative 1.
Point: Negative one-halfA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is half-way between 0 and 1.
Point : Negative one-fourthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative one-eighthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative 1 and three-fourths A number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative 1 and one-fourth A number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A mark is 2 spaces to the left of negative 1.

Answers

Answer:

d f i think

Step-by-step explanation:

Answer:

The correct answer is A, D, and F.

Step-by-step explanation:

-7/8, -1/8, and -1 1/4

If P = {1, 3, 6, 7, 9} and Q = {1, 2, 4, 5, 6, 7, 8}, find P ∪ Q.

Answers

d
d
d
d
d
d

d
d
d
d that is the answer
ok
ok
that’s all ok
a
a

a
as
a


a
a
a
a
a
a
a

Jill worked five hours less than three times the number of hours that Karen worked. Which of the following equations represents the relationship between j, the number of hours that Jill worked and k, the number of hours that Karen worked?

Answers

Answer:

k x j5=x

Step-by-step explanation:

PLEASE HELP!!! URGENT!!!!​

Answers

Answer:

80 degrees

Step-by-step explanatibecause its congruent to a suplementary angle

the size of angle x is 80.

reason:
angle CBD and ABC are a linear pair. this means u have to do 180-100, which is 80. angle ABC becomes 80 and since angle x and angle ABC are corresponding angles, this makes them congruent to each other. which means angle x is 80

Help please...............

Answers

Make two boxes, each box has 101 tickets in each box and the relationships are 101 each box that’s the answer

pls help and tell me what goes where!

Answers

d- 2000
c-120
b-250
A- 30
25 times 56 is 1400

PLEASE HELP ILL MARK BRAINLIEST

Answers

Answer:

y=x-3

Step-by-step explanation:

7th grade math help me pleasee

Answers

Answer:

Step-by-step explanation:

a. (-6/2)*(1/3)*(36/2)=-18; b. (125/100)*(-2/2)

A magazine subscription costs $29.88 for 12 issues or $15.24 for 6 issues. Which subscription costs more per issue? How much more? *

Answers

Answer:

The magazine that cost $15.24 for 6 issues cost more by $0.60/60 cents.

Step-by-step explanation:

Since $15.24 is 6 issues each and you need to even out the issues add $15.24+$15.24 then you would get $30.48, because its 15.24 each 6 add them both and it would be 12 issues. And the first issue $29.88 for 12 issues is  only $29.88 while the other is $30.48 so the one with 6 issues/the second cost more than the first.

60 cents more because 29.88+60=30.48.

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