4. The average score of a statistics test for a class is 85 and standard deviation is 10.
Find the probability of a random score falling between 75 and 95

Answers

Answer 1

Answer:

ap e x

Step-by-step explanation:

66


Related Questions

HELP!!!! PLEASE!!!!
2x−1/15 = 7/3

Answers

Answer:

x=18/15, or 1[tex]\frac{1}{5}[/tex]

Step-by-step explanation:

Convert 7/3 into a fraction with denominator 15. Multiply both sides by 5 to get 35/15. Now, we add 1/15 to it to cancel out on both sides.

Our new equation is 2x=36/15

Divide by 2 on both sides

x=18/15, or 1[tex]\frac{1}{5}[/tex]

 [tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]

______________________________

 [tex]\bold{Solution~Steps:}[/tex]

[tex]1.)~Add~\frac{1}{15}~to~both~sides:[/tex]

[tex]\bold{\frac{7}{3}+\frac{1}{15}=\frac{35}{15} }[/tex][tex]\bold{Least~common~multiple~of~3~and~15~is~15.}[/tex]

        [tex]\bold{Convert~\frac{7}{3}~and~\frac{1}{15}~to~fractions~with~d.enominator~15.}[/tex]

[tex]\bold{\frac{35}{15}+\frac{1}{15}=\frac{36}{15} }[/tex][tex]\bold{Since~\frac{35}{15}~and~\frac{1}{15}~have~the~same~d.enominator,}[/tex]

         [tex]\bold{Add~them~by~adding\\~their~numerators.}[/tex]

[tex]2.)~Reduce~the~fraction~\frac{36}{15} :[/tex]

[tex]\bold{\frac{36}{15}=\frac{12}{5}}[/tex][tex]\bold{Reduce~the~fraction~to~lowest~terms~by~extracting~and~canceling~out~3.}[/tex]

[tex]3.)~Divide~both~sides~by~2:[/tex]

[tex]\bold{\frac{12}{5}}[/tex] ÷ [tex]\bold{2= ?}[/tex][tex]\bold{Express~\frac{12}{5}/5~as~a~single~fraction.}[/tex][tex]\bold{\frac{12}{5*2}}[/tex][tex]\bold{Multiply~5~and~2.}[/tex][tex]\bold{5}[/tex] × [tex]\bold{2=10}[/tex][tex]\bold{\frac{12}{10}}[/tex]

[tex]4.)~Reduce~the~fraction~\frac{12}{10}:[/tex]

[tex]\bold{\frac{6}{5}}[/tex][tex]\bold{Reduce~the~fraction~to~lowest~terms~by~extracting~and~canceling~out~2.}[/tex]

______________________________

 [tex]\bold{Answer:}[/tex]

[tex]\bold{Improper~Fraction~Form=\frac{6}{5}}[/tex][tex]\bold{Mixed~Number~Form=1\frac{1}{5}}[/tex][tex]\bold{Decimal~Form=1.2}[/tex]

______________________________

 [tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~~~-TotallyNotTrillex}[/tex]

Which set is a function?
A:{(0,3), (3,0), (0,4), (4,0)}
B:{(0,2), (2,0), (4,6), (6,4)}
C:{(2,6), (3,6), (4,6), (2,0)}
D:{(6,2), (2,0), (4,6), (6,4)}

Answers

Answer:

B

Step-by-step explanation:

could yall answer -4x-28>16

Answers

Answer:

x<-11

Step-by-step explanation:

What is the slope of the line -3x + 7y = 11

Answers

Answer:3/7
Y-intercept: (0,11/7)

Answer: m= 3/7

Step-by-step explanation: in y=mx+b form this equation is y=3/7 x + 11/7

simplifu the ratio : 25 dollars to 10 cents​

Answers

Answer:

150 cents: 1 cent

Step-by-step explanation:

We know every dollar has 60 cents so we can do

25*60=1500 cents

then our ratio becomes

1500:10

we can take away the zeroes

150:1

then their is your ratio

Graph the line with the equation y=1/4x-4​

Answers

Answer:

Step-by-step explanation:

The required graph of the line y = 1/4x - 4 is attached below that represents a straight line that slants upward from left to right,

To graph the line with the equation y = 1/4x - 4, we can use the slope-intercept form of a linear equation.

In the given equation, y = 1/4x - 4, we can identify the slope and y-intercept:

Slope (m) = 1/4

Y-intercept (b) = -4

The graph of the line y = 1/4x - 4 will be a straight line that slants upward from left to right, with a slope of 1/4 and crossing the y-axis at -4.

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Explain how an enlargement or a reduction In the dimensions of a building would cause a change in the scale factor

Answers

Answer:

The scale factor represents a proportional relationship between the scale drawing and the building’s dimensions. If the dimensions change, then the scale factor must also change to preserve the relationship.

Step-by-step explanation:

Hope it helps XD

Answer:

The scale factor represents a proportional relationship between the scale drawing and the building’s dimensions. If the dimensions change, then the scale factor must also change to preserve the relationship.

Step-by-step explanation:

Maurice has a house washing service that power washes houses on the weekends. He washed 4 small houses in 4 hour and 40 minutes last saturday. What was his average washing time per house? (Express your answer in hour & minutes per house)​

Answers

Answer: It should be one hour and 10 minutes for the average.

Step-by-step explanation: You would convert the 4 hours into minutes to get 240, then add the 40 to get 280. You would divide that by 4(for the number of houses) to get 70 minutes. Convert that into hours and minutes to get your answer.

It should be 1 hour and 10 minutes for the average! Hope this helps!

select all the numbers that round to 4.3 when rounded to the nearest tenth:

4.25; 4.24; 4.31; 4.352; 4.219; 4.305

Answers

Answer:

4.25; 4.31; and 4.305

Step-by-step explanation:

find the value of xxxxxxxxxxxxxxxxxxxx

Answers

Answer:

-7

Step-by-step explanation:

105=x+112

105-112=-7

April drove 168 miles and used 6 gallons of gas. At this rate how
far can she drive on a full tank of gas that holds 15 gallons of gas?

Answers

April would be able to drive 420 miles

Factor 45xy - 81y. If the expression cannot be factored, write cannot be factored.

Answers

Answer:

9y(5x−9)

Step-by-step explanation: Both 45 and 81's GCF is 9

The factors of the expression will be 9y(5x-9).

What are factors?

Factors are the numbers we can multiply together to get another number.

Given an expression, 45xy - 81y

45xy - 81y = 9y(5x-9)

Hence, The factors of the expression will be 9y(5x-9).

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A recipe calls for 4 cups of flour to 6 tablespoons of shortening. How many tablespoons of shortening are needed for 6 cups of flour?

Answers

8 tablespoons. hope this helped

ANSWER THIS QUICKLY PLEASE!!

Answers

I think the answer is C

$180 to $210 (percent change)

Answers

Answer:

14.29

Step-by-step explanation:

180*0.1429=210

what slope passes through (3,4) and (7,12)

Answers

Answer:

The equation would be y=2x-2 so slope would be 2

sorry if i'm wrong

help with this .. will mark brainliest

Answers

Answer:

B x= -9

Step-by-step explanation:

if you graph x equals negative 9 you always have a vertical line

Answer: b) x = -9

a) gives you a diagonal line when you graph it

b) gives you a vertical line since you only have the x-value, and it passes through the point (-9,10) when you graph it

c) gives you a horizontal line when you graph it since you only have the y-value

When a number is increased by 35, the result
is 38. What equation fits this statement?
А
x - 35 = 38
B
x + 38 = 35
X - 38 = 35
D
x + 35 = 38

Answers

D) X+35=38
the resulting meaning equal sign

Answer:

x+35=38

Step-by-step explanation:

the equation says results which is answer so now know the 38 is on the outside

35 is positive so x+35

At the Royal Dragon Chinese restaurant, a slip in the fortune cookies indicatos a dollar amount that will be subtracted from your total bill, A bag of 10 fortune cookies is given to you from which you will select one. If seven fortune cookies contain "$1 off," two contain "$2 off," and one contains "$6 off," determine the expectation of a selection.

Answers

Answer:

We can expect $1.7 off

Step-by-step explanation:

We are given 10 fortune cookies out of which

$1 off  = 7 cookies

$2 off = 2 cookies

$6 off = 1 cookie

Probability

A = drawing $1 off cookies    P(A) = 7/10

B= drawing $2 off cookies    P(B)  = 2/10

C= drawing $6 off cookie      P(B)  = 1/10

Expectation = 1*7/10 + 2*2/10+ 6*1/10

                    = 7/10  +   4/10  + 6/10

                    =  17/10 = $1.7 off

!I NEED HELP!Henrietta by 25 notebooks and 5 packs of pencils for her students. she also buys packs of pens. In total, Henrietta by 34 items. If notebooks, packs of pencils, and packs of pens are the only items that Henrietta purchases, how many packs of pants did Henrietta buy?

4

5

20

30

Answers

Answer:

She buys 4 packs of pens because 25 plus 5 is 30 and there is 4 leftover so the answer is 4

Step-by-step explanation:

Answer: 4

Step-by-step explanation:25 notebooks plus 5 pack of pencils is 30. she buys a total of 34 items so 34-30 equals 4

Divide the following numbers. 56 ÷ (-8) =

Answers

Answer: -7

Step-by-step explanation: Hopefully this helps have a blessed day!

Answer:

The answer is -7

Step-by-step explanation:

Complete the sentence.
If two triangles are congruent, then the six (blank) parts are congruent.​

Answers

Answer:

If two triangles are congruent, then the six Corresponding parts are congruent.​

Step-by-step explanation:

Answer:

Corresponding

Step-by-step explanation:

Add complex numbers
: (3 - 4i) + (6 + 7i)

Answers

Answer:those are complex I think?

Step-by-step explanation:

Daniel owes his sister $33. His sister said that she would give him a third off the debt. Write an expression that you could use to solve to find how much Daniel would owe his sister.​

Answers

Answer:

P=33-11

Step-by-step explanation:

given that Daniel owes her $33

a third of $33

is 1/3*33

=$11

now let the amount Daniel will owe her after giving her a third of the debt be P

therefore the expression to find how much Daniel owes her will be

P=33-1/3*33

simplifying the expression we have

P=33-11

P=$22

Daniel will owe her $22

Which is the answer to it

Answers

Answer:

um we cant hear the sound part so

Step-by-step explanation:

in a drug trial 25 participants had side affects on day 10 and 40 participants had side effects on day 30

Answers

Answer:

dang that looks hard

Step-by-step explanation:

What is the measure of angle NMB?
What is the measure of angle MND?
What is the measure of angle HGN?
What is the measure of angle AHG?
What is the measure of angle GNL?
What is the measure of angle HMN?
What is the measure of angle CGH?
What is the measure of angle AHJ?
What is the measure of angle JHM?
What is the measure of angle GNM?

Answers

Answer:

NMB = 102 degrees

MND = 78 degrees

HGN = 45 degrees

AHG = 45 degrees

GNL = 78 degrees

HMN = 78 degrees

CGH = 135 degrees

AHJ = 135 degrees

JHM = 45 degrees

GNM = 135 degrees

Step-by-step explanation:

Answer:

NMB = 102 degrees

MND = 78 degrees

HGN = 45 degrees

AHG = 45 degrees

GNL = 78 degrees

HMN = 78 degrees

CGH = 135 degrees

AHJ = 135 degrees

JHM = 45 degrees

GNM = 135 degrees

Step-by-step explanation:

10. Which of the following sets of numbers represents a Pythagorean
Triple?
A {10, 5, 12}
B {2,4,5)
C {1,2,3}
D {14, 48, 50 }

Answers

Answer:

D

Step-by-step explanation:

Trust me I used a calculator and and different one to make sure my answer was correct.

{14, 48, 50} represents a Pythagorean Triple, hence option (D) is correct.

If three sides of any triangle are a, b and c and c is the largest one then the condition that a, b and c will form a Pythagorean triplet is as:

c² = a² + b²  -----(1)

An option which will satisfy the condition (1) will form a  Pythagorean Triple.

Let's check for all the given options:

A) {10,5,12}

Since, 12 is the largest number out of three.

Therefore, c = 12, a = 5, b = 10

Now,

a² + b²  = 5²+10²

a² + b² = 25+100

a² + b² = 125

a² + b²≠ 15²

a² + b²≠ c²

Hence,  {10, 5, 12} will not form a Pythagorean Triple. Option (A) is incorrect.

B) {2,4,5)

c = 5, a = 2, b =4

a² + b² = 2²+4²

a² + b²  = 4+16

a² + b² = 20

a² + b² ≠ 5²

Hence, option (B) is also incorrect.

(C)  {1,2,3}

c = 3, a = 1, b = 2

a² + b² = 1²+2²

a² + b² = 1+4

a² + b²= 5

a² + b² ≠ c²

This is also not forming a  Pythagorean Triple, that is why incorrect.

(D) {14, 48, 50}

c = 50, a = 14, b = 48

a² + b² = (14)²+(48)²

a² + b² = 196 +2304

a² + b²  = 2500

a² + b²  = (50)²

a² + b²  = c²

This satisfies the condition (1) hence, it is forming a Pythagorean Triple.

This option is an  appropriate choice.

Hence, option (D) is correct, that means {14, 48, 50} represents a Pythagorean Triple.

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The time, t (in minutes), you need to type a
certain paper varies inversely with the rate,
(in words per minute), that you can type.
When typing 40 words per minute, you can
finish in 50 minutes. Find the constant of
proportionality and write an equation
relating t and r.

t =[?]/[?]

Answers

Answer:

2000/R

Step-by-step explanation:

I just did this problem and got it right

Find x if the angles are supplementary.

mL1 = 4x - 2

mL2 = 11x + 17

Answers

Answer:

11

Step-by-step explanation:

Supplementary means that the sum of the two angles equal to 180, so add the two measures and make them equal to 180. Add the two x's, subtract the two constants.

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