a student has answered 82% of the questions correctly in the examination. He made mistakes in 9 questions Calculate the toltal number of questions in the examination​

Answer:

x = 12

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define equation

2x + 8 = 32

Step 2: Solve for x

Step 3: Check

Plug in x to verify it's a solution.

Answer:

64 units

Step-by-step explanation:

divide the shape into two shapes:

first one: 15+15+4+4=38

second shape:7+7+6+6=26

pweimwter for the whole shape: 38+26=64 units

Answer:

The line of reflection is y=3

Step-by-step explanation:

Answer:

2/9 or 0.2 repeating

Answer: yessss

Step-by-step explanation: I hate math

Answer:

yall help me with this im solving by substition

Step-by-step explanation:

xy=4

2x-y+2=0

Answer:

5x+y=29

Step-by-step explanation:

You use the information that is given and convert it into point-slope form y-y1=m(x-x1) like so. y-4= -5(x-5). Then you solve for y and you get y= -5x+29 which is slope intercept form (y=mx+b). Then you transform it into Standard form (ax+by=c) so all you do is add 5 on both sides and you get 5x+y=29. Now you have found your solution.

If you can please make my answer the brainliest that would be much appreciated. Thanks!

Answer: we need a picture to solve this, please repost with a picture of your assignment

Step-by-step explanation:

Answer:

D.) 0, pi/2, pi 3pi/2

Step-by-step explanation:

Answer:

To me it looks like B

Step-by-step explanation:

RIP King Von

Answer:

1,3,4,5,6

Step-by-step explanation:

all the other answers to not have a definite end to them. rational numbers end

Answer:

y = 4x

Bowl 6 games cost $24

Step-by-step explanation:

Proportional Relationship

We have a situation where the cost y in dollars to spend an evening bowling is proportional to the number of games x bowled.

A proportional relationship is written with the equation:

y = k.x

The value of k will be determined by using the given information: 4 games bowled cost $16, thus:

16 = k.(4) = 4k

Solving:

k = 16 / 4 =4

Thus, the function is:

y = 4x

x=6 games bowled cost:

y = 4*6

y = $24

Bowl 6 games cost $24

Answer:

$300

Step-by-step explanation:

I did have an explanation here but someone *cough* *cough* laurenercsp6fpli  deleted all my answers for no reason. But I did the math and I assure you that the answer is $300.

Hey there!

7x + 3 - 4x - x

• First COMBINE your LIKE TERMS

(7x - 4x - x) + (3)

• x by itself is understood as an INVISIBLE ONE

(7x - 4x - 1x) =

(7x - 4x) = 3x

(3x - 1x) = 2x

➡️ 2x + 3

• Answer:

2x + 3

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Answer:

B, 3 and 5

Step-by-step explanation:

Answer:

3 and 5 for number 1, 1,4,5 and 8 for number 2

Step-by-step explanation:

Answer:

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

Step-by-step explanation:

Distribute 5 to 2x and 3y by multiplying each by 5

10x + 15y

Isolate y to one side of the equation

15y=-10x

Divide each side by 15

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

Answer:

5(2x + 3y) = 10x + 15y

Step-by-step explanation:

There is one particular way to find an equivalent expression which I am assuming is what the problem is looking for. When given a factored expression in the form of a binomial (two terms), by creating an equivilent expression, you can distribute the binomial inside the parenthesis factored by the coefficient 5. So 5(2x + 3y) = 5(2x) + 5(3y) = 10x + 15y.

5 is also the greatest common factor of 10x + 15y which is why this expression simplifies down to the equivilent expression 5(2x + 3y).

10x + 15y as a GCF is really the GCF of 10 and 15. What you do is individually split each number into all its possible factors(set of whole numbers that multiply to that number), and then find the factor that they both share.

For example, 10 has factors of 5, 2, 1, 10. And 15 has factors of 15, 1, 5, 3.

Notice how 5 appears in both.

Answer:

1. x = 16

2. x = 17

Step-by-step explanation:

1. The sum of the exterior angles of any polygon is 360 degrees. So, to find x, we can add up all of the angle measures and set them equal to 360, then solve for x:

46 + 93 + 47 + 4x + 62 + 3x = 360

Combine like terms:

248 + 7x = 360

Subtract 248 from both sides of the equation to isolate 7x:

7x = 112

Divide both sides by 7 to find the value of x:

x = 16

2. The sum of the interior angles for a 5-sided polygon is 540 degrees. So, to find x, we can add up all of the angle measures and set them equal to 540, and then solve for x:

5x + 139 + 9x + 71 + 92 = 540

Combine like terms:

14x + 302 = 540

Subtract 302 from both sides to isolate the 14x:

14x = 238

Divide both sides by 14 to find the value of x:

x = 17

I hope this helps :)

Answer:

C. The value of a is the number that the x-values are multiplied by to get to the corresponding y-values. So, a = 3.

Step-by-step explanation:

Given the points (5, 15) and (-5, -15) are plotted using the equation y = a•x, this shows a proportional relationship between y and x.

Thus using any of the points, say (5, 15), x = 5, and y = 15, thus:

a = y/x = 15/5

a = 3

Therefore, the value of a, which is 3, is the number that the x-values, 5 and -5, are multiplied by to get the corresponding y-values, 15 and -15.

As we can see, if we multiply each of the x-values by 3, it will give us their corresponding y-values.

Answer:

[tex]\dfrac{1}{5}\ L[/tex]

Step-by-step explanation:

It is given that,

A 2-liter bottle is filled completely with water from a faucet in 10 seconds.

We need to find how much water us filled in to the bottles each seconds.

In 10 s = 2 L bottle is filled

In 1 s, [tex]\dfrac{2}{10}\ L=\dfrac{1}{5}\ L[/tex] of water is filled into the bottles.

Answer:

The figure will result is cone ⇒ B

Step-by-step explanation:

When a right triangle is rotated about its vertical leg 360°, then it formed a cone its radius is the horizontal leg of the triangle and its height is the vertical lege of the triangle

In the given figure

∵ Triangle TRE is a right triangle

∴ The horizontal leg is RE

∴ The vertical leg is TR

∵ The triangle is rotated around the horizontal leg RE 360°

∴ It formed a cone its radius = TR and its height = RE

∴ The figure will result is the cone

Step-by-step explanation:

122 - 25

97

y= 8.5x + 25

97/8.50 <

11.4 --> 12

x < 12

Answer:

25 + 8.50w ≥ 122

Step-by-step explanation:

Given that:

Amount saved per week = $8.50

Cost of phone = $122

Starting amount = $25

Minimum Number of whole weeks (w) Sébastien will need to save :

Starting amount + (weekly saving * number of weeks) ≥ 122

25 + 8.50w ≥ 122

8.50w ≥ 122 - 25

8.50w ≥ 97

w ≥ 97/8.50

w ≥ 11.4117

Number of whole weeks = 12

Answer:

[tex]f\left(0\right)=\left(0\right)^2-4\left(0\right)=0-0=0[/tex]

[tex]f\left(1\right)=\left(1\right)^2-4\left(1\right)=1-4=-3[/tex]

[tex]f\left(2\right)=\left(2\right)^2-4\left(2\right)=4-8=-4[/tex]

[tex]f\left(3\right)=\left(3\right)^2-4\left(3\right)=9-12=-3[/tex]

[tex]f\left(4\right)=\left(4\right)^2-4\left(4\right)=16-16=0[/tex]

Step-by-step explanation:

Given the function

[tex]f\left(x\right)=x^2-4x[/tex]

Putting x=0 in the equation to find f(0)

[tex]f\left(x\right)=x^2-4x[/tex]

[tex]f\left(0\right)=\left(0\right)^2-4\left(0\right)=0-0=0[/tex]

Putting x=1 in the equation to find f(1)

[tex]f\left(x\right)=x^2-4x[/tex]

[tex]f\left(1\right)=\left(1\right)^2-4\left(1\right)=1-4=-3[/tex]

Putting x=2 in the equation to find f(2)

[tex]f\left(x\right)=x^2-4x[/tex]

[tex]f\left(2\right)=\left(2\right)^2-4\left(2\right)=4-8=-4[/tex]

Putting x=3 in the equation to find f(3)

[tex]f\left(x\right)=x^2-4x[/tex]

[tex]f\left(3\right)=\left(3\right)^2-4\left(3\right)=9-12=-3[/tex]

Putting x=4 in the equation to find f(4)

[tex]f\left(x\right)=x^2-4x[/tex]

[tex]f\left(4\right)=\left(4\right)^2-4\left(4\right)=16-16=0[/tex]

Answer:

if the question is how much he'll have by the end of the week, the answer is $920

The equation that models the given sstatement is  $1200 + 40x

Given the following parameters

Initial amount of money in bank = $1200

If he will deposit $40 per week from his paycheck,the amount of money he willhave at the end of x weekis given as:

Total = Iniital + 40x
Total .= $1200 + 40x

Hence the equation that models the given sstatement is  $1200 + 40x

Learn more on linear equation here: https://brainly.com/question/13729904

#SPJ2

Answer:

E

Step-by-step explanation:

here we have Angle S≅angle Q, then we have Side PS≅QR and then we have  again Side PR≅PR so we have A-S-S but there is NO theorem of congruency  that spells that word

Answer:

25.1

Step-by-step explanation:

4 is the radius and the diameter is twice the radius. The circumference is pi times the diameter. 3.14x8 is 25.12. Round that to the nearest tenth to get 25.1.

Answer:

2x7x13

Step-by-step explanation:

182 =  91 x 2

91 = 13 x 7

Answer:

y=2x+5

Step-by-step explanation:

Answer:

0.1 0.001 0.0001

Step-by-step explanation:

Answer:

67.2 hours

Step-by-step explanation:

Answer:

Step-by-step explanation:

67.2 hours are in 40% of a week.