Fourteen students got a B on the last quiz. This represents 2/5 of the class. How many students are in the class?

Answer:

a) Circle

b) 7.816

c) 1000cm³

May I have Brainliest?

Hope that this helps!

Step-by-step explanation:

2x+7x-5=10

2x+7x= 10+5= 15

2x ×9=15

2x =15-9=5

x=5/2=2.5

Answer:

This ratio is not proportional. (๑・ω-)～♥”

Answer:

13

Step-by-step explanation:

Once again we are looking at inscribed angles and intercepted arcs. Like stated previously an inscribed angle is equal to half its intercepted arc

That being said we want to create an equation to solve for x

The equation would be 7x + 5 = 192/2

We now solve for x

step 1 simplify

192/2=96

now we have 7x + 5 = 96

step 2 subtract 5 from each side

5 - 5 cancels out

96 - 5 = 91

7x = 91

step 3 divide each side by 7

7x/7 = x

91 / 7 = 13

we're left with x = 13

Answer:

Step-by-step explanation:

You have the right answer

========================================================

Work Shown:

p = number of items sold

855 = cost per item

855p = total revenue = total amount of money earned

6780 = total expenses

profit = revenue - expenses = 855p - 6780

profit = 855p - 6780

------------------

Now plug in p = 250

profit = 855p - 6780

profit = 855*250 - 6780

profit = 213,750 - 6,780

profit = 206,970 dollars

This is the profit the company makes in one month if p = 250 items are sold.

The CEO earns 15% of this profit, so,

15% of 206,970 = 0.15*(206,970) = 31,045.50

The CEO earns $31,045.50

Answer:

As slope is found by and our points are ( ) ( ) for the minimum and maximum heights, respectively, we can reason that the slope of the best fit line should be While this is by no means a perfect slope, it does provide us with a good estimate for the actual slope of the best fit line.Using the information, our equation has only one more variable ...

Step-by-step explanation:

Answer:

-1

Step-by-step explanation:

y=mx +c

y= -4X + c

7 = -4 x -2 + c

7= 8 + c

7-8 = c

-1 = c

Answer: 5 5/7

Step-by-step explanation:

Number of pizza bought = 20

Fraction of pizza ate = 2/7

Therefore, the number of pizzas that have been eaten will be:

= Fraction of pizza eaten × Number of pizza bought

= 2/7 × 20

= 40/7

= 5 5/7

Therefore, 5 5/7 pizza have been eaten

Answer:

It's A.

Step-by-step explanation:

I got it right

Answer:

C

Step-by-step explanation:

Answer:

I'm sorry I don't know ‍♀️

Answer:

b

Step-by-step explanation:

Answer:

See attached image!

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

I don't know how to explain this other than use a calculator.

Hope that this helps!

Answer:

171.125

Step-by-step explanation:

Answer:

2035

Step-by-step explanation:

Volume of a cylinder is 3.14 multiplied by the radius squared times height so

[tex]v =\pi \times r {}^{2} \times 18[/tex]

3.14*36*18

2034.75 rounded to 2035 cm

[tex]2035 {cm}^{3} [/tex]

Answer:

y=1/2x+3.5

Step-by-step explanation:

look at any part of your slope where it crosses through a point: now go up your slope until you find the next point that the slope intersects. from your first point A, go up, then over until you reach point B. you just found your fraction for m. congrats

Answer:

D.0

Step-by-step explanation:

If you graph the equation you can see that it doesn't cross the x-axis. It doesn't go lower than y=1. If you don't have a graphing calculator use Desmos. Also the +1 at the end of the equation tells you that it won't go lower than y=1.

Answer:

Never your answer is 0

Step-by-step explanation:

The equation creates what's called a parabola the line curves up the 1 represents the y axis so the line curves up from the y axis point 1 never touching the x axis

here's a graph to prove it also Brainiest?

Answer:

19

Step-by-step explanation:

i took the quiz

Answer:

6.9 cm

Step-by-step explanation:

hyp² = adj² + opp²

Answer:

x = 6.93 cm

Step-by-step explanation:

Pythagorean theorem: c = [tex]\sqrt{a^2 + b^2}[/tex]

C is the hypothenuse, the longest side of a right angled triangle.

Here c = 8, 4 =a, b = x.

[tex]8 = \sqrt{(4)^2+(b)^2}[/tex]

[tex]64 = (4)^2 + (b)^2[/tex]

[tex]64 = 16 + (b)^2[/tex]

[tex]b^2 = 48\\b = \sqrt{48} = 6.93 cm[/tex]

Answer:

3/700

Step-by-step explanation:

Let

x = the quantity

3/7% of x

= 3/7 ÷ 100 * x

= 3/7 × 1/100 * x

= (3*1)/(7*100) * x

= 3/700 * x

= 3/700x

3/7​% of a quantity = 3/700 of the quantity

Answer:

The space remaining in the truck is 1,276 cubic feet

Step-by-step explanation:

Given that the dimensions of the haul of the moving truck are;

The length of (the haul) of the moving truck = 16 feet

The width of (the haul) of the moving truck = 10 feet

The height of (the haul) of the moving truck = 8 feet

The number of boxes in the truck = 2 boxes

The dimensions of the boxes in the truck = 2 feet cubes

From the given dimensions, we have;

The volume of the boxes, [tex]V_{boxes}[/tex] = 2 ft.³ + 2 ft.³ = 4 ft.³

The volume of the haul, [tex]V_{haul}[/tex] = 16 feet × 10 feet × 8 feet = 1,280 ft.³

The amount (volume) of space remaining, V = [tex]V_{haul}[/tex] - [tex]V_{boxes}[/tex]

∴ V = 1,280 ft.³ - 4 ft.³ = 1,276 ft.³

The amount of space remaining, V = 1,276 ft.³

Answer:

$ 10.50

Step-by-step explanation:

we can use a proportion to answer this question

25 : 100 = x : 7

x = (25 * 7)/100 = $1.75 (value of the discount)

Final price = 7 - 1.75 = $5.25

she bought two = 5.25 x 2 = $10.50

Answer:

If both pumpkins are 7 dollars in total than it would be 5.25 if its 7 dollars each and a discount on each it would be 10.5

Step-by-step explanation:

Answer:

The probability that he will pull out a yellow block it 1/4.

Step-by-step explanation:

There are 4 blocks in the bag, each a different color. Since there is only one yellow out of 4 different blocks, the fraction would be 1/4.

Hope this helps!

Answer:

the valu of x is 21 degree.

9x-22=167 degree

5x-7=98 degree

arc HGJ=159 degree

arc GKJ=201 degree

Step-by-step explanation:

Hope it helps you!!

Answer:

The last expression.

Step-by-step explanation:

The last expression is not a polynomial because x is in the denominator of the second term.

Answer:

[tex]4x^2+\frac{5}{x} -6[/tex]

Step-by-step explanation:

A rule for polynomials, is that if they have variables, the powers should be positive whole numbers. Basically, this means you cannot divide by a variable, but in option 4, second term, you are dividing 5 by x, which is the same as[tex]5*x^{-1}[/tex]. This means you are not raising the variable to a positive power, which means the whole 4th option is not a polynomial.

Answer:

191 Feet.

Step-by-step explanation:

Answer: Your answer should be 191!

Answer:

(-2, -1).

Step-by-step explanation:

y = x² + 4x + 3

Completing the square:

y = (x + 4/2)^2 - (4/2)^2 + 3

y = (x + 2)^2 - 4 + 3

y = (x + 2)^2 - 1.

This is vertex form and the coordinates of the vertex are (-2, -1).

Answer:

16

Step-by-step explanation:

Answer:

V = 144 cm^3

Step-by-step explanation:

V = (lwh)/3

V = (8 x 6 x 9)/3

V = 144 cm^3

Answer:

Cuando María afirma que si unen sus dos cuartos de cartulina obtendrán el medio pliego que necesitan, esto es:

Step-by-step explanation:

Para entender mejor el ejercicio vamos a utilizar números cada vez que se habla de cantidades de cartulina, por lo tanto, María y Juan tienen 1/4 de cartulina cada uno, es decir, 1/4 * 2, y necesitan 1/2 pliego para poder realizar su tarea, por lo tanto, con la afirmación de María sobre unir los dos cuartos de cartulina, en caso de que sea verdadero, ocurrirá que la suma de los dos cuartos dará el medio pliego, como se muestra a continuación:

Procedemos a simplificar el fraccionario obtenido, sacando mitad tanto en el numerador como en el denominador:

Como puedes ver al final, la cantidad de cartulina de ambos, al ser sumada, da como resultado el 1/2 (medio) pliego que necesitan para su tarea de sociales, por lo cual la afirmación de María es correcta.

Answer:

1 : 15

2: 12

3: 52

4: 27.3

Step-by-step explanation:

For #1:

if line m and n are perpendicular then they will create right angles

Right angles have a measure of 90 degrees

That being said we can find the measure of the missing angle by subtracting the measure of the known angle (75) from 90

so k = 90 - 75

90 - 75 = 15

Hence k = 15.

For #3 ( very similar to #1, only difference is the values of the angles )

so R = 90 - 38

90 - 38 = 52

Hence, R = 52

For #2 and #4

Complementary angles have a sum of 90°

So like the previous questions we can find the measure of the missing angle by subtract the measure of the given angle from 90

∠V = 90 - 78

90 - 78 = 12

Hence ∠V = 12

∠Y = 90 - 62.7

90 - 62.7 = 27.3

Hence ∠Y = 27.3