solve the following problems:
in Mrs. Pregonero Math class, 12 pupils got high scores on thw test . if this is 15% of the total number of pupils in the class, how many pupils she have in all?

Answers

Answer 1

Answer:

Step-by-step explanation:

tey to analyze the problems


Related Questions

8) A school community had planned to reduce the number of grade 9 students per class room by constructing additional class rooms. However, they constructed 4 less rooms than they planned. As the result, the number of students per class 10 more than they planned. If there are 1200 grade nine students in the school, determine the current number of class rooms and the number of students per class.​

Answers

Step-by-step explanation:

Let "c" be the original number of classrooms.

The 1200/c was the original number of students per classroom.

----

Equation:

1200/(c-4) = (1200/c)+10

Multiply thru by c(c-4)

---

1200c = 1200(c-4)+10c(c-4)

---

1200c = 1200c-4800 + 10c^2-40c

----

10c^2-40c-4800 = 0

c^2-4c-480 = 0

Factor:

(c-24)(c+20) = 0

---

Positive solution:

c = 24 (# of classrooms originaly planned)

Find the solution of the system of equations.
3x – 3y = 18
3x – 8y = -2

Answers

Answer:

x=10, y=4

Step-by-step explanation:

3x-3y=18

(-)3x-(-)8y=-(-)2   -3x+8y=2   add to first equation to eliminate x

5y=20

y=4

substitute y with 4

3x-3(4)=18

3x=30

x=10

x=10,y=4

What’s the formula for the series -5,10,-20,40

Answers

Answer:

Stare at it long enough. You will notice that with each step you double the value, and change sign. It makes it a geometric sequence of ratio -2. At this point you have two ways of writing down:

Option 1: Ricorsively, the first term is -5, then the next term is -2 times the previous one:

[tex]\left \{ {{a_0=-5} \atop {a_{n+1}=-2a_n}} \right.[/tex]

Option 2: In closed form, remembering that the n-th term in a geometric sequence is the starting term times the n-th power of the ratio:

[tex]a_n=-5 (-2)^n[/tex]

Either work, depending on what you need to use it for.

Below the function h (x) ang g (x) are graphes. At which values of x is true that h (x) > g (x)? Select all that apply.

Answers

Answer:

25

Step-by-step explanation:

At x = 10 and 31 the value of the function h(x) is greater than g(x) thus options (A) and (D) are correct.

What is a function?

A certain kind of relationship called a function binds inputs to essentially one output.

The machine will only accept specified inputs, described as the function's domain, and will potentially produce one output for each input.

As per the given graph of the function,

At x = 10 the h(x) > g(x)

At x = 31 the h(x) > g(x)

Hence "The value of the function h(x) is bigger than g(x) at x = 10 and 31".

For more about the function,

brainly.com/question/23712366

#SPJ2

solve for X:
10( x + 1) = 2 x-7
-1
-3
-17/8
-18/8

Answers

-17/8

Step-by-step explanation:

10( x + 1) = 2 x-7

10x + 10 = 2x - 7

10 + 7 = 2x - 10x

17 = - 8x

x = -17 /8

Answer:

Hiya There....!!!

______________________

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x  =  − 17 /18

Decimal Form:

x  =  − 2.125

Mixed Number Form:

x  =  − 2/ 1 8

_______________________

“To forgive is wisdom, to forget is genius. And easier. Because it's true. It's a new world every heart beat.”

― Joyce Cary, The Horse's Mouth

__________________________

Think of life as a mytery because well it sort of is! You don't know what may happen may be good or bad but be a little curious and get ready for whatever comes your way!! ~Ashlynn

The low temperature on a certain day is 56°F. The low temperature is 14°F lower than the high temperature, h.

Which equation can be used to find the high temperature for that day?


56=h−14

56 = 14h

56 = h + 14

h + 56 = 14

Answers

Answer:10.9

Step-by-step explanation:

Please solve of r in the problem int the photo

Answers

[tex]r = \sqrt{\dfrac{3V}{\pi h}}[/tex]

Step-by-step explanation:

Multiply both sides by 3 to get

[tex]\pi r^2h = 3V[/tex]

Then divide both sides by [tex]\pi h[/tex] and you'll get

[tex]r^2 = \dfrac{3V}{\pi h}[/tex]

To solve for r , you need to take the square root of both sides to get

[tex]\sqrt{r^2} = r = \sqrt{\dfrac{3V}{\pi h}}[/tex]

A total of 180 students and 35 chaperones are going on a field trip to the Smithsonian Institution in Washington, D. C.

Write the ratio in simplest form.


the ratio of students to people on the trip ​

Answers

Answer:

36 : 43

Step-by-step explanation:

So, we have 180 : 35 + 180 in the students to people on the trip180 : 21536 : 43Therefore, the ratio of students to people is 36 : 43

Pleaze help brainlyest

Answers

Okay I will help brainlyest

The notebook shows the money Lyla earned and spent over two days. A positive number represents money earned. A negative number represents money spent.

Answers

Answer:7 + (-5)= 2

Step-by-step explanation:

7 + (-5)= 2 i hope its right'

A salesperson earns a commission of $308 for selling $ 2200 in merchandise. Find the commission rate.

Answers

Answer:$247

Step-by-step explanation

Jack has 8 out of 10 questions correct. He said that he earned a 75% on his exam. Is he correct? Show why he is correct or incorrect.

Answers

Answer:

He is incorrect. He actually got an 80%

Step-by-step explanation:

[tex]\frac{8}{10}[/tex] = 80%

I hope this helps!

points frreeeeeeeeeeeee :)

Answers

Answer:

thx m8

Step-by-step explanation:

:)

Answer:

No idea but ok

The triangle and rectangle belowhave the same area what is the value of w?

(I[m Assuming W =10cm)

Answers

the formula for area of a triangle is 1/2 times the base (4 cm) times the height (5 cm) so the area of the triangle would be 10 cm. to find the area of the rectangle you would divide 10 by 4, which means that w=2.5 cm

What is this word phrase as a math expression? 4 times the sum of a number and 11
1 point
4(x + 11)
4x + 11
4 + (x + 11)
4x + 11 x

Answers

Answer:

i think that the correct answer is 4x+11

squared root of -100 =

Answers

10 i I hope this help

Step-by-step explanation:

Please this is a wrong question. If you mean square root of 100 then it's 10. As for -100, it's an error.

Can anyone please help me answer this Math question ? As soon as possible !


The We-Make-It factory in the United States pays its 250 workers an average of $21 per hour, including benefits. The average number of work hours per employee in a year is 1,924. The owners of the factory are considering relocating overseas to a country where they can pay workers an average of $6 per hour, including benefits, to achieve the same production levels. Assuming that the company would hire the same number of workers for the same number of hours in a new location, how much could We-Make-It save in wages alone in the first year by moving to the proposed overseas location?

Answers

Assuming that this would not be destroying the lives of many in a community by locating overseas. The factory would save $2,886,000 in payroll wages during the first year of relocation.

Step-by-step explanation:

$15 saved in wages/working hour × 250 workers × 1924 hours per year/worker = $2,886,000

In a randomly generated list of numbers from 0 to 4, the chance that each
number can occur is 1/5? True or false

Answers

true. you can get 5 digits. 0, 1, 2, 3, 4, or a 5.

help help help help math math

Answers

Answer:

[tex]2916^3\\[/tex]

Step-by-step explanation:

As the formula is [tex]\frac{4}{3}\pi \cdot r^3[/tex]

But we take [tex]\pi[/tex] as 3 so it would be [tex]\frac{4}{3}3\cdot r^3[/tex]

And the radius is 9 half of Diameter

We would write it like this

=  [tex]\frac{4}{3}3\cdot 9^3[/tex]

Then when we solve it would become [tex]2916^3\\[/tex]

I hope this helps :)

What is the exponential expression for the numerical expression 6·6·6·6·6? ​ 5·6^5​ 5^6. ​6^5. 30^5​



32 POINTS

Answers

The answer should be 6^5

CAN YOU PLS HELP MEEEE

Answers

Answer:

10x−2y

Step-by-step explanation:

Just ask!

Hope this helps. :)

[tex] \: \: \: \: \: \: [/tex]

[tex]10x - 2y[/tex]

Step-by-step explanation:

[tex]8x - 2y + x + x[/tex]

Collect like terms

[tex] = \: \: \: \: 10x - 2y[/tex]

hope it helps

3 2/3 + 2.3 =

5
5 2/3
6
6 1/3

Answers

2.3 is the same as 2 1/3 is the same as 7/3

3 2/3 is the same as 11/3

11/3+7/3=18/3

18/3=6

Answer:6

Tesses ging for a maik. She waiks 125 miles in 5 hours. What is her speed?

Answers

Answer:

25 miles/hour

Step-by-step explanation:

If you were to divide 125 by 5, you would get 25 miles per each hour as your answer. Brainless if I am correct.

Work out the area of the shaded shape. Need answer ASAP

Answers

Answer:

Step-by-step explanation:

A = 3(6) + 2(5 + 3 + 2) = 38 m²

are Proportional and non-proportional equations are all linear.

Answers

Proportional and linear functions are very similar. The only difference is the addition of the “​b​” constant to the linear function. A proportional relationship is just a linear relationship where ​B​ = 0, or where the line passes through the origin (0, 0).

If (2a+b,11) and (1, a-3b) are equal ordered pair then (a,b) = ______.​

Answers

Given that

(2a+b,11) and (1,a-3b) are equal ordered pair

⇛(2a+b,11) = (1,a-3b)

On comparing both sides then

2a+b = 1 ----------Eqn(1)

11 = a-3b

⇛ a-3b = 11 ------Eqn(2)

⇛ a = 11+3b-------Eqn(3)

On substituting the value of a in Eqn(1) then

⇛ 2(11+3b) + b = 1

⇛(2×11)+(2×3b) + b = 1

⇛ 22 +6b+b = 1

⇛ 22+7b = 1

⇛ 7b = 1-22

⇛ 7b = -21

⇛ b = -21/7

⇛ b = -3

On substituting the value of b in Eqn(3) then

⇛ a = 11+3(-3)

⇛ a = 11-9

a = 2

Therefore, a = -3 and b = 2

Answer:-The value of (a,b) for the given problem is (-3,2).

Find the value of the function sin Find the value of the function sin 310 a. –0.766044443119 c. 0 b. 0.850887688656 d. 0.003225800857

Answers

Answer:

  b. 0.850887688656

Step-by-step explanation:

Unless the argument of the sine function is specified in degrees or some other angle unit (revolutions, grads, minutes, seconds), it must be assumed to be radians. Here, the argument 310 is not shown as 310°, so we must assume it is 310 radians.

  sin(310) ≈ 0.850887688656

__

Additional comment

  sin(310°) ≈ –0.766044443119

A radian is dimensionless, indistinguishable from a pure number.

Ignore blue circles pls help guys!!

Answers

Answer:

y = 40 , 32 , 56 , -32 , -72

Step-by-step explanation:

Plug your x into your equation for the answer.

Brainliest would be appreciated. :-)

Pls look at the picture for question.

Answers

Answer:

Only option A is correct

Step-by-step explanation:

Positive numbers are always greater than negative numbers no matter the quantities. Also, the greater the negative number is, the less it becomes.

Hope this helps :D

The diagonals of a rectangle are always

Answers

Answer:

The diagonals of a rectangle are always congruent

Answer:

Step-by-step explanation:

Diagonals of a rectangle are always congruent.

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