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

What percent of 80 is 16

Answers

Answer:

20 percent

Step-by-step explanation:

20 percent

Step 1: 16/80

Step 2: 16/80 x 100/100 = 20/20

Step 3: 20

BRAINLIEST HELPPPP PLEEEASE

Answers

Being the same distance away from 0 if you add the positive and negative values together the answer would be 0.

Answer: x + y = 0

I can write an equation​

Answers

Answer:

Step-by-step explanation:

y = mx + b

slope m is found as the change in y over the change in x

as y decreases 3 units for a 3 unit increase in x, the slope is -3/3 = -1

The y intercept b is where the plot crosses the y axis, 4 units above the x axis

y = -1x + 4

or

y = 4 - x

please help

x-3=x^(2)-10x+25

Answers

Answer:

x=7,4

Step-by-step explanation:

3) Solve the problem using your graphing calculator. Round all para meter values to the nearest hundredth.

Beatrice used a slingshot to launch an egg into the air. She recorded the egg's path using a motion detector. The following data represents the height (in feet) of the egg at certain time points (in seconds). Distance is the dependent variable and time is the independent variable: {(0.0, 16), (1.7, 20.46), (2.5, 23.16),(3.7, 23.51),(5.1, 20.07), (6.6, 12.4),(7.3,5.62), (8.0, 0.15)}

At approximately which time is the egg on the ground?

A). O seconds
B). 16 seconds
C). 8 seconds
D). -2 seconds
E). The egg is never on the ground.​

Answers

Answer:

mmm, well, not much we can do per se, you'd need to use a calculator.

I'd like to point out you'd need a calculator that has regression features, namely something like a TI83 or TI83+ or higher.

That said, you can find online calculators with "quadratic regression" features, which is what this, all you do is enter the value pairs in it, to get the equation.

Step-by-step explanation:

Which number is a factor of 14 but not a multiple of 7??

Answers

Answer:

2

Step-by-step explanation:

Write out all the factors for 14

Then write out the multiples of 7

Compare the numbers then find the greatest number in 14's factors that isn't in 7's multiples

Put the numbers in order from least to greatest: -2.15,-9/4,2,-2,-15/7

Answers

-9/4 < -2.15 < -15/7 < -2 < 2

What point lies on the line described by the equation y+8=4(x-5)

Answers

(7,0) for more info please see attached picture

The persons income increased from 27,000 to 40,000 over the last year. What is the percent change

Answers

Answer:

32.5

Step-by-step explanation:

ABCD is a parallelogram. Determine the value of a.

Answers

Answer:

a = 6

Step-by-step explanation:

The opposite sides of a parallelogram are congruent , so

BA = CD , that is

7a - 3 = 3 + 6a ( subtract 6a from both sides )

a - 3 = 3 ( add 3 to both sides )

a = 6

Answer:D

Step-by-step explanation:

I took the test

What is the vertical asymptote of the function f(x) = (x - 5)/(x ^ 2 - 2x - 15)

Answers

Answer:

Vertical asymptote is at [tex]x=-3[/tex]

Step-by-step explanation:

Let us plot the function

Here

[tex]\frac{x-5}{x^{2}-2x-15}=\frac{x-5}{(x-5)(x+3)}\\\\=\frac{1}{x+3}[/tex]

Function does not exits at [tex]x=-3[/tex]

Vertical asymptote is at [tex]x=-3[/tex]

Which fraction is the same as 3.375?

Answers

Answer: 27/8 or 3 3/8

Step-by-step explanation:

Write 3.375 as 3.375/1

then you take the numerator 3.375 and multiply it by 1000. Multiplying is to make 3.375 a whole number. Whatever you do to the numerator, you have to do to the denominator. So, we take 1x1000 aswell. Then our fraction would be 3375/1000.  

   Then, we would find the greatest common factor. The greatest common factor, or GCF, is the greatest factor that divides two numbers. To find the GCF of two numbers: List the prime factors of each number. The GCF is 125. Then you divid 125 by the fraction, (which means that you divid the number by both the numerator and denominator) and you get the answer, which is 27/8.

  If the question is asking you to turn the fraction into a mixed number, you would have to find out how many times 8 going into 27. It goes in 3 times.  That is ur whole number. Then do 8x3 to get 24. take 27 and subtract 24 to get 3. that 3 is your numerator. The denominator stays the same.  ur final answer as a mixed number is 3 3/8.

Evaluate the expression
[3(15+4)2 +2(20+5)2]0
0
5
1
2

Answers

0, 5, 5, 1, 2

is evaluate

Which answer shows the correct solution for 6x + 19x - 4 = 5(5x + 4)?

No solution
Infinitely many
One solution

Answers

Answer:

No solution

Step-by-step explanation:

25x-4=5(5x+4)

Distributive Property= 25x-4=25x+20

Solve for x

-4=20

Not possible so no solution.

Answer:

A

Step-by-step explanation:

6x + 19x -4 = 5(5x+4)

6x + 19x -4 = 25x+20

6x + 19x- 25x = 20+4

Combine Like terms

0 = 20 +4

0 = 24

0 = 24 = No solution

HELP

HOW AM I MEANT TO ANSWER THIS QUESTION I WOULD ASO LIKE ANSWER.

THX

Answers

Answer: the smallest is 2^5, 6^2, 3^4 and the largest is 5^3

6*6= 36
3*3*3*3= 81
2*2*2*2*2= 32
5*5*5= 125
So the answer would be-
2^5,6^2,3^4,5^3

The coordinates of the point that is a reflection of Y(-4,-2) across the x-axis are what. The coordinates of the point that is reflection of y across the y-axis are what?

Answers

Answer:

Step-by-step explanation:

across x axis:(-4,2)

across y-axis:(4,-2)

you buy 2.3 pounds of apples for $1.43 per pound. how much do you spend

Answers

Answer:

$3.36

Step-by-step explanation:

$1.43 = 1 lbs

$1.43 + $1.43 = $2.86

$2.86 + .3 = $3.36

need help math problem give you 5 stars and a good rating if you do this

Answers

Answer:

Add 9.6 then divide by 3.2

The Rahul ages of and pushti are in the ratio 3 ratio 5 four years later the sum of their ages will be 48 what are their present ages​

Answers

Answer:

Rahul is 15, Pushti is 25

Step-by-step explanation:

Rahul age = r, Pushti age = p

Equations according to given info:

r / p = 3 / 5 ⇒ r = 3p/5r + 4 + p + 4 = 48 ⇒ r + p = 40 ⇒ r = 40 - p

Compare the two equations and solve for p:

3p/5 = 40 - p3p = 200 - 5p3p + 5p = 2008p = 200p = 200/8p = 25

Find the value of r:

r = 40 - 25 r = 15

What is the product of the expression below?
4/7

×
5/8

Answers

4/7 x 5/8
Multiply numerators and denominators

= 20 / 56
Simply

= 5 / 14

how much simple interest will be earned in 3 years on $2500 in an account that pays 1.5%​

Answers

Answer

Step-by-step explanation:

Answer:

$112.50

Step-by-step explanation:

1.5% = 0.015

$2500 × 0.015 × 3 = $112.50

Which statement below is TRUE about |-2| and |-5|?

|-5| is greater than |-2|
|-2| is greater than the |-5|
Neither statement is true

Answers

Answer:

|-5| is greater than |-2|

Step-by-step explanation:

the absolute value of -5, is 5, which is greater than the absolute value of -2, which is 2. Have a wonderful rest of your day! I hope this helps!

A sample of one-year-old girls had a mean weight of pounds with a standard deviation of pounds. Assume that the population of weights is normally distributed. A pediatrician claims that the standard deviation of the weights of one-year-old girls is less than pounds. Do the data provide convincing evidence that the pediatrician's claim is true

Answers

Answer:

cool and cool and cool and cool

what is 345.543 multyply by 46.34 devide by 666.89 ???? help faster 3 minutes remaining

Answers

Answer:

24.010

Step-by-step explanation:

hope it helps

Determine if the point (2,-1) is a solution of the system: 3x - y = 7 2x + 3y = 1

Answers

Answer: Yes (2,-1) is the solution for those systems.

becausee...

1. 3(2) - (-1) = 7

     6 + 1 = 7

     7 = 7

2. 2(2) + 3(-1) = 1

      4 - 3 = 1

      1 = 1

Hope this helps :)

Answer:

Yes the point (2,-1) is a solution of the system: 3x - y = 7 2x + 3y = 1

Step-by-step explanation:

(2,-1) = x = 2, y = -1

Now lets put these values in the given expressions

3x - y = 7

3 × 2 - (-1)

6 + 1

= 7 THIS EQUATION IS THE SOLUTION

2x + 3y = 1

2 × 2 + 3 × (-1)

4 - 3

= 1 THIS EQUATION IS THE SOLUTION

x - y = 3
b) Work out the value of 2x – 2y

Answers

Answer: 2x-2y=3
Step-by-step
Explanation:

In the triangle below, which equation can
be used to solve for x?

Answers

The answer is B x=13sin75/sin50

What is 4/5 divied by 2/5

Answers

Answer:

2

Have a nice day :D

Answer:

2

Hope this helps

help!!!! PLEASEEE!!! ​

Answers

Answer:

it is a little blurry I cannot tell what d is

Someone Help?

Find the problem:

22 + 53x + x = -20 + 60x

22+ 54x = -20 + 60x

22= -20+ 6x

2= 6x

x = 1/3


Fix the problem (Rewrite and solve):

Answers

the final solution is x=7
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