My little sister wanted me to explain this to her but I forgot... someone please help me
30% of x = 12

Answers

Answer 1

30% = 0.30

0.30x = 12

Divide both sides by 0.30

X = 12/0.30

X = 40

Answer 2

Answer:

x=40

Step-by-step explanation:

30% is the same as 3/10.

-So now you have 3/10 of x = 12.

The term “of” in the equation is the same as multiplication.

-So now you have 3/10 · x = 12 (the dot is multiplication)

Multiply both sides by the reciprocal of 3/10, which is 10/3

-So now you have x=120/3, which is equal to x=40 (that’s you answer)

You can check your answer by plugging in 40 for x.

30% of 40 is indeed equal to 12.

Hope this helps and answers your question :)


Related Questions

expand and simplify 3(2a+3b)+2(2a+2b)​

Answers

Answer:

=10a+13b

Step-by-step explanation:

Let's simplify step-by-step.

3(2a+3b)+2(2a+2b)

Distribute:

=(3)(2a)+(3)(3b)+(2)(2a)+(2)(2b)

=6a+9b+4a+4b

Combine Like Terms:

=6a+9b+4a+4b

=(6a+4a)+(9b+4b)

=10a+13b

Two lines are perpendicular. The slope of the first line is. What is the slope of the second line?

Answers

Answer:

Therefore, the slope of the original line is 1/2. A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line. The negative reciprocal of the original line is –2, and is thus the slope of its perpendicular line.

Write each decimal as a percent. 0.59 0.98 0.02 1.33

Answers

Answer: to find the percent equivalent, multiply the decimal by 100.

59%

98%

2%

133%

hope it helps!

Answer:

59%

98%

2%

133%

Step-by-step explanation:

0.59 × 100 = 59%

0.98 x 100= 98%

and same with the others

Tickets for a concert cost $25 each. You have $180 to spend. Write
an expression for the money that you have left after buying
t tickets. Evaluate the expression to find the amount of money left
after buying 6 tickets.

Answers

Answer:

180 - 25(T)= 30

T=6

180 - 25(6)= 30

A new drug on the market is known to cure 30% of patients with cervical cancer. If a group of 18 patients is randomly selected, what is the probability of observing, at most, one patient who will be cured of cervical cancer?

Answers

Answer:

Probability cured of cervical cancer =  18C0 (0.30)⁰(0.70)¹⁸ +  18C1(0.30)(0.70)¹⁷

Step-by-step explanation:

Given:

Patients cured = 30% = 0.30

Number of patients (n) = 18

Probability cured of cervical cancer = P(X≤1)

Probability cured of cervical cancer  = P(X=0) + P(X=1)

Probability cured of cervical cancer =  18C0 (0.30)⁰(0.70)¹⁸ +  18C1(0.30)(0.70)¹⁷

is 39.81 rational or irrational

Answers

Answer:

its rational

Step-by-step explanation:

:)

Answer:

It is rational

Step-by-step explanation:

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

1.23 x 1.1 equals =

Answers

Answer:

1.23 x 1.1 = 1.32

Is x-x at infinity 0?

Answers

Answer: X/infinity tends to zero but never zero.

Probably incorrect, but I tried my best.

Which must be larger log 15 Or In 15? And why

Answers

Answer:

ln 15 must be greater (larger than) if log 15 is common.

Step-by-step explanation:

log 15 [assumed to be a common logarithm]

‹–› 15 = 10 ^ log(15)

ln 15 [natural log which has a base of e] ‹–› 15 = e ^ ln(15).

10 > e

e ≈ 2.7218.

e is approximately 3 rounded to the nearest whole number.

Logically you would need to raise 3 to a greater power for 3ⁿ = 15. Than 10ⁿ = 15.

For example 3² < 10² → 3³ < 10³ → 3⁴ < 10⁴ → ... Thus 3ⁿ < 10ⁿ for n > 0.

How does this step ensure that the new angle will be congruent to the original angle?

Answers

Iidkdndhwbwjwjw wiebwbwjw kanwkw

Solve: -6n + 5 < 11
Wich graph shows the solution?

Answers

Answer:

The last graph

Step-by-step explanation:

You have to solve for n that is where you get the plot then you have to remember in inequalities if you divide by a negative you have to switch the sign. The inequality is not a less than or equal to or greater than or equal to so the plot would be an open circle. Because we switched the sign it goes down the left side of the graph because of the direction the sign is pointing to.

Answer:

second graph

Step-by-step explanation:

when you solve for the value of n, you will obtain

n=-1

introducing the sign

which is n>-1

hence the above response


A school is electing students for class officers. There are four offices: president, vice president, secretary, and treasurer. The student with the most votes becomes president, second highest number of votes is vice president, and so on. If there are students in this class, how many ways can students be elected?

Answers

Answer:

84,264

Step-by-step explanation:

Answer:

84,264

Step-by-step explanation:

bubba buys a $95 calculator on sale for 30% off. what's the discount and sales price?

Answers

firstly, we multiply 95 by 30% and divide it by 100.
95 * 30/100= 28,5

95-28,5= 66,5

What role do animals have in the carbon cycle?
Group of answer choices

use water and release oxygen

use sugar and release carbon

use carbon and release oxygen

use carbon and release nitrogen

Answers

I believe it is use sugar and and release carbon. We breath in oxygen so you know it can’t be anything where we release oxygen. And I don’t know how we could release nitrogen so I would go with the second one

Answer:

Animals eat plants, and when they do, they obtain the carbon. Later, they release that carbon by means of respiration. Fungus, Bacteria, Algae and other microorganisms create carbon when they decompose dead plants and animals.

Step-by-step explanation:

hope this helps

Pls look in file below for question

Answers

Answer:

the answer to the question is 7

3.996 ➗ 1.2 =
plz help i need the answer

Answers

Answer:

3.33

Step-by-step explanation:

hope this helps!!

Answer:

3.33

Step-by-step explanation:

find the y-intercept and y-intercept of the line. x-2y=8​

Answers

Answer:

Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 hshshsye bdbs dhd dhd dhd dh rge ege ehevehe

Math question on bottem

Answers

Answer
C
I could be wrong
Explanation

Answer:

12.56km

Step-by-step explanation:

circumference formula is C= 2(π)(r)

r= 2 so

C=2(π)(2)

C= 12.56

Write the expanded form of the expression -1/6 (y-x)

Answers

Answer:
-1/6y+1/6x
hope it helps:)

Answer:

-1/6y + 1/6x

Step-by-step explanation:

Any blinks here? if so.. what album should i get?

Theres more but they cant fit in one pic have a great night or good morning ​

Answers

Answer:

♡ hi there blink ♡

get the album! comes with a poster, etc.

it's great and it stands out from the rest  ☆

of the album they made. have a great day!

-madi/madeline

✧・゚: *✧・゚:・゚✧*:・゚✧・゚: *✧・゚:・゚✧*:・゚✧

Step-by-step explanation:

can someone help me with this? I’m very confused and my results aren’t matching

Answers

You basically start at the start and whatever answer you get you go that way and if you get your answers right it should lead you to finish.

The probability of getting bonus points is 8/19

Answers

Answer:

11/19

Step-by-step explanation:

If the probability is 8/19, the reverse is 11/19. That is the odds.

Hope this finds you well on a cold day!  

Is the following relation a function?

A. Yes
B. No

Answers

Yes............................

Answer:

Yes, it's a function.

Step-by-step explanation:

Find an equation of the sphere that passes through the point (6, -2, 3) and has center (-1, 2, 1). Find the curve in which the sphere intersects the yz-plane. Find the center and radius of the sphere

X^2 + y^2 + z^2 -8x + 2y +6z + 1 = 0

Answers

Answer:

A)  x^2 + 2x+ y^2 - 4y + z^2 - 2z - 63 = 0

B) radius = 5

center  = (4,-1,-3)

Step-by-step explanation:

[tex]x^2 + y^2 + z^2 - 8x + 2y + 6z + 1 = 0[/tex]

A ) Determine the curve in which the sphere intersects the yz-plane

determine the radius ( r ) =  √((6-(-1))2+(-2-2)2+(3-1)2) = √69

next the equation of the sphere ( curve in which the sphere intersects the yz-plane )

x^2+2x+y^2-4y+z^2-2z-63 = 0

B) determine the center and radius of the sphere

X^2 + y^2 + z^2 -8x + 2y +6z + 1 = 0

(x-4)2+(y+1)2+(z+3)2 = 25 = 52

radius = 5

center  = (4,-1,-3)

NEED HELP ILL GIVE BRAINLIEST PLEASE!!!

Answers

Answer:

13 feet

Step-by-step explanation:

From start to finish, a machine can fill a bottle of water, seal it, label it, and pack it in 8.6 seconds. About how many bottles of water are packed in 480 seconds?From start to finish, a machine can fill a bottle of water, seal it, label it, and pack it in 8.6 seconds. About how many bottles of water are packed in 480 seconds?

Answers

Answer:

The answer is 50 or 55.

Step-by-step explanation:

Answer:

The answer is 50

Step-by-step explanation:

i did test on edg

Help with 2 things plz I will give brainliest

Answers

Answer:

x is 3 y is 52        x is 50, y is 70

Step-by-step explanation:

1

we know y=14x=12x+6 since they are vertical angles, and correlating angles.

14x=12x+6

2x=6

x=3

subsitute x=3

y=14(x)   turns into y=52

x is 3 y is 52

2.

x+20=y  since alternate interior

y+2x+10=180    because they are supplementary

x+20+2x+10=180    subsitute  for y

3x+30=180

3x=150

x=50

50+20=y

70=y

Write a linear equation that passes through the points (-3,3) and (9,-13).

Answers

Find the slope
(y2-y1)/(x2-x1)
(-13-3)/(9+3)
-16/9 = -1.333 repeating slope
Equation: y = 1.333x - 1

If –3 + i is a root of the polynomial function f(x), which of the following must also be a root of f(x)? –3 – i –3i 3 – i 3i

Answers

Answer:

-3-i is the correct answer.

Step-by-step explanation:

If –3 + i is a root of the polynomial function f(x), Then -3 -i must also be a root of f(x)

What is a Root?

The root is the value where the given function will tends to zero.

How to determine?

If –3 + i is a root of the polynomial function f(x), Then -3 -i must also be a root of f(x)

Learn more about Roots:

https://brainly.com/question/10345879

#SPJ2

32. Parallelogram ABCD has vertices A(0,0), B(2,4), and C(10,4). Find the coordinates of D.
Answer:

Answers

Answer:

The fourth vertex is D(8, 0)

Step-by-step explanation:

Let A(0, 0), B(2, 4), and C(10, 4) be the three vertices of a parallelogram ABCD and let its fourth vertex be D(a, b).

Join AC and BD. Let AC and BD intersect at point O.

We have known that the diagonals of a parallelogram bisect each other.  

So, O would be the midpoint of AC as well as that of BD.

[tex]A\left(0,\:0\right)=\left(x_1,\:x_2\:\right)[/tex]

[tex]C\left(10,\:4\right)=\left(x_2,\:x_2\:\right)[/tex]

The midpoint of AC is:

[tex]\mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]

[tex]\left(x_1,\:y_1\right)=\left(0,\:0\right),\:\left(x_2,\:y_2\right)=\left(10,\:4\right)[/tex]

[tex]=\left(\frac{10+0}{2},\:\frac{4+0}{2}\right)[/tex]

[tex]=\left(5,\:2\right)[/tex]

The midpoint of BD is:

[tex]=\left(\frac{a+2}{2},\:\frac{b+4}{2}\right)[/tex]

so

∵  [tex]\frac{a+2}{2}=5[/tex]

[tex]a+2=10[/tex]

[tex]a=8[/tex]

∵ [tex]\frac{b+4}{2}=2[/tex]

[tex]b+4=4[/tex]

[tex]b=0[/tex]

Hence, the fourth vertex is D(8, 0)

Other Questions
Shampoo can be bought in 5 gallon pails. The groomer uses 16 ounce bottles to to hold the shampoo. How many bottles can he get out of the 5 gallon pail? There's a mirror over the steel sink in my cell. It's six inches high, and scratched with the names of some guys who were here before me. When I look into the small rectangle, I see a face looking back at me but I don't recognize it. It doesn't look like me. I couldn't have changed that much in a few months. Monster, Walter Dean Myers This passage shows: first-person point of view second-person point of view third-person point of view Explain the method scientest use to study how Earth's atmosphere and climate have changed during the past million years. (brainliest Reward) PLS ITS DUE IN 20 MINUTESEstela and Luiza are going to share 35 dolls, either in the ratio of their ages, or in the ratio of dolls they haveEstela is 9 years old and has 24 dolls already.Luiza is 12 years old and has 36 dolls already.Which ratio would be better for Estela? this is very very important so please help me !! Mrs. Williamson had 18 students in her homeroom at the beginning of the school year and 24 students at the end of the year. What was the approximate percent increase in the number of students in Mrs. Williamsons homeroom? Name one Executive Order issued by President Trump A study was conducted to investigate how the amount of time spent study can help predict the test scores on the content. The studying showed a positive strong linear association between these two variables. Here are the statistics:Mean of study time: 2.4 hours Standard Deviation of study time: 0.79 hours Mean of test scores: 77 points Standard Deviation of test scores: 7.7 points a. Calculate the slope of the LSRL.b. Calculate the y-intercept of the LSRL.c. Write the equation of the LSRL in context. Angle x is (2n + 12) and angle y is (3n + 18). Find the measure of angle x. Dorothy Grant is in one of the special populations that are vulnerable to abuse. Identify this population, as well as the other special populations that are most vulnerable to abuse. What is the most widespread form of family violence? NEED ASAP 11/22/20 On your first day in business, 126 people come to eat. They spend about $52 each. About how much money did you earn on your first day? Calculate the slope of the line through the two points given:a. (-3, 5) and (3, -4)b. Without graphing the line, is the line slanted up or slanted down (from left to right)? How doyou know? On a coordinate plane, a line goes through (0, 1) and (5, 0). What is the equation of the line that is perpendicular to and has the same y-intercept as the given line? The first step in taking notes to generate a summary of an audio presentation is to paraphrase central ideas. eliminate minor details. identify important words and phrases. summarize in ones own words. How many solutions can be found for the system of linear equations represented on the graph?A) no solutionB) one solutionC) two solutionsD) infinitely many solutions a triangle with angle measures of 45 45 and 90 is Write the slope intercept form of the equation of each line plz A sound argument is both andO valid ... falseO logical... invalidO logical... validO valid ... true Based on Romeos reason for being at the party and Tybalts response to seeing Romeo, how is Tybalt a foil for Romeo? Tybalt is proud, but Romeo is depressed. Tybalt is poetic, but Romeo is plain-spoken. Tybalt is focused on hate, but Romeo is focused on love. Tybalt dances at the party, but Romeo will not dance. blood enters the heart through the...a. atriumsb. ventricles