1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ymorist [56]
2 years ago
15

what's the ratio of boys to girls in a class is 3:4 and if there are 12 boys in the class how many girls are ther​

Mathematics
2 answers:
KiRa [710]2 years ago
7 0

Answer:

Step-by-step explanation:

b/g=3/4 so if there are 12 boys this becomes

12/g=3/4 multiply both sides by g

12=3g/4 multiply both sides by 4

48=3g divide each side by 3

16=g

So there are 16 girls in the class.

snow_lady [41]2 years ago
3 0

Answer:

16

Step-by-step explanation:

Boys is written first so 3:4 the 3 stands for boy.

12 boys in class means that the 3 from 3:4 was multiplied 4 times so you do the same to other side. 4 times 4 is 16, therefore the answer is 16.

You might be interested in
What is the probability that a randomly drawn marble from bag is green. Given that it is not red?
tatiyna

Answer:

The probability is 0.2, or 20%.

Step-by-step explanation:

A probability is the ratio of the number of relevant outcomes and the number of all possible outcomes. If we know that the marble drawn is not red, the number of possible outcomes N is

N = (number of blue marbles) + (number of green marbles) = 25

and the number of relevant outcomes (marble being green) is n:

n = (number of green marbles) = 5

So, the probability is

P = n / N = 5 / 25 = 1 / 5 or 0.2, or 20%

6 0
2 years ago
Alex is making a pizza. The round pizza pan has a 16 inch diameter. What is the area of the pizza crust needed to fill the entir
Lubov Fominskaja [6]

Answer:

The area of the pizza crust is 200.96 inches²

Step-by-step explanation:

* Lets explain how to solve the problem

- The area of any circle is πr² , where r is the length of its radius

- The length of the diameter of any circle is twice the length of

  its radius (diameter = 2 radius)

* Lets solve the problem

- Alex is making a pizza

- The round pizza pan has a 16 inch diameter

- To find the area of the pizza crust is needed to fill the entire pan,

  calculate the area of the pan

∵ The diameter of the pan is 16 inches

∵ The radius of the pan = 1/2 diameter

∴ The radius of the pan = 1/2 (16) = 8 inches

∵ The area of the pan = πr²

∵ π = 3.14 and r = 8 inches

∴ The area pf the pan = 3.14 (8)² = 200.96 inches²

∵ The area of the pizza pan = the area of the pizza crust

∴ The area of the pizza crust is 200.96 inches²

7 0
2 years ago
If m(-12) =0 is the result of M(x) using the reminder theorem then what do -12 and 0 represent?
lions [1.4K]

Suppose we wish to determine whether or not two given polynomials with complex coefficients have a common root. Given two first-degree polynomials a0 + a1x and b0 + b1x, we seek a single value of x such that

Solving each of these equations for x we get x = -a0/a1 and x = -b0/b1 respectively, so in order for both equations to be satisfied simultaneously we must have a0/a1 = b0/b1, which can also be written as a0b1 - a1b0 = 0. Formally we can regard this system as two linear equations in the two quantities x0 and x1, and write them in matrix form as

Hence a non-trivial solution requires the vanishing of the determinant of the coefficient matrix, which again gives a0b1 - a1b0 = 0.

Now consider two polynomials of degree 2. In this case we seek a single value of x such that

Hope this helped, Hope I did not make it to complated

Please give me Brainliest

3 0
2 years ago
Please help..If you know the correct answer​
never [62]

Answer:

AC is the longest side

AB is the shortest side

Step-by-step explanation:

We can find the third angle

A+B+C = 180

55+80+C = 180

135+C = 180

C = 180-135

C =45

The longest side is opposite the largest angle

B is the largest angle so AC is the longest side

C is the the smallest angle so AB is the shortest side

3 0
3 years ago
Help please how do I solve for k
Pachacha [2.7K]
I need to see the rest to solve the k but I know that the direct is 50. is there any other part to it so I can solve it
7 0
3 years ago
Other questions:
  • 6x-8=2+9x-1<br> How do you figure this program?
    9·2 answers
  • How many solutions does the following equation have? 4(y-30)=4y+12
    12·2 answers
  • 19/10 into a mixed or whole number?? How would you work this out? i need help.
    13·2 answers
  • Math help plz! Check for extraneous solutions. Giving brainlist
    14·1 answer
  • What is the slope of a line that is perpendicular to 4x-8y=64
    10·1 answer
  • What can you do when the unit prices for two comparable items are listed using different units of measure? a. The secondary unit
    5·1 answer
  • Lisa is packing a set of cubic inch blocks into the box shown below How many blocks will fit in the box8 in.5 in.3 in.A.16B. 32C
    10·1 answer
  • 4x =64 find x in exponential equations <br><br>​
    8·1 answer
  • 14. Consider the following questions: give the distribution name, carefully define the random variables you use and find the fin
    7·1 answer
  • 13 units find area of sector EFG.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!