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
agasfer [191]
3 years ago
12

The ratio of boys to girls at a school is 12 to 13. If 300 students attend the school, how many are boys?

Mathematics
1 answer:
den301095 [7]3 years ago
4 0

Answer:

144  boys

Step-by-step explanation:

so you would add 12 and 13 and divide it by 300

so 12/300= 12

so= 12*12= 144

You might be interested in
Solve for y.<br> A. 10 <br> B.12<br> C. 15<br> D. 18
djverab [1.8K]
Y=10°
If we're solving for the ninety degree angle, which I seem to doubt, then if 3x=90 then 2x=60 giving a missing total of 30. 30/3 equals 10
4 0
3 years ago
Read 2 more answers
Solve the proportion.<br> 1<br> 4<br> Z/20
DedPeter [7]

Answer:

1/4=z/20. This deals with adding, subtracting and finding the least common multiple. Overview; Steps; Topics Terms and topics;

6 0
3 years ago
Divide using long division (4x^2-2x+7) divided by (x-1)
Julli [10]
The answer is: 4x-3+7/x
8 0
3 years ago
The area of a right triangle is sixty square centimetres. Its base is one centimetre less than twice its height. If the base and
NemiM [27]

Answer:

5. None of the above

Step-by-step explanation:

We have this information:

A = 60 cm2

b = 2*h - 1

Let's find out b and h:

The equation of the are of a triangle is A = (b*h)/2, if we replace it with our information, we have

60 = ((2*h - 1) * h)/2\\ 120 = 2*h^2 - h\\ 0 = 2*h^2 - h - 120

Let's find h with the quadratic formula:

\fbox {Quadratic formula:}  \frac{-b\pm\sqrt{b^2-4ac}}{2a}

h = \frac{-(-1)\pm\sqrt{(-1)^2-4*2*(-120)}}{2*2} = \frac{1\pm\sqrt{961}}{4} = \frac{1\pm\ 31}{4}

h = 8 or h = -7.5

But h represents the height of the triangle, so it has to be a positive number, that's h = 8.

If we replace this in the equation we had for b, we have that b = 2*8 - 1 = 15.

Now we can calculate the hypotenuse with the Pythagorean equation  

\fbox {Pythagorean equation:} <em>The square of the length of the hypotenuse (the side opposite the right angle) of a right triangle is equal to the sum of the squares of the two legs (the two sides that meet at a right angle). </em>

The base and the height are our legs. We will use "H" for the hypotenuse

H^2 = b^2 + h^2 = 15^2 + 8^2 = 289\\ H = \sqrt {289} = 17

H = 17

If we decrease the base and the height by 2 centimeters, we have  

b' = 15 - 2 = 13 and h' = 8 - 2 = 6

With this, let's calculate the new hypotenuse:

H'^2 = b'^2 + h'^2 = 13^2 + 6^2 = 205\\ H' = \sqrt {205} \approx 14.3

H' \approx 14.3

So, the hypotenuse decreases H - H' \approx 17 - 14.3 = 2.7

3 0
3 years ago
explain how the position of the decimal point changes in a quote as you divide by increasing powers of 10
Marianna [84]
If you have 20/10, that equals 2. Then if you move the decimal place over 1 place then you have 2.  If you divide 2 again by 10, then move the decimal place over in another place, it is equaling 0.2.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Oscar’s family lives 24 kilometers from the riding stable. They have traveled 5,000 meters. How many more kilometers are left be
    11·2 answers
  • What is the value of (3 1/2 - 9 3/4) ÷ (-2.5)
    5·1 answer
  • Instructions:Select the correct answer.
    6·1 answer
  • Three consecutive even integers have the property that when the difference between the first and twice the second is found, the
    15·1 answer
  • All of these value from smallest to largest
    15·1 answer
  • Find the area of the shaded region of the graph
    9·1 answer
  • Graph the line that satisfies each condition. please help
    5·1 answer
  • A plane leaves at 11:22 AM and arrives at 3:13 PM how long was the flight
    14·1 answer
  • How do you find theoretical probability?
    12·1 answer
  • DUE IN 8 MIN HELP FAST
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!