All categories

2 years ago

There are 84 boys in a freshman class of 146 students. Find the ratio of boys to girls.

Mathematics

1 answer:

fredd [130]2 years ago

5 0

There are 146 - 84 = 62 girls

ratio is 84:62

simplifies to 42:31

You might be interested in

A survey of 450 seventh grade students revealed that 8

yanalaym [24]

Answer:

Step-by-step explanation:

3 0

2 years ago

Write the statement in if-then form in two ways, one of which is the contrapositive of the other: Sam will be allowed on Signe's

bezimeni [28]

Answer:

1) If Sam is an expert sailor then she will be allowed on Signe's racing boat.

2) If Sam is not allowed on Signe's racing boat, then she is not an expert sailor.

Step-by-step explanation:

The contrapositive statement of if P → Q is if ~Q→~P.

In this case we have: If Sam is an expert sailor then she will be allowed on Signe's racing boat.

P = Sam is an expert sailor

Q = Sam will be allowed on Signe's racing boat.

To write the contrapositive statement we're going to say if ~Q→ ~P

If Sam is not allowed on Signe's racing boat, then she is not an expert sailor.

4 0

2 years ago

Rovan can make 48 tarts per hour. complete the table below:

GarryVolchara [31]

Answer:

A.) in 6 hours Rovan can make 288 tarts

B. at this rate it'll take Rovan about 2 and a half hours to make 120 tarts

Step-by-step explanation:

so if Rovan can make 48 tarts an 1 hour take 48 and multiply it by the hours to find out how many tarts he can make

48 x 1 =48

48 x 2 =96

48 x 3 =144 .....

48 x 6 =288

A.) in 6 hours Rovan can make 288 tarts

B. at this rate it'll take Rovan about 2 and a half hours to make 120 tarts

3 0

2 years ago

Read 2 more answers

paris run 3 1/2 laps around the circular track in the school gym. The track has a diameter of 1/2 mile. About how far does paris

fiasKO [112]

Answer:

5.497787144 miles

Step-by-step explanation:

Remember that circumference of a circle can be calculated with:

$2\pi r$

r=radius

We also know that the radius is just a half of the diameter.

So, the radius of the track is (1/2)/2=1/4 miles

Now, use the circumference of a circle formula to find how much she runs in 1 lap.

$2\pi (\frac{1}{4} )$

Simplify

$\frac{\pi }{2}$

This is how much she runs in 1 lap.

Multiply by 3.5 for 3 and a half laps.

$\frac{\pi }{2}*3.5$

The answer is around 5.497787144 miles.

7 0

3 years ago

can someone please help me find the surface area of the pyramid with an equilateral triangle for a base

ioda

To obtain the total surface we have to calculate the surface of the 4 triangles and add up the areas (remember that the area of a triangle is (b*h)/2 , b is the base, h is the height ).

We will caculate first the area of the base triangle for that we considerer the fact that it is an equilateral triangle with sides of lenght 6 cm, now we calculate the height, I am going to draw please wait a moment

using the pythagorean theorem we have that

$\begin{gathered} h^2=6^2cm^2-3^2\operatorname{cm}=27cm^2 \\ h=\text{ }\sqrt[]{27\text{ }}cm \end{gathered}$

Then, the area of the triangle is 6*h/2 = 3h = 15.59 cm^2.

Now we calculate the area of the other 3 triangles, notice that those triangles have the same base and height so we will calculate for one of them and multiply by 3. From the image we know that the height is 15cm and the base is 6 cm so the area is 45cm^2, and 45*3 cm^2 = 135cm^2.

Finally we add up all the areas:

$135cm^2+15.59cm^2=150.59cm^2$

6 0

6 months ago