All categories

4 years ago

30% of the sixth grade is eleven years old. if there are 90 eleven years olds, how many total students are in the sixth grade?

Mathematics

2 answers:

svp [43]4 years ago

7 0

If 30% of the grade=90 students then 10%=30. This means that the total amount of students is 100% which is equal to 300 students.

Darina [25.2K]4 years ago

5 0

The answer is 300 students.
.3x = 90
90 / .3 = 300

You might be interested in

Someone pls help, its on trig ratios.

Mars2501 [29]

Answer:

$BC=12.8,\\AC=15.1$

Step-by-step explanation:

In right triangles only, the tangent of an angle is equal to its opposite side divided by its adjacent side.

Therefore, we have the following equation:

$\tan 58^{\circ}=\frac{BC}{8}$

Solving, we get:

$BC=8\tan 58^{\circ}\approx \boxed{12.8}$

Also in right triangles only, the cosine of an angle is equal to its adjacent side divided by the hypotenuse of the triangle.

$\cos 58^{\circ}=\frac{8}{AC},\\AC=\frac{8}{\cos 58^{\circ}},\\AC\approx \boxed{15.1}$

We can also use the Pythagorean theorem now that we've found BC. However, if you choose to do so, make sure you don't use a rounded value for BC, as that could cause a notable deviation in your final answer.

Using the Pythagorean theorem to verify our answers:

$8^2+(8\tan 58^{\circ})^2=\left(\frac{8}{\cos 58^{\circ}}\right)^2\:\checkmark$

6 0

3 years ago

All the Factors of x cubed minus 6x squared plus 11 minus 6

lutik1710 [3]

Answer:

Step-by-step explanation:

f(x) = x^3 - 6x^2 + 11x - 6

By the Rational Roots theorem, the roots will be among ±1,2,3,6

So try the low-hanging fruit first. It is clear that f(1) = 0. So, factoring that out, you have

f(x) = (x-1)(x^2-5x+6)

Now factor the quadratic in the usual way.

8 0

3 years ago

Translate this sentence into an equation. 39 is the product of Hector's height and 3. Use the variable h to represent Hector's h

vova2212 [387]

So basically, 39=H+3 because 39 is the product = H (hectors height) and (+) 3

3 0

3 years ago

What is <br> 2 1/4 cups converted to pints

DiKsa [7]

Answer:

1.125 0r 2.25

Step-by-step explanation:

the first is liquid and the second is cups

7 0

2 years ago

Please help answer this the best you can!!:)

kompoz [17]

It could either be the first one or the second just trying to help. :)

4 0

4 years ago