3 years ago

A school has 320 girls and 250 boys.

Mathematics

1 answer:

Makovka662 [10]3 years ago

8 0

Answer:

580 girls and boys

Step-by-step explanation:

You might be interested in

You are given the parametric equations x=2cos(θ),y=sin(2θ). (a) List all of the points (x,y) where the tangent line is horizonta

vladimir1956 [14]

Answer:

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

Step-by-step explanation:

The slope of the tangent line at a point of the curve is:

$m = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

$m = -\frac{\cos 2\theta}{\sin \theta}$

The tangent line is horizontal when $m = 0$ . Then:

$\cos 2\theta = 0$

$2\theta = \cos^{-1}0$

$\theta = \frac{1}{2}\cdot \cos^{-1} 0$

$\theta = \frac{1}{2}\cdot \left(\frac{\pi}{2}+i\cdot \pi \right)$ , for all $i \in \mathbb{N}_{O}$

$\theta = \frac{\pi}{4} + i\cdot \frac{\pi}{2}$ , for all $i \in \mathbb{N}_{O}$

The first four solutions are:

x: $\sqrt{2}$ $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$

y: 1 -1 1 -1

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

6 0

2 years ago

Get a number 100 by using four sevens (7’s) and a one (1)?

Oksanka [162]

Answer 1: 177 – 77 = 100

Answer 2: (7+7) * (7 + (1/7)) = 100

8 0

2 years ago

Read 2 more answers

a car is traveling at a stead rate of speed. the points (1,40) and (3,y) appear on a graph of the cars distance over time. what

maria [59]

Answer:

Do you have a graph?

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

a movie ticket cost $9. a concert ticket cost $45. which equation can be use to find how many times as much the concert ticket c

Maurinko [17]

Answer:

9x5=45

Step-by-step explanation:

4 0

3 years ago

Round 45,621 to the nearest hundred.

Schach [20]

Answer:

The answer is 45600 as 621 is less than 650 and should be rounded down.

4 0

2 years ago

Read 2 more answers