7th grade math equations

7th grade math equations are the basic introduction for students for quadratic equations.

An equation is a mathematical statement, in symbols, that two things are exactly the same (or equivalent). Equations are written with an equal sign, as in the following problem

This algebra tutoring problem explain you more clearly about ,how to form an equation and get the answer for word problems.

Question:-

john traveled 234 miles in 14 days.His trip is for 42 days .Find the number of miles that he can travel in 42 days.


Answer:-

Miles:-  234    x


Days:-   14    42

Unknown quantity is taken as x.

Let's use a technique of cross multiplication from multiplication.com
By cross multiplication,we get

14 x = 234*42

divide by 14 on both sides

we get x=702

So john will travel 702 miles in total 42 days.

Types of angles

Topic:- Angles

In geometry and trigonometry, an angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle .

There are total 5 types of angles.

1. Acute Angle : an angle that is less than 90°, is called as acute angle.
2. Obtuse Angle:an angle that is greater than 90° but less than 180°
3. Right Angle :an angle that is 90° exactly , is called as right angle.Right angle triangle means an angle of a triangle should be 90°.
4. Straight Angle:an angle that is 180° exactly
5. Reflex Angle : an angle that is greater than 180°

We can recognize the angle in the following picture.
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