How do you get the answer?

Mathematics

1 answer:

pochemuha4 years ago

3 0

Base = distance from O to C = x+1 units
Height = vertical distance from x axis to point B = x units

Area = Base*Height
42 = (x+1)*x
42 = x^2+x
x^2+x = 42
x^2+x-42 = 0
(x-6)(x+7) = 0
x-6=0 or x+7=0
x=6 or x=-7

Ignore the negative x value. It makes no sense to have a negative height.

The only practical solution is x = 6

If x = 6, then x+1 = 6+1 = 7

So the base is x+1 = 7 and the height is x = 6

You might be interested in

A class 4 truck weighs between 14,000 and 16,000. What is the weight range in tons?

Evgen [1.6K]

A ton is 2000 pounds. so it would be between 7 and 8 tons

8 0

3 years ago

PLEASE HELP

MaRussiya [10]

Answer:

x=54

Step-by-step explanation:

3x-52=2x+2

3x-2x =52 +2

6 0

3 years ago

Help please ITS OF TRIGONOMETRY<br>PROVE

Flauer [41]

Answer:

The equation is true.

Step-by-step explanation:

In order to solve this problem, one must envision a right triangle. A diagram used to represent the imagined right triangle is included at the bottom of this explanation. Please note that each side is named with respect to the angle is it across from.

Right angle trigonometry is composed of a sequence of ratios that relate the sides and angles of a right triangle. These ratios are as follows,

$sin(\theta)=\frac{opposite}{hypotenuse}\\\\cos(\theta)=\frac{adjacent}{hypotenuse}\\\\tan(\theta)=\frac{opposite}{adjacent}$

One is given the following equation,

$\frac{sin(A)+sin(B)}{cos(A) +cos(B)}+\frac{cos(A)-cos(B)}{sin(A)-sin(B)}=0$

As per the attached reference image, one can state the following, using the right angle trigonometric ratios,

$sin(A)=\frac{a}{c}\\\\sin(B)=\frac{b}{c}\\\\cos(A)=\frac{b}{c}\\\\cos(B)=\frac{a}{c}$

Substitute these values into the given equation. Then simplify the equation to prove the idenity,

$\frac{sin(A)+sin(B)}{cos(A) +cos(B)}+\frac{cos(A)-cos(B)}{sin(A)-sin(B)}=0$

$\frac{\frac{a}{c}+\frac{b}{c}}{\frac{b}{c}+\frac{a}{c}}+\frac{\frac{b}{c}-\frac{a}{c}}{\frac{a}{c}-\frac{b}{c}}=0$

$\frac{\frac{a+b}{c}}{\frac{a+b}{c}}+\frac{\frac{b-a}{c}}{\frac{a-b}{c}}$

Remember, any number over itself equals one, this holds true even for fractions with fractions in the numerator (value on top of the fraction bar) and denominator (value under the fraction bar).

$\frac{\frac{a+b}{c}}{\frac{a+b}{c}}+\frac{\frac{b-a}{c}}{\frac{a-b}{c}}$

$\frac{\frac{a+b}{c}}{\frac{a+b}{c}}+\frac{\frac{-(a-b)}{c}}{\frac{a-b}{c}}$