For a) you would start at positive 4 then go up 2 then right 2 and repeat that
I am good at science. Why do you ask?
:)
The answer is B.
If you multiply x by 2 then you should get y.
Option B,C and D are correct.
Step-by-step explanation:
We need to determine which statements are true about
Checking the options:
The term x/4 is quotient of 2 variables is not true.
2gh-(3+7) is the difference of two terms is true
Co-efficient of the expression are 2 and 1/4 is true because, co-efficient are terms that comes with variables.
The expression 3+7 is sum of two numbers is also true.
Option B,C and D are correct.
Keywords: Solving Equations
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In <span>equilateral triangle all sides are equal =x,
from right triangle that is formed by </span>apothem , height 7*3= 21
hypotenuse /opposite leg = sin angle,
hypotenuse is a side of triangle =x, opposite leg is apotheme =21,
angle in equilateral triangle =60⁰
21/x= sin 60, x*sin60=21, x=21/sin60, x=21/(√3/2), x=42/√3
Area of triangle =1/2 x*x*sin angle
Area of triangle =1/2 *42/√3*42/√3*sin 60=1/2*(42²/3)*(√3/2) ≈ 255 cm²
this is just second way to do this problem, that I did at first (either way is correct)
<span> apothem divides one side by half,
so we get small right triangle with sides x hypotenuse, x/2 is one leg , and 21 is another leg
</span>by Pythagorean theorem
x²=(x/2)² +21²
x²-x²/4=441
3x²/4=441
3x²=441*4=1764
x²=1764/3
x=42/√3
Area of triangle =1/2*base *height =1/2*42/√3 *21≈255 cm²