2 years ago

I don't really understand this problem

Mathematics

1 answer:

yKpoI14uk [10]2 years ago

4 0

Complementary angles add up to 90 (there should be a right angle in the diagram)

x+20+x+10 needs to equal 90 where x=30

Left angle is measured 30+20=50 degrees

Angle on the right is measured 30+10=40 degrees

You might be interested in

HELP FAST PLEASE!!!

Alisiya [41]

Answer:

$y = -0.75x + 9.5$

Step-by-step explanation:

Equation of a circle is given as :

$(x-a)^{2} + (y-b)^2 = r^{2} \\(x-6)^{2} + (y-5)^2 = 4^{2}\\x^{2} - 12x + 36 + y^{2} -10y + 25 = 16\\x^{2} - 12x + y^{2} -10y + 45 = 0\\$

Take the derivative of the above with respect to x

$2x - 12 + 2y dy/dx - 10 dy/dy = 0\\\frac{dx}{dy} = \frac{6 - x}{y-5} \\At (2,8) dy/dx = (6-2)/(8-5) = 4/3\\dy/dx = 4/3\\The slope of the tangent to the circle, m = \frac{-1}{dy/dx} \\m = \frac{-1}{4/3}\\m= -0.75$

The equation of the tangent is given by :

$y - y_{1} = m(x - x_{1})\\ y - 8 = -0.75(x - 2)\\y - 8 = -0.75x + 1.5\\y = -0.75x + 9.5$

8 0

2 years ago

Read 2 more answers

The Hunt family's pancake recipe uses 2 teaspoons of baking powder for every 1 3 of a teaspoon of salt. How much baking powder w

Amiraneli [1.4K]

I think it would be 6

4 0

2 years ago

Y=-2x + 1<br> What is the value of y? (-5,___)

seraphim [82]

Answer: y=−2x+1

Step-by-step explanation:

5 0

2 years ago

A will states that 8/9 of an estate is to be divided among relatives. Of the remaining estate, 1/5 goes to the american cancer s

LuckyWell [14K]

8/9 - 1/5
= 5(8/9)-9(1/5)
=(40/45)-(9/45)
=31/45

therefore 31/45 of the estate would go to the American cancer society

4 0

2 years ago

What is The Greatest Common Factor of 21 and 63?

Ksenya-84 [330]

It should be 7. No bigger number can go into either.

5 0

1 year ago

Read 2 more answers

I don't really understand this problem​

I don't really understand this problem