All categories

2 years ago

What is the measure of angle B A). 42° B). 138° C). 180° D). 218°

Mathematics

2 answers:

Ostrovityanka [42]2 years ago

8 0

Answer:the measure of angle B is A

Step-by-step explanation:42 is the angle of A and C together so it is the same on the other side

lara [203]2 years ago

3 0

Answer:

ETF

Step-by-step explanation:

You might be interested in

What are the possible outcomes?

vesna_86 [32]

Answer:

A= X,B

B= L,G

C= M,W

The total number of combinations is 12

6 0

3 years ago

8. The measures of two angles in an isosceles triangle are shown in the diagram.

mote1985 [20]

Answer:

Step-by-step explanation:

Because 45 + 2x = 180 divide it by 2 gives 4

8 0

3 years ago

Write out the first few terms of the series Summation from n equals 0 to infinity (StartFraction 2 Over 3 Superscript n EndFract

anyanavicka [17]

Answer:

$\sum\limits_{n=0}^{\infty} \frac{2}{3^n}\frac{(-1)^n}{5^n} = 15/8$

Step-by-step explanation:

The sum you are trying to understand is this.

$\sum\limits_{n=0}^{\infty} \frac{2}{3^n}\frac{(-1)^n}{5^n}$

Remember that in general when you have a geometric series

$\sum\limits_{n = 0}^{\infty} a*r^n$ you have that

$\sum\limits_{n = 0}^{\infty} a*r^n = \frac{a}{1-r}$ and that equality is true as long as $|r| < 1$ .

Therefore here we have

$\sum\limits_{n=0}^{\infty} \frac{2}{3^n}\frac{(-1)^n}{5^n} = \sum\limits_{n=0}^{\infty} 2* \big(\frac{-1}{3*5} \big)^n = \sum\limits_{n=0}^{\infty} 2* \big(\frac{-1}{15} \big)^n$ and $\big|\frac{-1}{15} \big| = \frac{1}{15} < 1$

Therefore we can use the formula and

$\sum\limits_{n=0}^{\infty} 2* \big(\frac{-1}{15} \big)^n = \frac{2}{1-(-1/15)} = \frac{2}{1+1/15} = 30/16 = 15/8$

5 0

2 years ago

Line j passes through points 1,6 and 7,1 line k is parallel to line j. What is the slope of line k?

Mashutka [201]

Slope formula m = (y2-y1) / (x2 - x1)
m = (1 - 6) / 7 - 1)
m = -5 / 6

Slope or parallel lines are the same
Slope = -5/6

6 0

2 years ago

What is a square root of (a-b)^2

Bess [88]

Hello,

$\sqrt{(a-b)^2}=|a-b| \\ 
= a-b\ if\ a \ \textgreater\ b \\
=b-a\ if\ a\ \textless \ b$

4 0

2 years ago