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4 years ago

A certain triangle has two 45° angles. What type of triangle is it?

1 answer:

3 0

Answer is a right triangle. The angles of a triangle must add to 180 degrees.
You have two 45 degree angles
45 + 45= 90
Now you need 1 more angle to equal 180
180- 90= 90
A right angle is 90 degrees. A right triangle has one right angle and two acute.

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Convert Зcis 180° to rectangular form.<br> А. -3<br> в. -3i<br> с. з<br> D. Зі.

Sunny_sXe [5.5K]

Answer:

-3

Step-by-step explanation:

$3 cis(180^\circ)$ means $3(\cos(180^\circ)+i \sin(180^\circ))$

What is the $x$ -coordinate value that corresponds to $\theta=180^\circ$ . That value is -1.

What is the $y$ -coordinate value that corresponds to $\theta=180^\circ$ . That value is 0.

So this implies $\cos(180^\circ)=-1 \text{ and } \sin(180^\circ)=0$ .

$3 cis(180^\circ)$

$3(\cos(180^\circ)+i \sin(180^\circ))$

$3(-1+i (0))$

$3(-1+0)$

$3(-1)$

$-3$

5 0

3 years ago

1. the sum of two rational numbers is always always a (irrational number / rational number)

Blizzard [7]

One

The sum of two rational numbers is always rational. sqrt(9) + sqrt(25) = 3 + 5 which is rational. sqrt(16/100) = 4/10 = 2/5 is also rational. 3/28 is rational as well.

Two

Those are irrational. sqrt(10) + pi = ???? You cannot reduce this to any kind of fraction. Two irrationals always give a rational.

Three

The irrational number controls the answer. 10 + sqrt(5) is irrational. The 10 is OK. It is raional, but sqrt(5) is not a rational number.

8 0

3 years ago

Find the greatest common factor

Lerok [7]

Answer:

(3b + 4) is the greatest common factor

Step-by-step explanation:

$3b(2b- 3)+4(2b-3) = 0 \\ {6b}^{2} - 9b + 8b - 12 = 0 \\ {6b}^{2} - b - 12 = 0 \\ {6b}^{2} - 9b + 8b - 12 = 0 \\ 3b(2b - 3) + 4(2b - 3) = 0 \\ (2b - 3)(3b + 4) = 0$

5 0

4 years ago

The top is an example of what it should look like ) helpp please

lidiya [134]

Answer:

$12.15/3

3 games

$4.05

It would cost $4.05 per game.

Step-by-step explanation:

4 0

3 years ago

Please show picture 6×(3+2) divided by 10 ??? Please show picture

Mumz [18]

:) There's no picture but I can solve this for you :)

Do PEMDAS

Parentheses
Equations
Multiplication
Division
Addition
Subtraction

$\frac{6(3+2)}{10} \\ \\ 3 + 2 =5,right? \\ \\ \frac{6(5)}{10} \\ \\ 6(5)= 30,right ? \\ \\ \frac{30}{10} = 3,right \\ \\ \\ \\ Answer: 3$

Good luck on your assignment and enjoy your day!

~ $MeIsKaitlyn:)$

5 0

3 years ago