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3 years ago

Which angles are supplementary? A. ∠AFC and ∠CFB B. ∠AFC and ∠DFB C. ∠AFB and ∠CFD D. ∠AFD and ∠CFB

Mathematics

2 answers:

GenaCL600 [577]3 years ago

8 0

Answer:

ok bet

Step-by-step explanation:

Kitty [74]3 years ago

7 0

Ok os i believe the answer is C ,becuase it need s to be 180 degress and those two angles are 180 degrees
;)

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PLEASE help xº 520 38° 220° X = degrees

muminat

Step-by-step explanation:

by complete angle

x+38+52+220=360

x+310=360

x=360-310

x=50

6 0

3 years ago

Use the quadratic formula to solve x² + 9x + 10 = 0. What are the solutions to the equation?

jok3333 [9.3K]

Answer:

$-1.30\ and\ -7.70$ (2 decimal places)

Step-by-step explanation:

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

-----------------------------------------------

$x^2+9x+10=0$

Plug in values:

$x=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

First value of x:

$x=\frac{-9+\sqrt{41}}{2}=-1.30$ (2 decimal places)

Second value of x:

$x=\frac{-9-\sqrt{41}}{2}=-7.70$ (2 decimal places)

6 0

3 years ago

Timothy has computer class 3 times a week. Each class is 45 minutes long. How many hours of computer class does Timothy have per

bulgar [2K]

18 classes
i might be wrong

6 0

3 years ago

I WILL MARK BRAINLIEST! PLS HELP!At an ice-breaker event, ten people are randomly assigned to seats at a round table. Patrick an

Sergio039 [100]

Answer:

$\frac{8}{10}$

if you need it simplified then

$\frac{4}{5}$

Step-by-step explanation:

10 people then theres 10 seats, that'll be the total.

2 people and 2 seats.

10-2= 8

so that will make

$\frac{8}{10}$

8 0

3 years ago

The speed of a tidal wave in meters/second is given by the square root of the product of the acceleration due to gravity on Eart

fredd [130]

Answer:

70 m/s

Step-by-step explanation:

"The speed of a tidal wave in meters/second is given by the square root of the product of the acceleration due to gravity on Earth (9.8 meters/second2) and the depth of the ocean in meters":

The sentence above can be interpreted into the equation shown below (letting speed of tidal wave be "s", acceleration due to gravity be "g", and depth be "d"):

$s=\sqrt{g*d}$

Given d = 500 and g = 9.8, we find speed (s):

$s=\sqrt{g*d} \\s=\sqrt{(9.8)*(500)} \\s=\sqrt{4900}\\ s=70$

Hence, the speed is 70 meters per second.

6 0

3 years ago