3 years ago

How to solve for x and y

Mathematics

1 answer:

KonstantinChe [14]3 years ago

4 0

7 is the answer for both

You might be interested in

5. Find cos theta if sin theta= -12/13 and tan theta > 0. (6 points)

ziro4ka [17]

$\text{Given that,}\\\\\sin \theta = -\dfrac{12}{13}\\\\\implies \sin^2 \theta = \dfrac{144}{169}\\\\\implies 1- \cos^2 \theta = \dfrac{144}{169}\\\\\implies \cos^2 \theta = 1- \dfrac{144}{169}\\\\\implies \cos^2 \theta = \dfrac{25}{169}\\\\\implies \cos \theta = \pm \sqrt{\dfrac{25}{169}} = \pm \dfrac 5{13}\\\\\\\text{Since,}~ \tan \theta >0,\\\\\cos \theta =- \dfrac{5}{13}$

8 0

2 years ago

The floor at a roller skating rink is 72.25 feet long and 51.5 feet wide. How much longer is the rink than it is wide?

Phoenix [80]

72.25 - 51.5= 20.75
it is 20.75 feet longer

3 0

3 years ago

Marina is paid $ 28 per hour and works 7 days per hour. She recives one paid day off foe each days that shd works what is her tr

Jobisdone [24]

I believe her hourly wage is $14/h because since she works an unpaid day for every day she does work. Therefore the 50% of her daily wage goes to the next day...

3 0

2 years ago

Find the distance between A(2,3,5) and B(6,7,-2) (pictures of the answer above)

scoray [572]

Answer:

I think it's B (Sorry if im wrong)

3 0

2 years ago

Find x+y+z from the following figure

hoa [83]

Step-by-step explanation:

the inner top vertex angle seems to be 90°, so x = 90° too. all angles around a single point in one side of a line are in total 180°.

also, remember, all angles inside a triangle always sum up to 180°.

so, the third inner angle of the triangle is

180 - 90 - 40 = 50°.

that makes z = 180 - 50 = 130°

and y = 180 - 40 = 140°.

8 0

2 years ago