HELPP ME PLEASEEE!!!!! don’t answer just for points. i’ll report you.

Mathematics

2 answers:

iren2701 [21]3 years ago

7 0

Answer:

A= -2

Step-by-step explanation:

15-a=17

+a +a

15=17+a

-17 -17

-2=a

Arisa [49]3 years ago

4 0

Answer:

-2

15 - (-2) = 17

a = -2

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This is geometry plz

Sergio039 [100]

Answer:

Step-by-step explanation:

a line parallel to the equation would have the same slope (7/8)

so what we know so far is

y = 7/8x + b

since it has to go through point C (-4, 8)

we’ll plug in those values for x and y (x = -4, y = 8)

8 = 7/8(-4) + b

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b = 11.5

so the equation is

y = 7/8x + 11.5

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For circle O, mCD=125° and m

Burka [1]

CA is a diameter of the circle, so $m\widehat{AC}=180^\circ$ , which means $m\angle AOB=m\angle AOD=m\widehat{AD}=180^\circ-m\widehat{CD}=55^\circ$ . Then $m\boxed{\angle ABO}=90^\circ-55^\circ=35^\circ$ .

This means $m\angle CBO=55^\circ-35^\circ=20^\circ$ . Also, if $m\angle AOB=55^\circ$ , then $m\angle BOC=180^\circ-55^\circ=125^\circ$ , which in turns tells us that $m\boxed{\angle BCO}=180^\circ-20^\circ-125^\circ=35^\circ$ .