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pav-90 [236]
3 years ago
7

2x minus y equals 6, x plus y equals negative 3

Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

y=-4, x=1

Step-by-step explanation:

2x-y=6                  x+y=-3

2(-3-y)-y=6            x=-3-y

-6-2y-y=6              x=-3+4

-3y=12                    x=1

y=-4

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Taylor is 2/3 as old as her cousin. the sum of their ages is 45. how old are taylor and her cousin
kiruha [24]
Her cousin is 27 and Taylor is 18 years old
7 0
3 years ago
In circle E shown below, the measure of ∠AED is 98°:
ElenaW [278]
We know that
<span>m Arc DC = 32°

if </span><span>∠AED = 98°
then 
</span>m Arc AD = 98°-----> by central angle

therefore
m Arc ABC=360°-[m Arc AD+m Arc ]----> 360°- [98°+32°]---> 230°

the answer is
m Arc ABC = 230°

3 0
4 years ago
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The tree diagram represents an experiment consisting of two trials.<br><br>P(A and C) = [?]
schepotkina [342]

Yo sup??

To find P(A and C) we have to simply multiply the probabilities of getting an A with that of getting a C

P(A)=0.6

P(C|A)=0.3

P(A and C)=0.6*0.3

=0.18

Hope this helps.

7 0
3 years ago
Are these correct? ILL MARK YOU BRAINLIEST
Oxana [17]

Answer:

Yes

Step-by-step explanation:

1) Cos 300 = Cos (360 - 60) = Cos 60    {Cos 360 - theta = Cos theta}

                                              = 1/2

Sin 300 = Sin (360 - 60) = -Sin 60 = \frac{-\sqrt{3}}{2}

3) 3π/4 = 3*180/4 = 135

Cos 135 = Cos (90 + 45) = -Cos 45 = \frac{-\sqrt{2}}{2}

Sin 135 = Sin (90 + 45) = Sin 45 = \frac{\sqrt{2}}{2}

7 0
3 years ago
A survey was taken of children between the ages of 3 and 7. Let A be the event that the person has 2 siblings, and let B be the
olganol [36]

Answer: Fourth option is correct.

Step-by-step explanation:

Since we have given that

A be the event that the person has 2 siblings.

B be the event that the person does not have a pet.

Since they are not independent events.

Because if P(A|B) = 0.18

in case if they are independent events then, P(A|B) = P(A).

But here P(A) = 0.4

So, they are not independent events.

Hence, Fourth option is correct.

7 0
4 years ago
Read 2 more answers
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