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DochEvi [55]
3 years ago
8

What are the 2 shapes

Mathematics
1 answer:
uysha [10]3 years ago
6 0
A stop sign shape i think

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Triangle PQR where P(1,4), Q(-3,-4),R(7,k) is right-angled at Q. find the value of k
NikAS [45]

Answer:

k = -9.

Step-by-step explanation:

As the triangle is right-angled at Q, by Pythagoras:

PR^2 = PQ^2 + RQ^2

So, substituting the given data and using the distance formula between 2 points:

(7 - 1)^2 + (k - 4)^2 =  (-4-4)^2 + (-3-1)^2 + (7 - (-3))^2 + (k - (-4))^2

36 + (k - 4)^2 = 64 + 16 + 100 + ( k + 4)^2

(k - 4)^2 - (k + 4)^2 = 180 - 36

k^2 - 8k + 16 - (k^2 + 8k + 16) = 144

-16k = 144

k = -9.

8 0
3 years ago
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a corn vendor at a farmers market was selling a bag of 8 ears of corn for $2.56 anithert vendor was selling a bad of 12 for 4.32
maria [59]

Answer:

8 for 2.56

Step-by-step explanation:

THE ANSWER IS IN CENTS.

2.56 ÷ 8 = 0.32 per ear

4.23 ÷ 12 = 0.36 per ear

3 0
3 years ago
Which sum is equivalent to (11k2 + 3k + 1)?
BabaBlast [244]

a) 4k^2 + k – 5) + (7k^2 + 2k + 6)

  11k^2 +3k +1


Choice A

4 0
3 years ago
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Need held with this question
Lapatulllka [165]
The answer to your question is 6u-5/21u-5
3 0
3 years ago
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A=1/2abSinC , make a the subject
tatuchka [14]
A = \frac{absinC}{2}
2A = absinC
\therefore a = \frac{2A}{bsinC}
6 0
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