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saul85 [17]
2 years ago
13

4a) The vertices of a triangle are P(-7, -4) Q(-7, -8) and R(3, -3). What are the

Mathematics
1 answer:
aniked [119]2 years ago
6 0

Answer:

P' (-4 , -7)

Step-by-step explanation:

reflection over y=x, (x,y) -> (y,x)

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Mr. Jones bought a cloth of length 3890 cm. How much is the length in m and cm?
devlian [24]

Answer:

38m and 90cm

1m = 100cm

3890cm = 38m and 90cm

Step-by-step explanation:

1m = 100cm

3890cm = 38m and 90cm

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2 years ago
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Help me with this,i really forgot how to do these type of questions
Montano1993 [528]
Work=speed times time (my equation to help me figure it out)

ok, 10 men take 84 days to complete a job
therefor, each man completes 1/10 of the job in 84 days
each man does 1/840 of the job per 1 day

so, if we had 5 more, or 15 men

15 times 1/840 times xdays=1 job complete
15/840 times xdays=1job
times both sides by 840/15
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5 0
3 years ago
Which of the following are solutions to the equation below? Check all that apply. 4x2 + 4x + 1 = 9​
Vilka [71]

Answer:

4x^2 + 4x + 1=9

4x^2 + 4x - 8=0

Dividing both sides by 4

x^2 + x -2=0

It can be written as

x^2 + 2x - x - 2=0

x(x+2) -1(x+2)=0

taking (x+2) as common on LHS

Then, (x+2)(x-1)=0

Now first equate x+2=0  ie x=-2

then                 x-1=0 ie x=1

Therefore, x has two values(roots)

that is -2,1

4 0
3 years ago
If someone does this I'll give you 5 stars and follow you!​
Sonja [21]

Answer:

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I need help fast! I’m taking the test now!
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it's the last one I think

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