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Natasha2012 [34]
2 years ago
13

I need help with this in math right now I'm struggling

Mathematics
1 answer:
kaheart [24]2 years ago
3 0

Answer:

y=-4x-2

Step-by-step explanation:

linear function, y = mx+c

the y intercept of the graph,c, is -2

thus y = mx - 2

substitute a point on the graph into the equation, (2,-1)

2 = m(-1) -2

m = - 4

thus equation of graph is y = -4x-2

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Find the value of 2abcosC.
Strike441 [17]

Answer:

7

Step-by-step explanation:

a=2

b=2

c=1

2ab cos C=a²+b²-c²=2²+2²-1²=4+4-1=7

6 0
3 years ago
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36x34=?<br> 45x67=?<br> Without google or calculator <br><br> (I already know the answers)
stellarik [79]

Answer:

1224 and 3015

Step-by-step explaination

You have to do 36 lined up with 34 to get 1224

Make sure you add a zero the second time you multiply

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3 years ago
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Sergio039 [100]
64 ounces

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4 0
3 years ago
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Tom, Mary and Bill are aged 10,12 and 15 years respectively. They share 259 euros in the same ratio as their ages. Find how much
tigry1 [53]

Answer:

70 , 84 , 105

Step-by-step explanation:

sum their ages , 10 + 12 + 15 = 37

divide the amount by this sum to find the value of one part of the ratio.

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10 parts = 10 × 7 = 70 euros ← Tom's share

12 parts = 12 × 7 = 84 euros ← Mary's share

15 parts = 15 × 7 = 105 euros ← Bill's share

7 0
2 years ago
What is $20.00 less than 2.5 times the amount of $64.80
Lera25 [3.4K]
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6 0
4 years ago
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