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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 sum of -3,2,7,12....,132<br> Arithmetic series
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a_1=-3 \\&#10;d=2-(-3)=5 \\&#10;a_n=132 \\ \\&#10;a_n=a_1+d(n-1) \\&#10;132=-3+5(n-1) \\&#10;132=-3+5n-5 \\&#10;132=-8+5n \\&#10;140=5n \\&#10;n=28 \\ \\&#10;S_n=\frac{n(a_1+a_n)}{2} \\&#10;S_{28}=\frac{28(-3+132)}{2}=\frac{28 \times129}{2}=14 \times 129=1806

The sum is 1806.
8 0
3 years ago
How many solutions are there if m &lt; 0 and p &gt; k ? <br><br><br><br> p + m| x + n| = k
neonofarm [45]

9514 1404 393

Answer:

  2

Step-by-step explanation:

The solutions are ...

  p +m|x +n| = k . . . . . given

  m|x +n| = k -p . . . . . . subtract p

  |x +n| = (k -p)/m = (p -k)/-m . . . . . . must have (p-k)/-m ≥ 0

  x = -n ± (p -k)/-m

For the given conditions, m < 0, p > k, we are guaranteed that (p-k)/-m > 0, so there are 2 solutions.

4 0
2 years ago
Pls help i have a math question and I can`t figure out the answer
Svet_ta [14]
I can help! just let me know the question.
4 0
3 years ago
How do I solve this problem step by step mesningbwjat will I do first <br> -17+43+(-5)
nataly862011 [7]

Step-by-step explanation: 1. Distibute the + (if there is no number after it, it means 1), so -17+43-5. 2. Then you just solve from left to right

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3 years ago
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3 years ago
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