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3 years ago

15

What is the answers ?

2 answers:

Lorico [155]3 years ago

7 0

Ok so the 2nd and 3rd are obviously wrong
there must be a craxy pattern

hmm
1+4=5 corerct

2+5=7
that is 5 away from 12

3+6=9
that is 12 away from 21

I see it
1+4=5
2+5+5=12
3+6+12=21
so the pattern is takee the result from the last equaton and add to the next

see how it goes, 1,2,3, then jumps to 8
we need to buildto 8
4+7+21=32
5+8+32=45
6+9+45=50
7+10+50=67
8+11+67=86

the result is 86

BartSMP [9]3 years ago

4 0

19 because you have to have to add them

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Please simplify! 1+x-1+12x=12x-3

Zina [86]

Answer:

x = - 3

Step-by-step explanation:

1 + x - 1 + 12x = 12x - 3

Subtract 12x from both sides.

1 + x - 1 = - 3

Combine like terms on the left side.

x = - 3

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3 years ago

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Which ordered pair (x, y) is a solution to given system of linear equations?

patriot [66]

Answer:

$(\frac{1}{6}, \frac{1}{2})$ or $(0.167,0.5)$

Step-by-step explanation:

Given

$3x + y =1$

$15x + y = 3$

Required

Determine the solution

We'll solve using elimination method.

Subtract the first equation from the second:

$15x + y = 3$

$3x + y =1$

$--------$

$15x - 3x + y - y = 3 - 1$

$15x - 3x + y - y = 3 - 1$

$15x - 3x = 3 - 1$

$12x = 2$

Make x the subject:

$x = \frac{2}{12}$

$x = \frac{1}{6}$

$x =0.167$

Substitute $\frac{1}{6}$ for x in the first equation

$3x + y =1$

$3(\frac{1}{6}) + y = 1$

$\frac{1}{2} + y = 1$

Make y the subject

$y = 1 -\frac{1}{2}$

$y = \frac{2-1}{2}$

$y = \frac{1}{2}$

$y = 0.5$

Hence, the solution is:

$(\frac{1}{6}, \frac{1}{2})$ or $(0.167,0.5)$

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2 years ago

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2 years ago

A man invest 5,200,part at 4% and the balance at 3%. If his total income for the two investments is $194,how much money did he i

Fed [463]

Let the amount invested at 4% be = x

Let the amount invested at 3% be = y

Given is:

$x+y=5200$ or $x=5200-y$ .... (1)

As, total income for the two investments is $194, so equation is:

$0.04x+0.03y=194$ ....(2)

Putting value of x from (1) in (2)

$0.04(5200-y)+0.03y=194$

$208-0.04y+0.03y=194$

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And x=5200-y

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6 0

2 years ago