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lora16 [44]
3 years ago
9

If x + 4y = 18 and x - 4y = 2, then x =? A) 2 B) 4 C) 5 D)10

Mathematics
1 answer:
s2008m [1.1K]3 years ago
5 0

Answer:

The Final answer is  option D ) 10

x=10

Step-by-step explanation:

Given:

x + 4y = 18     ......................Equation( 1 )

x - 4y = 2        ......................Equation( 2 )

To Find:

x =?

Solution:

Adding Equation ( 1 ) and ( 2 ) we get

x+4y+x-4y=18+2\\\\2x=20\\\\\therefore x =\frac{20}{10} \\\\\therefore x =10

The Final answer is  option D ) 10

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Can someone help me plzz??
ki77a [65]

Answer:

(0,20)

Step-by-step explanation:

1) we can represent the situation as coordinates

lets have # of texts be "x" variable

lets have bill be "y" as the y variable is always the dependant variable and the cost of the phone bill is dependant upon the number of texts so

y=mx+b-slope-intercept form

coordinates: (50,25) and (100,30)

slope: (30-25)/(100-50)

5/50=1/10

hence slope=1/10

y=1/10x+b

substitute in a coordinate pair into this equation

25=50*1/10+b

25=5+b

b=20

hence y intercept is (0,20)

8 0
2 years ago
Given that (6,-8) is on the graph of f(x), find the
Volgvan

Answer:

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5 0
3 years ago
Write −12.405 as a mixed number in simplest form
serious [3.7K]

Answer:

-12\frac{81}{200}

Step-by-step explanation:

In the decimal of −12,405, leave the −12 and divide 405 by 1000 for now:

\frac{81}{200} = \frac{405}{1000}

Greatest Common Divisor [GCD]: 5

Finally, you attach this back to the −12, giving you -12\frac{81}{200}.

I am joyous to assist you anytime.

3 0
3 years ago
Kim had 13 pencils she gave some pencils to her friend and then she got two new pencils now she has 9 pencils how many pencils d
nika2105 [10]

She gave 4 because 9+4=13

7 0
3 years ago
Please help asap! Leaf chart
Eva8 [605]
Answer is B
Each number under the leaf side is the other half of the stem.
Therefore,
1 | 7 =1.7
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3 | 7 =3.7
So on and so forth.
8 0
3 years ago
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