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3 years ago

What is the value of x and y of this problem X-3y=10

Mathematics

2 answers:

Eduardwww [97]3 years ago

5 0

Y=-1
x=7
7-3(-1)=10
7+3=10

kvv77 [185]3 years ago

3 0

X = 10 + 3y (bring the 3y to the other side of the equation and change the sign in front)
-3y = 10 - x
3y = - (10 - x)
3y = -10 + x
y = (-10 + x) / 3
There are many possible answers for this so you could leave it as the equations above

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Write an equation of the line that is perpendicular to y = 1/2x + 3 and passes through the point (10, -5).

o-na [289]

Answer:

Option A) y = -2x + 15

Step-by-step explanation:

step 1

Find the slope of the line perpendicular to the given line

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

The equation of the given line is

$y=\frac{1}{2}x+3$

The slope of the given line is $m=\frac{1}{2}$

therefore

The slope of the line perpendicular to the given line is

$m=-2$

step 2

Find the equation of the perpendicular line in point slope form

$y-y1=m(x-x1)$

we have

$m=-2$

$point\ (10,-5)$

substitute

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Convert to slope intercept form

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4 years ago

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attashe74 [19]

Answer:

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Step-by-step explanation:

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2 years ago

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$750,000 is what percent of $3,000,000?<br> Please help

velikii [3]

Answer:

Step-by-step explanation:

Solution for 750000 is what percent of 3000000:

750000:3000000*100 =

(750000*100):3000000 =

75000000:3000000 = 25

Now we have: 750000 is what percent of 3000000 = 25

Question: 750000 is what percent of 3000000?

Percentage solution with steps:

Step 1: We make the assumption that 3000000 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$x.

Step 3: From step 1, it follows that $100\%=3000000$100%=3000000.

Step 4: In the same vein, $x\%=750000$x%=750000.

Step 5: This gives us a pair of simple equations:

$100\%=3000000(1)$100%=3000000(1).

$x\%=750000(2)$x%=750000(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{3000000}{750000}$

100%

x%=

3000000

750000

Step 7: Taking the inverse (or reciprocal) of both sides yields

$\frac{x\%}{100\%}=\frac{750000}{3000000}$

100%=

750000

3000000

$\Rightarrow x=25\%$⇒x=25%

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kakasveta [241]

< = less than

> = greater than

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Your answer is the 4th option because:

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