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Jimmy has ten apples. His friend, Misty, took 4x-9/vp*LOG(100) of his ten apples. (Calculate) What is the mass of the sun?

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Posted on Dec 02, 2017

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The equation of the straight line PQ is 3-2kx+k+1=12,calculate,in each case,the numerical value of k if the line PQ is parrallel to the line y=4x+7;is perpendicular to the line y=4x+7;


that sounds like a problem about "slopes" so I am looking at using the derivative, which is basically the slope of the graph.
- the equation of line PQ can be simplified to y(x) = -2kx + k -8
- derivative relative to X (k is a constant) gives you -2k
- derivative of y(x) = 4x + 7 relative to x gives you 4

if the lines are parallel then the slopes are equal:
-2k=4 gives you k = -2 => your function becomes y = 4x - 8

if the lines are perpendicular the two slopes multiplied together give you -1:
-2k * 4 = -1 gives you k=1/8 => function becomes y = -1/4x - 7/8 or in other words y = -(2x+7)/8

I have made graphic representation and it looks to be correct.
I hope it makes sense.

Apr 12, 2017 | Homework

1 Answer

The equation of the straight line PQ is (3-2k)x+(k+1)=12,calculate,in each case,the numerical value of k


I think you are missing some information in the question. Please provide the complete question.

Apr 12, 2017 | Homework

1 Answer

What is the slope and y intercept of -2,1 and 5,-5


slope or m = (y2 -y1)/(x2-x1)
always start with the same point.

m = (1 - (-5))/(-2-5)
m = (1 + 5)/(-7)
m = 6/-7
m = -6/7

The y-intercept is the b in the equation y=mx+b.
We can use either point to calculate b. Let's use (-2,1). So every time we see x, we put in -2, and every time we see y, we put in 1.

y = -6/7x + b
1 = -6/7 (-2) + b
1 = 12/7 + b
1 = 1 5/7 + b
-5/7 = b
So, y = -6/7x - 5/7

To check, we substitute in the other point and see if the left side is equal to the right side.

LS RS
-5 -6/7(5) - 5/7
-5 -30/7 - 5/7
-5 -35/7
-5 -5
LS = RS
QED


Good luck,

Paul

Mar 23, 2017 | Homework

1 Answer

Let f(x)=7x 2 ?4x+8 and g(x)=?6+4x?7x 2 . What is f(x)+g(x) ?


f(x) + g(x) would just be the two functions added together.

f(x) + g(x) = 7x 2?4x+8 + (?6+4x?7x 2)

Sorry, I don't understand your initial functions.

Good luck.

Paul

Feb 07, 2017 | Homework

2 Answers

I need your help to tell me what 1925 is rounded to because at school I am really struggling and I look a bit silly in front of everyone and I get enbaressed


That depends on what you want it rounded to,

To the nearest thousand: 2000
To the nearest hundred: 1900
To the nearest ten: 1930

Feb 01, 2017 | Homework

1 Answer

How to calculate my grade based on total points?


to calculate your grade base on total points you have to know:
290 points represent the 100% so the question is how many percent is 232.17points.
x = (232.17x100) /290
x= 80%
and 80% is B-

Jan 04, 2017 | Homework

1 Answer

What is a quarter worth proportionally to a penny?


It should be 1:4. Reasons
A quarter equals to 25 pennies and a 100 pennies are equal to 1 dollar. So having these sorted out means 1:4

Jan 04, 2017 | Homework

1 Answer

Solve: 7(3x+5) = 8x - (1-4x)?


Let's rewrite as

7(3x+5) = 8x -1(1-4x)
Let's distribute
21x + 35 = 8x -1 + 4x
collect like terms
21x + 35 = 12x -1
Put all the x's on one side by subtracting 12x from both sides
21x -12x + 35 = 12x -1 -12x
simplify
9x + 35 = -1
get all the constants on the right side
9x + 35 - 35 = -1 - 35
9x = -36
divide both sides by 9 to get x by itself
9x /9 = -36/9
x = -4

check in original equation

7(3(-4)+5) = 8(-4) -(1-4(-4))
7(-12+5) = -32 - (1+16)
7 (-7) = -32 - (17)
-49 = -32-17
-49 = -49

Jan 04, 2017 | Homework

1 Answer

Why is the North Pole so cold?


Both the Arctic (North Pole) and the Antarctic (South Pole) are cold because they don't get any direct sunlight. The Sun is always low on the horizon, even in the middle of summer. In winter, the Sun is so far below the horizon that it doesn't come up at all for months at a time.

Jan 04, 2017 | Homework

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