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antoniya [11.8K]
3 years ago
12

What is the sum? 2x over x^2 + x-4 over 9x

Mathematics
1 answer:
Allushta [10]3 years ago
4 0

Answer:

Step-by-step explanation:

2x/x^2 + x-4/9x  =  2/x + (x-4)/9x            {LCM = 9x}

                            = 2*9/x*9 + (x-4)/9x

                            =  18/9x + (x-4)/9x

                            = 18 + x -4 / 9x

                            = 14 + x /9x

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I need help on khan academy and I’m willing to pay half right when you start the work and when you finish all the work I’ll pay
harina [27]

Answer:

x\approx 50^\circ

Step-by-step explanation:

c^2 = a^2 + b^2 - 2ab(cos(C))

See the figure below to get the values as:

7^2=7^2+9^2-2\left(7\right)\left(9\right)cos\left(x\right)\\\\cos(x)=\frac{7^2+9^2-7^2}{2\cdot \:7\cdot \:9}\\\\x\approx 50^\circ

There are multiple concepts to solve this problem. This is one of the concept used in high school. Other concept to solve this problem is to use the concept of isosceles triangle. An isosceles triangle is a triangle with (at least) two equal sides. The angles shared by the two equal sides are also equal. So that the sum of all the three angles will add up to 180.

x+x+80=180\\\\2x=100\\\\x=50^{\circ}

Best Regards!

5 0
4 years ago
The points (10, w) and (3, 1) fall on a line with a slope of 0. What is the value of w?
sveticcg [70]

Answer:

w = 1

Step-by-step explanation:

If the slope is 0, then this line will be horizontal.

This means that the y value will be the same for all points on the line.

Since we are given the point (3, 1), we know that the y value is 1. This means all other points on the line will have 1 as the y value.

So, w is equal to 1 because it is the y value in that ordered pair.

4 0
4 years ago
a citrus grower ships grapefruit in boxes of 10. one season, the grower shipped 20,400 boxes of grapefruit. how many grapefruit
Mazyrski [523]
20,400 / 10 = 2040 boxes were shipped
6 0
3 years ago
Read 2 more answers
Find the slope-intercept form of the equation of a line that passes through the given points.
anygoal [31]

Answer:

y=3x+b

Step-by-step explanation:

finding slope:

slope= y2-y1/x2-x1

-2--5/3-2

3/1

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i'm not sure how to find the y-intercept using this format but hope this kinda helped!

7 0
4 years ago
Read 2 more answers
Which operations involving complex numbers have solutions represented by point A on the graph? PLEASE HELP
Alina [70]

Answer:

Option 3 and 4

Step-by-step explanation:

We have to find the solutions represented by point A on graph

The point A is represented by (-6,7i)

Lets check all options one by one

1.

2(1-2i)-(4+3i)\\= (2-4i)-(4+3i)\\=2-4i-4-3i\\=2-4-4i-3i\\=-2-7i

This option is not correct

2.

2(1+2i)+(-4-3i)\\=(2+4i)-4-3i\\=2+4i-4-3i\\=2-4+4i-3i\\=-2+i

This option is also not correct

3.

2(-1+2i)-(4-3i)\\=(-2+4i)-4+3i\\=-2+4i-4+3i\\=-2-4+4i+3i\\=-6+7i

This solution is same as point A so this option is correct

4.

(-2+4i)+(-4+3i)\\=-2+4i-4+3i\\=-2-4+4i+3i\\=-6+7i

Solution same as point A so this is correct option.

5.

(-2-4i)+(4-3i)\\=-2-4i+4-3i\\=-2+4-4i-3i\\=2-7i

Not correct

The correct options are option no 3 and 4 ..

7 0
4 years ago
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