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Art [367]
4 years ago
14

Solve this equation for x x-2y=8

Mathematics
2 answers:
nignag [31]4 years ago
8 0
Im pretty sure the answer is x=-2
Ludmilka [50]4 years ago
6 0
To solve for X

Add 2y to both sides to cancel out:

x-2y=8
+2y +2y
_________
So then,

x=8 + 2y
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It is recommended that an adult drink 64 fluid ounces of water every day. Josey has already consumed 700 milliliters of water. H
faust18 [17]
1.19271 liters.  The reason for this is 64 fluid ounces is 1.89271 liters and 700 milliliters is equal to 0.7 liters.  Take 1.89271 and subtract 0.7 liters and you will get your answer.
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8 0
3 years ago
Read 2 more answers
Triangles and algebra
Elanso [62]

Hello from MrBillDoesMath!

Answer:

x = 10


Discussion:

A plane triangle contains 180 degrees. Adding the angles in the triangle shown in  #8 gives

(4x + 7) + (3x + 13) + 90 = 180


Note the "right angle" shown in the triangle has been replaced by its 90 degree equivalent in the above equation.

Combining like terms gives


( 4x + 3x) + (7 + 13) + 90 = 180

7x + 20 + 90 = 180 =>                      (subtract 90 from each side)

7x + 20 + 90 - 90 = 180 - 90 = 90  =>

7x +20 = 90  =>                                (subtract 20 from each side)

7x + 20 -20 = 90 -20 =>

7x = 70 =>

x 70/7 =10.



Thank you,

MrB

3 0
4 years ago
Which values of x and y would make the following expression represent a real number? (4+5i)(x+yi)
algol [13]

Answer:

So x=4 and y=-5 would work.

Step-by-step explanation:

When you multiply complex conjugates, you get a real result.

Example:

(a+bi)(a-bi)=a^2-b^2i^2=a^2+b^2

I replace i^2 with -1 since i^2=-1.

a^2+b^2 is a real number (there is no imaginary part, no i).

So what is the conjugate of 4+5i?

4-5i

So x=4 and y=-5 would work.

A multiple of the complex conjugate would work as well.

(a+bi)(ca-cbi)

c(a+bi)(a-bi)

c(a^2-b^2i^2)

c(a^2+b^2)

This is still a real number; there is no imaginary part,no i.

5 0
3 years ago
2(x - 25) = 112<br> QUICK HELP
Sonja [21]

Answer:

81

Step-by-step explanation:

2(x - 25) = 112

x - 25 = 112/2

x - 25 = 56

x = 56 + 25

x = 81

6 0
3 years ago
Where can I learn basics of algebra ​
svetlana [45]

Answer:

khan academy

Step-by-step explanation:

khan academy its something that I usually use to study algebra and Geometry this page includes videos with a really good information.

6 0
3 years ago
Read 2 more answers
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