Answer:
Step-by-step explanation:
If we want to share £5 to the ratio of 1/3 we should follow this steps :
- our ratio is 1/3 so we should add 1 and 3 together to find the total number of parts : 1+3=4
- divide the total amount by the number of parts : 5/4 = 1.25
- multiply each number in the ratio by 1.25 : 1.25*1=1.25 and 1.25*3=3.75
the answer is 1.25 and 3.75
It was obvious from the beginning that the answer would be the last one since ut had two numbers
- following the same steps you get again in the second question :
6 ; 14
It should be a right angle (90º).
X=162, if you multiply 18*9 which is the way to get the answer you get 162
This is a system of equations.
First, you set everything in terms of y.
Take the first equation and move set everything equal to y
y=0+2x
Since it’s 0, you don’t need to put it, so
y=2x works.
Then, you plug y=2x into the bottom equation, for the y.
-7x +3(2x)=2. You do this because now you have the same variable for both and it can be solved easily.
Then you can simplify.
-7x+3x = 2
Then combine like terms.
-4x = 2
Divide by -4 on each side.
x = -1/2
So, now that you have x, you can plug in your x-value back into the top equation.
-2(-1/2) + y = 0
Combine like terms
1+y=0
Get y by itself
y=-1
There you have it!
You can check by plugging in both values to any of the equations. We will use the top one here.
-2(-1/2) + (-1) =0
+1 + -1 = 0
It works!
So,
X= -1/2
Y= -1
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=(-4/5)^2 * -3/50
square -4/5 first; remember -4/5^2 is the same as -4/5 * -4/5
=(-4/5 * -4/5) * -3/50
multiply -4 numerators; multiply 5 denominators
=(-4 * -4)/(5 * 5) * -3/50
=16/25 * -3/50
multiply numerators 16 & -3; multiply denominators 25 & 50
=(16 * -3)/(25 * 50)
= -48/1250
simplify by 2
= -24/625 (or -0.0384)
ANSWER: -24/625 (or -0.0384)
Hope this helps! :)
