Answer:
50.265(correct to 5 significant figure)/ 16π
Step-by-step explanation:
=50.265(cor. to 5 sig.fig.)/ 16π
to find the arc length of a sector,we need to use πradius² times (sector's degree divided by 360degree).
Answer:
a.114.4kg
b. 486kg
Step-by-step explanation:
Firstly , we want to know the value with which the apples weigh more than the oranges
To calculate this, we simply subtract the weight of the oranges from that of the apple
Mathematically, that would be ;
300.2-185.8 = 114.4kg
The total weight of the things bought is calculated by adding both weights together
That would be 185.8 + 300.2 = 486 kg
Answer:
6>-11+a
Add 11 on both sides
17>a
You have to have the variable on the left side. In order to do this, you have to also flip the sign.
a<17
Hope I helped!
Answer:
f(x)= 2.2x
Step-by-step explanation:
y=2.2x
Now; interchanging the role of X and y;
x=2.2y
x-2.2=y
then;
f(-2)=-2-4=-6
We label each equation
3x + 4y = 5 (1)
2x – 3y = 9 (2)
We now want to get rid of one of the variables (x or y). Lets get rid of x:
We need (1) and (2) to have the same number of x's so we multiple (1) by 2 and (2) by 3 so they both have 6 x's
6x + 8y = 10 (1)*2
6x - 9y = 27 (2)*3
Now to get rid of the x's we take one of the equations from the other. It is easier to do (2)*3 -(1)*2
6x - 9y = 27 (2)*3
6x + 8y = 10 (1)*2
-17y = 17
If we devide this equation by -17 we get
y = -1
We can plug this value of y into (1) to get
3x -4 = 5
add 4 to both sides of the equation
3x = 9
Divide by 3
x = 3
Now to check put x and y into (2)
6 - (-3) = 9
As this is true, we have the solution
x = 3, y = -1
