17y-8=12+13y
4y=20
y=5
11x-4=117
11x=121
x=11
This is the answer, and I have steps, if have any questions, message me.
Answer:
50 of D and 10 of C
Step-by-step explanation:
First of all, put this data into 2 equations.
You sold 60 items, so C+D=60
C is $5 so we can represent it by 5C
D is $7 so we can represent it by 7D
You made $400 total from C and D, so 5C+7D=400
We can use simultaneous equations to solve this.
To eliminate one of these variables, we'll multiply the first one by 5 to make it 5C like the other.
5(C+D=60) (make sure you multiply both sides.)
so 5C+5D=300
5C+7D=400
Now we solve it:
5C-5C+7D-5D=400-300
7D-5D=100
2D=100
D=50
Now we can substitute this with one of the equations to find C
C+50=60
C=60-50
C=10
so, (10x5)+(50x7)=400
The times at which the ball is on the ground
Answer:
<h2>x = 8m</h2>
Step-by-step explanation:
Let the two triangles be represented as A and B.
Given two triangles with sides 12m 20m 16m and 6m 10m x.
Lengths of sides of triangle A = 12m, 20m, 16m
Lengths of sides of triangle B = 6m, 10m, x
It can be seen that each length of triangle A are twice that of B i.e triangle B dilated by a factor of 1/2.
A = 2B
<u>Considering the 16m length in triangle A and comparing it with the 'x'm length in triangle B, we can get the unknown length x as shown;</u>
16 = 2x
x = 16/2
x = 8m
Answer:
Answer is 7.
Step-by-step explanation:
To find it is said that 20% of players are 35.
In maths most of the time especially in percentages, of means x(multiply).
And also what does percentage actually mean? In means out of 100.SO if it is 50% then it means 50÷100,if it is 37% it means 37÷100.
So using both of what I said., it will be easy.
Let us use both of those here..
20÷100 x 35=7
SIMPLE...