18a+9 is the equivalent expression.
Answer:
sandwiches is £1.8
bottle water = £1.2
Step-by-step explanation:
Given data
let cheese sandwiches be x
and bottle water be y
3x+2y= 7.8------------1
5x+4y= 14.20---------2
solve 1 and 2
3x+2y= 7.8------------1*5
5x+4y= 14.20---------2*3
15x+10y= 39
- 15x+12y= 42.6
-2y = -3.6
y= 3.6/2
x=1.8
Put x= 1.8 in 1
3(1.8)+2y= 7.8
5.4+2y= 7.8
2y= 7.8-5.4
2y=2.4
y= 2.4/2
y= 1/2
Hence cheese sandwiches is £1.8
bottle water = £1.2
Step-by-step explanation:
Let a be the total score of Div. A
Let b be the total score of Div. B
given,
as equation 1.
and
as equation 2.
Now multiply equation 2 by 1/20 to eliminate b to solve for a.
take this new equation as equation 3.
now we will use equation 1 + equation 3 to eliminate b to solve for a.
Div.A total score = 600
Average Score = Total Score / Number of students.
Given a point on the xy-plane, a refrection across the y axis will change the sign of the x-value of the point.
For example, given a point (x, y) on the xy-plane, a refrection across the y-axis will transform the point to (-x, y)
Thus, give a triangle ABC <span>with vertices A(–3, 5), B(–2, 2), and C(–4, 3), reflected across the y-axis, the image of the triangle will have vertices which will have the signs on the x-values of the original triangle changed.
Thus, the vertices of the image will be A'(3, 5), B'(2, 2), and C'(4, 3).
Therefore, given that a student determined one of the vertices on the image to be (2, 2). It can be seen that the student performed the refrection correctly.
</span>
P- pineapple
p-pear
m-mango
a-apple
a=4*m
p=2*a
P=m
8 Pineapples.....8 mangos
a=4*m= 4*8=32 apples
p=2*a=2*32=64 pears
