For the answer tot he question above, let the number of t-shirts are represented by 't'
number of sweaters are represented by 's'
cost of 1t=10 and cost of 1s=20 so
10t+20s=2000 or (factor out the 10 if you want to simplify)
10(t+2s)=10(200)
divide both sides by 2
t+2s=200
Answer:
That is right if what you are asked is to mirror the value of b to a
Step-by-step explanation:
F(x^2) = x^2 - 3
5f(x^2) = 5x^2 - 15 = 2x - 8
Placing all the terms on the left side, we get:
5x^2 - 2x - 7 = 0 which factorises to
(5x - 7)(x + 1) = 0
So, x = 7/5 or x = -1
But x is non-negative, so x = 7/5 = 1 2/5
C is the answer.
There are 28 right handed students in class
<em><u>Solution:</u></em>
Given that, there are 32 students in a class
The ratio of left-handed students to right- handed students is 1 : 7
Let the number of left handed students be 1x
Let the number of right handed students be 7x
<em><u>To find: Number of right handed students in school</u></em>
Total number of students = 32
number of left handed students + number of right handed students = 32
1x + 7x = 32
8x = 32
x = 4
number of right handed students = 7x = 7(4) = 28
There there are 28 right handed students in class
