Substitution

Question 1

Substitution:

If U=0, A=2, T=5

Answer this question V=U+AT

Answer 1

V=U+AT
First u substitute the numbers into the letters:
(if letters are next to each other you times them together)
V=0+25
25=10
V=0+10 = 10
V=10

Question 2

Substitution:

If U=14, A=-2, T=5

Answer this question V=U+AT

Answer 2

V=U+AT

First u substitute the numbers into the letters:
(if letters are next to each other you times them together)
V=14+-25
-25=-10
V=14+-10 = 4
V=4

Question 3

Substitution:

If U=14, V=6, T=5

Answer this question S=(UTV)T divided by 2

Answer 3

S=(UTV)T divided by 2
S=(14+6)*5/2
14+6=20
20*5=100/2=50
S=50

Question 4

Substitution:

If Y=3, Z=7

8Y-4Z

Answer 4

8Y-4Z
8*3=24
4*7=28
24-28=-4
=-4

Question 5

Find the value of 5c + 2, if c = 6.

Answer 5

5*6=30
30+2=32
=32

Question 6

If x = 6 and y = −2, find the value of:

a. x²
b. 5x + y
c. x + y²

Answer 6

A. 6²= 6*6=36

B. 5*6+-2=30+-2=28

C. 6+-2²=6+4=10

Question 7

You are given that:
m = 0.5, p = 0.75 and c = 2.2

A. 3c+m

B. m+p+c

Answer 7

A. 3*2.2= 6.6+0.5=7.1

b. 0.5+0.75+2.2=3.45

Question 8

Find the value of 5(a + c) when a = 4 and c = 9.

Answer 8

5(4+9)=4+9=13*5=65

Question 9

Work out the value of y:
y = w − 2a²
w = 400
a = 5

Answer 9

y=400-25²
5²=25
225=50
400-50=350

Question 10

What is substitution?

Answer 10

Substitution means putting numbers in place of letters to calculate the value of an expression .