Find the value of the following expressions.
a. 1a + 1; when a = -2
c. 7-7x; when x=2
e. 2a + b; when a = 1 and b= -3
b. 3x + 1;
d. 11x - 100;
& 3a +46 +56;
when x=-4
when
x = 9
of
Answers
Answered by
7
Answer:
a] 1a + 1
➡️ put value of a = -2
➡️ 1×(-2)+1
➡️ -2+1
➡️ -1
b] 7-7x
➡️ put the value of x = 2
➡️ 7-7×2
➡️ 7-14
➡️ -7
c] 2a + b
➡️ put the value of a = 1 , b = -3
➡️ 2×1+(-3)
➡️ 2 -3
➡️ -1
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Answered by
2
Step-by-step explanation:
a. 1a + 1; when a = -2
= 1×(-2) + 1
= -2 + 1
= -1
c. 7-7x; when x=2
= 7 -7×2
= 7 - 14
=7
e. 2a + b; when a = 1 and b= -3
= 2×1 + (-3)
= 2-3
=-1
b. 3x + 1; when X =4
= 3×4 + 1
= 12 +1
=13
d. 11x - 100; when X=9
= 11 × 9 - 100
= 99 - 100
= -1
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