Answer:
£ 170 .
Step by step explanation :
Given that the price of a computer was decreased by 20% to £136. And we need to find the Original price before the decrease. So , let the earlier price be x ,
<u>Decrease in 20 % :- </u>
⇒ Decreased price = 20% of x
⇒ Decreased price = 20/100 × x
⇒ Decreased price = x/5
<u>New price :- </u>
⇒ New price = x - x/5
⇒ New price = 5x - x/5
⇒ New price = 4x/5.
But its given £ 136 , So
⇒ 4x/5 = £ 136
⇒ x = £ 136 * 5/4
⇒ x = £ 170
<h3>
<u>Hence</u><u> </u><u>the</u><u> Original</u><u> price</u><u> </u><u>was</u><u> </u><u>£</u><u> </u><u>1</u><u>7</u><u>0</u><u> </u><u>.</u></h3>
Answer:
The expression that represents the given sequence is 5+6(n-1). Option C (not labeled).
Explanation:
<u>Arithmetic Sequences</u>
In an arithmetic sequence, each term can be obtained by adding or subtracting a fixed number to the previous term. That fixed number is called the common difference.
We are given the following sequence:
5, 11, 17, 23, 29, ...
Each term is located in a position starting from n=1. Let's test each option:
A For n=1 we should have the first term (5). Substituting n=1 into the general equation: 5+6(n+1) = 5+6(1+1) = 5+12 = 17. Since the resulting term is not 5, this option is incorrect.
B For n=1, 6+5(n+1)= 6+5(2)=16. This option is incorrect.
C (not labeled) For n=1, 5+6(n-1)=5+6(1-1)=5+0=5. The first term is correct. Let's test for the second term (n=2):
5+6(2-1)=5+6=11. Correct. For n=3
5+6(3-1)=5+12=17. Correct.
We can see the terms are increasing by 6, and the given sequence is also increasing by 6. Thus, This option is correct.
D For n=1, 6+5 (n-1)=6+0=6. This option is incorrect.
Answer:
14 dollars
Step-by-step explanation:
42 / 3 = x amount of dollars
14 = x
so every one sweater costs 14 dollars
7 + (4^2 + 5) x 2 = 51
(2 + 3) x 3^2 + 39 / 3 = 54
2 x [(4 + 3) x 5 - 6] = 58
[84 / (3 + 4)] x 3 + 1 = 37
Therefore none of them equal 52!
Multiply both sides of the equation by