Answer:
x = 14
2x = 28
6x = 84
Step-by-step explanation:
6x = 180 - 124 + 2x
4x = 56
x = 14
Answer: 5 and 4
Step-by-step explanation:
Perimeter = 2 ( L + W)
18 = 2(L + W) divide through by 2
9 = L + W
9 - L = W
Area = L * W
20 = L (9 - L)
20 = 9L - L^2
L^2 - 9L + 20 = 0 factor
(L - 5) (L - 4) = 0
Set both factors to 0 and solve for L
L = 5 and L = 4
If Amelia starts with 6 feet of wire, the amount of necklaces that she can make is 18.
<h3>What is the
necklaces about?</h3>
Jewelry wire is known to be a kind of a wire that can be either a copper, brass, or others that are often used in jewelry making.
Note that Wire is seen today as a single unit, and it is also seen to be cylindrical, elongated part of drawn metal.
Using the table:
6 ÷ 1/3
= 6 x 3
= 18
Therefore, If Amelia starts with 6 feet of wire, the amount of necklaces that she can make is 18.
Therefore, option A is correct.
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Answer:
I should use at least 304 students
Step-by-step explanation:
Margin error (E) = t × sd/√n
E = 40
sd = 300
confidence level (C) = 98% = 0.98
significance level = 1 - C = 1 - 0.98 = 0.02 = 2%
t-value corresponding to 2% significance level and infinity degree of freedom is 2.326
n = (t×sd/E)^2 = (2.326×300/40)^2 = 17.445^2 = 304 (to the nearest integer)