Solve: 5/2x - 1/3= -1/2A. x=-5/12B. x= -25/12C. x= -1/15D. x= 1/3

Mathematics

2 answers:

devlian [24]2 years ago

7 0

Answer:

c. x = -1/15

Step-by-step explanation:

5/2x - 1/3 = -1/2 [multiply the whole equation by 6 (lowest common denom)

15x - 2 = -3 [add 2 on both sides of equation

15x = -1 [divide both sides by 15 to isolate x]

x = -1/15

pickupchik [31]2 years ago

5 0

Answer is c. Change the denominator of 1/3 and 1/2 to 6 so you have 3/6 for 1/2 and 2/6 for 1/3. then add 2/6 to both sides to get -1/6 then isolate x.

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In 2003 there were 1078 JC Penney stores and in 2007 there were 1067 stores.

Tamiku [17]

Answer:

a) $f(s)=\frac{-11}{3}s+\frac{3245}{3}$ $f(1)=1078 stores$ b) 2012, 1049 stores. 2014, 1041 stores. c) Yes it is a downsizing company.

Step-by-step explanation:

s=year | f(s) = number of stores per year

1 | 1078

4| 1067

$m=\frac{1067-1078}{4-1}\Rightarrow m=\frac{-11}{3}\\1078=-\frac{11}{3}*1+b\Rightarrow b=\frac{3245}{3}\\f(s)=\frac{-11}{3}s+\frac{3245}{3}$

s=1 in 2003

$s=1 year =2003\\ Testing\\f(1)=\frac{-11}{3}(1)+\frac{3245}{3}=\frac{3234}{3}=1078\\ f(1)=1078$

b) For 2012, s=9. For 2014, s=11

$\\f(s)=\frac{-11}{3}s+\frac{3245}{3}\\ \\f(9)=\frac{-11}{3}(9)+\frac{3245}{3}\cong1049\\\\f(11)=\frac{-11}{3}(11)+\frac{3245}{3}\cong=1041$

c) In deed. Since the function shows a decreasing amount of JC Penney stores. Maybe this is a downsizing from this company, progressively closing some stores.

4 0

3 years ago

What is the value of x, if the perimeter of the rectangle is 37?<br><br> This is the problem :

salantis [7]

Answer:

X= 3.7

Step-by-step explanation:

Perimeter of rectangle= 2(L+B)

37= 2(4X+X)

37= 2(5X)

37= 10X

37/10=X