If Ziggy’s Taco Shop delivers dinners with a mean time of 21 minutes and a standard deviation of 4 minutes and Sheila’s Burrito Emporium delivers dinners with a mean time of 19 minutes and a standard deviation of 6 minutes, which place would be better to order from to receive your dinner at most 15 minutes from the time you place it? Show all relevant work and explain what your answer means.

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

10000

step-by-step explanation: divide by 2,

area of rectangle a is 2 times that of rectangle b that means 2x+x =   36cm^2

3x = 36cm ^2

x = 36/3

x= 12cm^2

and 2x = 24cm^2

now side of square = are divided by sides = 36/4 = 6cm

that means length of rectangle a and b is 6cm too

now for rectangle a,

l*b = area

= 6*y=24

y=24/6 = 4

therefore dimensions of rectangle a are- length = 6cm, breadth = 4cm

and for rectangle b, length = 6cm and breadth = 6-4 = 2cm.

hope this .

43

step-by-step explanation:

not sure if this is supposed to be a trick question. 43 is the only one that makes any sense.