Answer:
15
Step-by-step explanation:
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Jessica runs fastest because her time/second is about 10 seconds while brookes is around 12.
Answer:
We have that y = 21 when x = 11.
Step-by-step explanation:
We solve this question by proportions, using a rule of three.
Since they vary inversely, we apply the inverse rule of three, that is, with lateral multiplication instead of diagonal.
33 - 7
y - 11
So
11y = 33 -7
y - 11
Dividing both sides by 11
Y = 3 * 7 = 21
We have that y = 21 when x = 11.
Answer:
(a) $248.285
(b) $249.441
(c) I will prefer to buy the television from online store.
Step-by-step explanation:
The manufacturing price of a television is $170.
(a) The online retailer charges a standard makeup of 27% and an additional 15% charge for shipping and tax.
Therefore the final price will be $
= $(170 × 1.27 × 1.15)
= $248.285
(b) Now, the superstore has makeup of 34% and then 9.5% charges for state tax.
So, the final price becomes $
= $(170 × 1.34 × 1.095)
= $249.441
(c) So, I will prefer to buy the television from the online store because the final price is less and also the shipping charges are included in the final price. (Answer)
Answer:
7 minutes
Step-by-step explanation:
okay so lets make blocks = x and neighborhood = y
2x + y =10
2x + 4y = 31
multiply the top equation by -1 so we can single out y
-2x - y = -10
2x + 4y = 31
combine the two equations
3y = 21
since the x's have canceled each other out, just divide both sides by 3 to get a single y
y = 7