Answer:
9+x = 2y+14
Step-by-step explanation:
It says 9 plus a number, so plug in x for 'a number', and it says 'is twice a number plus 14'. Plug in '=' for is another variable for 'a number', and last but not least, just put +14 for plus 14
Answer:
Step-by-step explanation:
{x = 2y - 8
{4x + y = 13
13 = 4[2y - 8] + y
13 = 8y - 32 + y
13 = −32 + 9y
+ 32 + 32
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[Plug this back into both equations above to get the x-coordinate of 2];
I am joyous to assist you anytime.
- 2x - 11 = - 25 :) hope this is ok
Answer:
integer represented as a minus the integer represented as b
Answer:
The constant of proportionality gives you the price per unit at each store.
Step-by-step explanation:
If you assume that the price (y) is directly proportional to the amount (x) you get, the formula is
y = kx
where k is the constant of proportionality.
k = y/x
k has the units of cost per unit, for example, dollars per ounce.
The fewer the dollars per ounce, the better the deal you are getting.
If store A offers apple sauce at $1.29 for 25 oz and Store B offers apple sauce at $2.89 for 50 oz, which is the better deal?
At store A, k = $1.29/25 oz = $0.052/oz or 5.2¢/oz
At store B, k = $2.89/50 oz = $0.058/oz or 5.8¢/oz
The apple sauce is cheaper at Store A.