Answer:
7
Step-by-step explanation:
Set up a proportion
12 cookies / 2 cups = 42 cookies / x Notice that cookies are on the top and cups are on the bottom of each proportion.
12/2 = 42/x Cross multiply
12x = 84 Divide by 12
x = 84/12
x = 7
He will need 7 cups to make 42 cookies.
Answer: (55,9) Explanation is below.
Step-by-step explanation:
What you want to do is try to mutliply one of your equations so that either y or x will be canceled out.
Here is the example:
Say you want to get rid of x, you can multiply the first equation: x-5y=10 by -2 to match the second equation: -2x+6y=-16.
Therefore, the first equation would become -2(x-5y=10)=> -2x+10y=-20
Then subtract the first equation from the second:
(-2x+6y= -16)
- (-2x+10y = -20)
-------------------------
=> 0x-4y= -36
Simplify and then you get y=9.
To find x, plug in y into one of the equations: x-5(9)=10 => x-45=10 => x=55
Sorry if I didn't explain it correctly.
Have a nice day! :D
Answer: 9
Step-by-step explanation:
The reason for this is because the top row is 1234 you have to take the 27 and divide it by 3 giving you 9 so that means that the ? equals 9
<span>4% of .65 is .02, so the gum would be a total of $0.67, gas was $26.34, and the windshield wiper fluid is $4.97. Add those all together and you have $31.98, if you give the clerk $20 then you still owe $11.98.</span>
5³ would be the correct answer but 5³ equals 125