Answer:
18
Step-by-step explanation:
-3(2x-3)
-3x(-6)
-3x-6=18 because the negatives cancel each other out.
Answer:
I thought that- 1 X one with 2
It is given in the question that
Anna buys 12 pens and 20 pencils for a total cost of $16. One pen costs $0.40 more than a pencil.
Let the cost of pencil is $ x .
Therefore cost of pen is
![$(x+0.40)](https://tex.z-dn.net/?f=%24%28x%2B0.40%29)
According to the question
![12(x+0.40)+20x =16](https://tex.z-dn.net/?f=12%28x%2B0.40%29%2B20x%20%3D16)
Distributing 12 and combining like terms, we will get
![12x+4.8+20x=16\\32x = 11.2\\x = 0.35](https://tex.z-dn.net/?f=12x%2B4.8%2B20x%3D16%3C%2Fp%3E%3Cp%3E%5C%5C%3C%2Fp%3E%3Cp%3E32x%20%3D%2011.2%3C%2Fp%3E%3Cp%3E%5C%5C%3C%2Fp%3E%3Cp%3Ex%20%3D%200.35)
Therefore cost of pencil is $0.35 and cost of pen is
![0.35+0.40=0.75](https://tex.z-dn.net/?f=0.35%2B0.40%3D0.75)
Answer: B
<u>Step-by-step explanation:</u>
₁₂C₇ is read as "12 choose 7" which means you are choosing 7 out of 12. Since it is a combination and not a permutation, order does not matter.
Answer:
5.3
Step-by-step explanation:
1.8x = 9.4
x = 5.3