Product of 8 and the sum of 4 and a number:
sum of 4 and a number: (4 + n)
Product of 8
8 x (4 + n) is 112
8 x (4 + n) = 112
Distribute
32 + 8n = 112
Subtratc
8n = 80
Divide by 8
n = 10
The number is 10, and next time please put options because it says "Which equation could be used to solve for the number?" Thanks! :)
You say to yourself "Self ! This is easy, and I refuse to let it scare me !
I know that 20 dollars minus 2 dollars leaves 18 dollars.
And I know that 20 cows minus 2 cows leaves 18 cows.
And I know that 20 puppies minus 2 puppies leaves 18 puppies.
So it's obvious to me that 20 of anything minus 2 of the same thing
is always 18 of them.
It doesn't matter whether the things are hairbows, goldfish, cars,
CDs, books, or 'x', 'y', or 'z'.
So 20m minus 2m is definitely 18m."
Answer:
D. Only one cleaning product was asked about in the survey.
Any given company can use more than one cleaning product or even use a combination of different cleaning products. The question was not specific enough, since it should have probably asked which cleaning products are used and which ones are used more frequently.
Step-by-step explanation:
the other options are wrong because:
- A. Only 50 cleaning services were surveyed. ⇒ This actually would increase the validity of the claim because it satisfies the the condition for a valid confidence interval [np and n(1 - p) are larger than 10]-
- B. Cleaning services were selected at random. ⇒ This actually would increase the validity of the claim.
- C. A well-known company conducted the survey. ⇒ This actually would increase the validity of the claim.
Answer:
75
Step-by-step explanation:
40 percent (calculated percentage %) of what number equals 30? Answer: 75.
