7x = 12
Divide each side by 7:
x = 12/7 = 1.71 (rounded)
Wiki User
∙ 13y ago-0.15
Estimating is just an educated guess. For example, if you have to solve the problem 102.17 plus 266.18, you would make an educated guess. An educated guess would be 100+ 270 which equals 370. When you are rounding, you will usually get instructions to round a certain number. It is knowing the exact value, but finding the nearest whole number. For example: Round to the nearest hundredth 4.6781 If you are rounding to the nearest hundredth, you are trying to round the number 8, since it is in the hundredths spot. To round 8, look at 1. Is it greater than 5? If the number is greater than 5, round the number up by 1. If the number is smaller than 5, the number remains the same.
Round your factors to the nearest 10's, 100's 1000's, etc. Then multiply. You should be able solve the problem more or less in you head. If you need to use a pen and paper, you must round to and even higher place. When rounding, if the place your rounding ends in 1-4, you round down. 5-9= round up. For example: 14 rounded to the nearest 10 =10. 16 rounded to the nearest 10=20. 123 rounded to the nearest 100= 100. 191 rounded to the nearest hundred= 200.
How do you solve 4y plus x equals 8
121 is the answer
-0.15
Estimating is just an educated guess. For example, if you have to solve the problem 102.17 plus 266.18, you would make an educated guess. An educated guess would be 100+ 270 which equals 370. When you are rounding, you will usually get instructions to round a certain number. It is knowing the exact value, but finding the nearest whole number. For example: Round to the nearest hundredth 4.6781 If you are rounding to the nearest hundredth, you are trying to round the number 8, since it is in the hundredths spot. To round 8, look at 1. Is it greater than 5? If the number is greater than 5, round the number up by 1. If the number is smaller than 5, the number remains the same.
Round your factors to the nearest 10's, 100's 1000's, etc. Then multiply. You should be able solve the problem more or less in you head. If you need to use a pen and paper, you must round to and even higher place. When rounding, if the place your rounding ends in 1-4, you round down. 5-9= round up. For example: 14 rounded to the nearest 10 =10. 16 rounded to the nearest 10=20. 123 rounded to the nearest 100= 100. 191 rounded to the nearest hundred= 200.
Using the quadratic equation formula: x = 8.42 or x = -1.42
How do you solve 4y plus x equals 8
121 is the answer
1.000
You can't solve a formula with no equals sign
Not enough information to solve
14
46.7 divided by 3.15 and round to the nearest tenth
Yes, they are a bit different, but not by much. In compatible numbers, you pick numbers that are close to make it easier to solve your problem. Here's an example: Say a Mom or Dad has $187.45 to spend buying Christmas presents for their three kids. They decide that they want to spend about the same amount of money for each kid, but it doesn't have to be exact. You could get a pencil and paper out and divide 187.45 by 3 and get 63.483333333... OR you could just round down 187.45 to 180 and divide it by 3 much easier. (Probably in your head!) The reason 180 and 3 are compatible numbers is because they divide easier since 3 goes into 18 evenly. Rounding is a bit more accurate depending on how close you need to round. 187.45 can be rounded to 187.5 if you are are rounding to the nearest tenth, or 187 if you're rounding to the nearest whole number, or 190 to the nearest tens or 200 for the nearest hundred.