Answer:
When rounding a number in the hundreds place you must look at the digit in the 10's place. if it is 5 or greater than the hundred is going to be rounded up. So 871 rounds to 900 because 70 is greater then 50.
Ninety-three percent of a town’s population own cars. If the number of cars owned is 5,208, what is the population of the town, if nobody owns more than 1 car?PLEASE HELP, I DON'T GET THIS!! :((
Answers
Hey there :)
93% of a town's population own cars If number of cars owned is 5,208
Population of town is? Let p represent population of town
of p = 5208 × p = 5208
Divide 5208 by p in order to do cross multiplication ( easier way )
Cross multiply:
93p = 5208 × 100 93p = 520800
Divide by 93 in order to find value of p
p = 5600
The total population of the town is 5600
What the problem is saying is that 93% of the town's population is 5,208. If no one owns more than one car, then each car in the town accounts for one person. So, therefore, 93% of the town = 5,208.
The total population of the town can be found by setting up a proportion.
Cross-multiply:
Solve for x, the town's population:
There are 5,600 people in the town.
When solving the equation x2-8x-7=0 by completing the square
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x = 4.8 + 4 or -4.8 + 4 x = 8.8 or -0.8
kenny has 9 more comic books than bobbie. together they have 95 comic books. define a variable. then write an equation that could be used to find the number of comic books they each have.
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Number of comic books Bobbie has - b
95 = (9 + b) + b
Since 95 is the total number of comic books both boys have, it is equal to both boys' books added together. However, since we don't know how many books Kenny has, and only that he has 9 more than Bobbie, we can define that as (9 + b), or nine more than b. Then, we add b again, because (9 + b) is the number of books Kenny has, and if we add that to the number of books Bobbie has, it will equal the total of 95 comic books.
I stuck with this one. Simplify expression 3ab² −5a²b+ (−3a²b)−4ab²
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the answer is -ab^2-8a^2b
simply with same variable and exponents so the answer is -ab²-8a²b so your combining like terms