Conrad has a collection of three types of coins: nickels,dimes,and quarters.There are five more nickels than quarters but four times as many dimes as quarters.If the entire collection is worth $5.85,how many nickels,dimes,and quarters are there?
Answers
n=number of nickles d=number of dimes q=number of quarters use cents for everything
total value=585 5n+10d+25q=585 divide everybody by 5 to simplify n+2d+5q=117
we have
nicles are 5 more than quarters n=5+q
4 times as many dimes as quarters d=4 times q d=4q
sub those in 5+q+2(4q)+5q=117 5+6q+8q=117 5+14q=117 minus 5 14q=112 q=8
sub back n=5+q n=5+8 n=13
d=4q d=4(8) d=32
13 nickles 32 dimes 8 quarters divide both sides by 22
What is the relationship between the 6s in the number 7,664?
Answers
if 7664 is divided by 6, 7664 / 6 1277. 33
1277.33 time of 6 is equal to 7664
to make a fruit salad Marvin mixes 1 3/4 cups of diced peaches with 2 1/4 cups of diced pears how many cups of peaches and pears are in a fruit salad
Answers
4 cups....
First, change the proper fractions to improper fractions.
2 1/4 = 9/4
1 3/4 = 7/4
Then, add the improper fractions.
9 7 16 --- + ---- = --------- = 4 4 4 4
4 cups of peaches and pears
What two numbers multiply to 210 and add to -29
Answers
factor 210 and add them factors remember that both have to be negative
Decrease 42 by 15%. it's for maths and it's decreasing percenages
Answers
OK so 1st you need to do 42 times .15 = 6.3 then you need to subtract that number from 42 which is 35.7 so that is your answer! I hope it helps :)
Ramona creates 16 paintings each month. About how many paintings will she create in 3 years?
Answers
she will have 576 paintings in 3 years
U know that there is 12 months in a year and she creates 16 each month so 12x16=192 and then u want to multiply 192 by 3 because 192 is the amount she makes in a year