Answer:
d. -3a3 – 3a² + a +8
Step-by-step explanation:
Simplify the expression.
Answer:31/40
Step-by-step explanation:
To add you have to have a common denominator. To get that you can multiply each fraction by one in different ways. 2/5 *8/8= 16/40 and 3/8* 5/5= 15/40 and then add those two to give you 31/40.
Answer:
Step-by-step explanation:
Answer:
x = 12. 4¯
(the 4 is supposed to be under the line)
The line sgnifies that the number goes on forever, such as
12.444444444444 and so forth
anyways, youre going to use "cross multiply and divide" which means you multipy the two number on one side top, and the other bottom. Make sure its the one that does have the x!
I multipled 7 * 8 which equals 56, and the leftover number, which is 4.5 is what i divide. When we divide that we get our answer, which is x.
Hope this helped!!
Step-by-step explanation:
Equivalent fractions can be found by multiplying numerator and denominator by the same number.
for example : 2/5 * 3/3 = 6/15......2/5 and 6/15 are equivalent. Just like 2/5 * 4/4 = 8/20......2/5 and 8/20 are equivalent...so basically, if u multiply the numerator by a certain number, and the denominator by that same number, u will get an equivalent fraction.
Now to ur problem...
x 54
------ = -----
7 42
now look at ur denominators....7 x what = 42 ? 7 x 6 = 42...so u have multiplied the denominator by 6....so u would have to multiply the numerator by 6.....or divide by 6....54/6 = 9.....or 9 x 6 = 54. So that missing value is 9.
9/7 = 54/42
check..
9/7 * 6/6 = 54/42 (equivalent)
