First off, the underline underneath means plus or minus, since when you take the square root of something, the answer can be negative or positive at the same time
1. 64 is a perfect square. 8 x 8 = 64, therefore it is +- (plus or minus) 8.
2. 45 is not a perfect square, so you can pull out numbers or plug into a calculator and estimate.
Both answers: Since 45 is divisible by 9 and five, you can break a nine into two threes, therefore pull it out, and since the answer is negative, you get:
-3(5)^0.5 (an exponent of one-half or 0.5 means square root)
If you solve by calculator, the answer is ~= (approximately equal to) -6.72
3. Since 90 is not a perfect square, repeat the previous question. 9 can go into 90, therefore you can pull out two threes and are left with: +-3(10)^0.5
Using the calculator, you get ~= +-9.49
P = 3(m - 5)
p is the number of quarters that paulo has
m is the number of quarters that marie has
I believe the answer is 1. One is the only number that can go into both 8 and 9.
Answer:
Zac Made 28 Jackets
Step-by-step explanation:
The way I solved it is by first dividing 48 by 2.
After that I subtracted 8 from Tyra's jackets and then guessed and checked.
I eventually got to the point where i found that Tyra made 20 jackets and Zac made 28 making up to 48 jackets in total.
Answer: 4
Step-by-step exzplanation: 20/360= X/72
360X= 1440
Divide by 360
X=4
