Answer:
The answer to this question is: B [-2√5]
Step-by-step explanation:
First, Find both numbers that can accommodate with each of the radicals.
√20
10 and 2
5 and 2 and 2
√80
10 and 8
5 and 2 and 4 and 2
5 and 2 and 2 and 2 and 2
After this is what they'll look like.
√5,2,2 - √5,2,2,2,2
Group numbers of pairs
√5,<u>2,2 </u>- √5,<u>2,2</u>,<u>2,2</u>
<u>For every pair, bring out the #'s, but only one survives, and comes out.</u>
2√5 - 4√5
= -2√5
This is your answer! Hope this helped!
Answer:
4.5 cups of sugar
Step-by-step explanation:
This is how i solved it...
3 cups sugar = 48 pc. taffy
??? cups sugar = 72 pc. taffy
48 x 1.5 = 72
that means 3 x 1.5 should get you how many cups!
3 x 1.5 = 4.5
4.5 cups of sugar! hope this helps!!!
One way to do it is to use estimation. If we say 47 is near to 50 and 3381 is near to 3000 or 4000, we can see what magnitude the answer will be, so let’s take 50 and 3000 to start with. We can drop the last zero of each of these so we get 300÷5=60 so we only have tens and ones. Now let’s see what 50 and 4000 would give us: 80. Once again we only have tens and ones. So that tells us if we divide 3381 by 47 the number will consist of some tens and some ones. The tens digit in 3381 is 8, so we know that the first digit of the quotient must be over the 8. The time you spent reading the explanation I’ve given is longer than the time it would take you do this in your head! If you practice doing estimations like this regularly, you will probably make fewer mistakes. It only takes a few seconds once you get used to the method. Good luck!
Answer:
Shirt: $45 , Tie: $12
Step-by-step explanation:
Let s be the price of the shirt
Let t be the price of the tie
Given the information from the question,
s + t = 57 - Equation 1
s - t = 33 - Equation 2
We will use substitution method to find the prices.
We will rearranging equation 1.
s = 57 - t
We will substitute s into equation 2.
57 - t - t = 33
57 - 2t = 33
-2t = 33 - 57
-2t = -24
t = -24 / -2
= 12
We now substitute t into Equation 1.
s + 12 = 57
s = 57 - 12
= 45
From here we know, the shirt costs $45 and the tie costs $12
Answer: he drove 221 miles
Step-by-step explanation:
You subtract the initial fee from the total cost (175.11-15.99=159.12) the you divide that by the cost of every mile and it gives you the amount of miles.