<span>When we remove those parentheses, the sign of every term
within the parentheses changes.</span>
Problem 2. Remove the parentheses.
a) p + (q −r + s) <span>= p + q − r + s</span>
b) p − (q −r + s) <span>= p − q + r − s</span>
In each of the following problems, remove the parentheses, then simplify
by adding the numbers.
For example,
<span><span><span>(x − 3) − (y − 4)</span> = <span>x − 3 − y + 4</span></span> <span> = <span>x − y + 1.</span></span></span>
The sign preceding (x − 3) is understood to be + . Therefore the signs within those parentheses do not change.
But the sign preceding (y − 4) is minus. Therefore, y changes to −y, and −4 changes to +4.
Finally, it is the style in algebra to to write the literal terms, x − y, to the left of the numerical term.
Answer:
(√2+1 )(√2+3 )
(√2×√2)+(√2×3)+(1×√2)+(1×3)
2+3√2+√2+3 = 5+4√2
=5+4√2
Answer:
-1
Step-by-step explanation:
2/5-4/5-3/5
-2/5-3/5
-5/5
-1
Hello!
To calculate percent, it is number of positive cases / number of total cases. So first, we want to find the <u>number of positive cases.</u> You're looking for platinum and silver bands, so just add together the number of platinum and silver bands sold.
Platinum bands: 900
Silver bands: 900
Number of positive cases: 900 + 900 = 1,800
Now, look for the <u>number of total cases.</u> Here, just add together all the band types to get the number of rings bought in total.
Platinum: 900
Silver: 900
Gold: 700
Total number of cases: 900 + 900 + 700 = 2,500
Now, use the equation, and divide the two.
1,800 / 2,500 = .72 = 72%
Therefore, your answer is 72% of the rings sold had a platinum or silver band.
Hope this helps!
Answer: 13kg potatoes=9.36 2.5 of carrots=155p
Step-by-step explanation:
potatoes 5kg=3.6 carrots .5kg=31p
value of each kg of potatoes is...
so
value of each kg of carrots is...
31x2=62
so (I assumed when you typed 21/2 it meant 2 1/2 or 2.5)
2.5x62=155