Answer:
Oxygen; 34.01°C
Step-by-step explanation:
The oxygen freezes first as it has a higher (warmer) freezing point. For both to freeze, the temperature must drop a further 34.01°C as:
-218.79 - (-252.8)
= 252.8 - 218.79
= 34.01
The number of square feet of carpet you need to buy is; 203 ft²
Total Cost of Carpet = $281.51
<h3>How to solve algebra word problems?</h3>
We are given;
Measurement dimensions = 11.75 ft by 17.25 ft
A) The number of square feet would be needed is the area of the carpet. Thus;
Number of Square foot = 11.75 * 17.25
Number of Square foot = 202.6875 ft² ≈ 203 ft²
b) From conversions, we know that;
1 sq. feet = 1/9 sq. yards
Thus;
203 sq.ft = 203 * 1/9 sq.yards = 22.56 sq. yards
Now, the cost of carpet is $11.49/sq yd and the sales tax is
do 8.6%. Thus;
Total Cost of Carpet = (11.49 * 22.56) + 8.6%(11.49 * 22.56)
Total Cost of Carpet = $281.51
Read more about Algebra Word Problems at; brainly.com/question/13818690
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Answer:
9 and 14
Step-by-step explanation:
We know that the perimeter is equal to:
P = 2l + 2w = 46
If we divide by 2, we are left with:
l + w = 23
I = 23 - w
Now the area is equal to:
A = l * w = 126
l * w = 126
Now replacing it, we are left with:
(23 - w) * (w) = 126
(-w ^ 2) + 23 * w = 126
Rearranging:
w ^ 2 + -23 * w + 126 = 0
We factor and we have:
(w - 9) * (w - 14) = 0
w - 9 = 0 => w = 9
w - 14 = 0 => 2 = 14
If w = 9, l = 23 - 9 = 14
If w = 14, l = 23-14 = 9
So the dimensions are 9 and 14.
90, 75% is also .75 and .75*120 is 90
2ab - 3a = a.(2b-3)
now the same thing
let's say n=1
a.(2b-3) + n.(2b-3) = (2b-3).(a+n)
Understood?