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Inessa [10]
3 years ago
11

(2b^2 - 5b) - (7b + 3b^2)

Mathematics
1 answer:
Marta_Voda [28]3 years ago
8 0

Answer:

-13b

Step-by-step explanation:

(2b^2 - 5b) - (7b + 3b^2)

-3b^2 - 10b^2 = -13b

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You want to place a towel bar that is 10 1⁄4 inches long in the center of a door that is 26 1⁄3 inches wide. How far should you
attashe74 [19]
The bar should be 8 1/24 from the each edge of the door.

We need to subtract 10 1/4 from 26 1/3 to get the fraction of the space not covered by the towel bar. 
We also need to divide the difference by 2 because we placed the towel bar in the center of the door.

1st we need to convert the mixed fractions into fractions to perform subtraction.
26 1/3 = ((26*3)+1)/3 = 79/3
10 1/4 = ((10*4)+1)/4 = 41/4

Steps in Subtracting Fractions
Step 1. Make sure the denominator is the same. 3 and 4 are the denominators, they are not the same but they are factor of 12. So,
79/3 must be multiplied by 4 = 79 * 4 / 3 * 4 = 316 / 12
41/4 must be multiplied by 3 = 41 * 3 / 4 * 3 = 123 / 12

Step 2. Subtract the numerators and place them above the common denominator
316/12 - 123/12 = 316 - 123 / 12 = 193 / 12

Before we can simplify the fraction, we must divide it by two to get the measurement of each edge of the door.

Steps in dividing fractions.
Step 1. Get the reciprocal of the 2nd fraction.
1st fraction : 193 / 12
2nd fraction : 2 /1  ⇒ reciprocal 1/2

Step 2. Multiply the 1st fraction to the reciprocal of the 2nd fraction
193 / 12 * 1/2 = 193 * 1 / 12 * 2 = 193 / 24

Step 3. Simplify the fraction.
193 / 24 = 8 1/24
8 0
3 years ago
(2x^3+10x^2)/(x^2+x-20) divided by (2x^2)/(x-4)
Nutka1998 [239]

Answer:

1

Step-by-step explanation:

Who knew the answer would be 1 LOL

hope this helps :)

8 0
3 years ago
Add (2x + 2) and (4x – 7)
natta225 [31]
The right answer is 6x + 5
4 0
3 years ago
K=d d=5 find k<br><br><br> Determine the value of the indicated variable
svet-max [94.6K]
K=d
d=5

Since K is equal to d, and d is 5, the value of K is 5.

K=5
5(K)=5(d)
4 0
3 years ago
Read 2 more answers
1. What is 13.0978 rounded to the nearest thousandth?
Alexandra [31]

Answer:

13.098

Step-by-step explanation:

7 0
2 years ago
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