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Tems11 [23]
3 years ago
14

Solve x2 + 12x = –20 by completing the square. Add to both sides of the equation. The value of in this equation is . Write the l

eft side of the equation as a binomial squared. The left side of the equation becomes ()2. Use the square root property of equality. Isolate the variable: x =
Mathematics
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer:

(36) (x+6) (-10 or -2) i got this right on (ed)

Step-by-step explanation:

1 Add  to both sides of the equation. The value of  in this equation is 36.

2 Write the left side of the equation as a binomial squared. The left side of the equation becomes (x +6)2.

3 Use the square root property of equality.

4 Isolate the variable: x = -10 or -2

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Find the area of the following regions, expressing your results in terms of the positive integer n ≥ 2. The region bounded by
cluponka [151]

Answer:

The area of the searched region is A= a+b+ \frac{2n}{n+1}- \frac{n(a^{\frac{n+1}{n} }+b^{\frac{n+1}{n} }) }{n+1}-2

Step-by-step explanation:

If you want to find the area of a region bounded by functions f(x) and G(x) between two limits (a,b), you have to do a double integral. you must first know which of the functions is greater than the other for the entire domain.

In this case, for 0<x<1, f(x)<g(x)

while for 1<x, g(x)<f(x).

Therefore if our domain is all real numbers superior to 0 (where the limit 0<a<1 and 1<b), we have to do 2 integrals:

A=A(a<x<1)+A(1<x<b)

A(a

A(1

A=a-1 +\frac{n}{n+1} - \frac{na^{\frac{n+1}{n} } }{n+1} +  b-1 + \frac{n}{n+1} - \frac{nb^{\frac{n+1}{n} } }{n+1} = a+b+ \frac{2n}{n+1}  - \frac{n(a^{\frac{n+1}{n} }+b^{\frac{n+1}{n} }) }{n+1}   -2

3 0
3 years ago
Can somebody explain to me what algebra is
olga55 [171]
Very confusing math that focuses on graphs, equations, inequalities, quantities. Algebra uses a lot of symbols, multiplication and calculations.

Hopefully this helps!
6 0
3 years ago
I need help does anybody know this answer asap
docker41 [41]
Replace B and small b and A by its values then multiply by 2 on both sides. You will get 42= 7h then h=6
7 0
3 years ago
Read 2 more answers
Hello,I am doing 5th grade homework for my 10 yearold daughter in summer school.I know the answer is 2 1/4 I just want to know h
valentinak56 [21]
15/(6 2/3)

First, change the mixed fraction into improper fraction.

6 2/3 = 20/3

15/(20/3)

Next, flip the second fraction to change the first division into a multiplication.

15 x (3/20)

Multiply 15 and 3 together.

15 x 3 = 45

Divide 45 with 20

45/20 =  2.25

0.25 = 25/100 = 1/4

2 1/4, or 2.25 is your answer

hope this helps
3 0
4 years ago
Read 2 more answers
1/4x + 2/3y = 5 1/2x + 3/2y = 11 which of the following expressions represents the multiplicative property of equality
Mandarinka [93]

B

Because

(1/4x+2/3y=5)12=3x+8y=60

And

(1/2x+3/2y=11)3=x+3y=22


If you need/want more detailed explanations please ask.

5 0
3 years ago
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