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crimeas [40]
3 years ago
6

HELPPPPPP PLEASE ...

Mathematics
2 answers:
horsena [70]3 years ago
5 0

Answer:72828

Step-by-step explanation:

Feliz [49]3 years ago
5 0
The answer is the last one!
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X^2+4x+20=12x-5<br><br> Solve this equation
Scrat [10]

Answer:

4 + (or -) 3i

Step-by-step explanation:

Hi!

Alright, so we're going to move all of the variables and constants to one side. Then, using the quadratic formula, we'll find the answer.

1. Move 12x-5 to the left side of the equation by

  a. Subtracting 12x from both sides

  b. adding 5 to both sides.

1: x^2+4x+20-12x+5

2. Group the common terms

  x^2+4x-12x+20+5 --> x^2-8x+25

3. Look at the problem. We can't factor this.

Explanation for why this isn't factorable (you can skip this)

(1) 25 is positive, so its two factors will both be either positive or negative. We're looking for a negative 8, so let's go with negative.

(2) Factors of 25: 1 & 25, 5 &5

Seeing the problem? Ya, none of the factors of 25 sum to eight. So, instead, we're going to use the quadratic formula.

4.  So, the quadratic formula: \frac{-b+-\sqrt{b^2-4ac} }{2a}

Our equation is x^2-8x+25=0

a is the constant in front of the x^2

b is the constant in front of the x

c is the term without any x values

so, a=1, b=-8, and c= 25

Into equation:

\frac{8+-\sqrt{64-4(1)(25)} }{2a}=\frac{8+-\sqrt{64-100} }{2}=\frac{8+-\sqrt{-36} }{2}

8/2 = 4

sqrt(-36) = 6i

6i/2 = 3i (remember, we still have the two in the denominator)

4 + (or -) 3i

8 0
2 years ago
Read 2 more answers
This pattern repeats every 5 terms. The pattern is rectangle, pentagon, triangle, square, square. What is the 11th term of this
skad [1K]

The correct answer would be a <u>square</u>

7 0
2 years ago
Find the sum of the even integers between 21 and 45
Vika [28.1K]
22+24+26+28+30+32+34+36+38+40+42+44= 396
6 0
3 years ago
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A family buys 6 airline tickets online. The family buys travel insurance that costs $18 per ticket. The
Flauer [41]

Answer:

15

Step-by-step explanation:

4 0
2 years ago
Find the length of a diagonal<br> of a square with sides of 14<br> feet long.<br> [?][feet<br> /
inessss [21]

Answer:

14√2 feet

Step-by-step explanation:

The length of a diagonal of a square is L=S\sqrt{2} where S is the side length of the square. Therefore, L=14\sqrt{2}.

4 0
2 years ago
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