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True [87]
3 years ago
14

The first three steps of completing the square to solve the quadratic equation x^2+4x-6=0 are shown below.

Mathematics
1 answer:
ad-work [718]3 years ago
5 0
Take the sqrt of both sides of <span>(x+2)^2=10:

x+2 = plus or minus sqrt(10)

Solve for x:  x = -2 plus or minus sqrt(10)

Evaluate x:  x = -2 + sqrt(10)  AND  x = -2 - sqrt(10)       (answers)

</span>
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Three sailors were marooned on a deserted island that was also inhabited by a band of monkeys. The sailors worked all day to col
noname [10]

Step-by-step explanation:

x-the initial number of coconuts

x=3y+1

2y=3z+1

2z=3×7+1=>z=11=>y=17=>x=52

7 0
3 years ago
Jackson is three times as heavy as Andrew. If the sum of their weight is 360 pounds, find Andrews weight​
Delicious77 [7]
Answer: Andrew = 90 pounds

Explanation:
Assume Andrew weight is X
Since Jackson weight is 3 times Andrew
Then it’s 3x

3x + x = 360
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5 0
3 years ago
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Find the missing side length.
MaRussiya [10]

x = 6

Explanation:

use the pythagorean theorem which is <u>a^2 + b^2 = c^2</u>. 8 goes in either the a or b position and 10 is the longest side so it will go in the c position.

8 0
3 years ago
Solve 4 + 4 ( x - 2 ) = 2 ( x + 1 ) - x<br> The question requires you to show your work
kati45 [8]

Answer:

x = 2

Step-by-step explanation:

Step  1  :

Equation at the end of step  1  :

 (4+(4•(x-2)))-(2•(x+1)-x)  = 0

Step  2  :

Equation at the end of step  2  :

 (4 +  4 • (x - 2)) -  (x + 2)  = 0

Step  3  :

Step  4  :

Pulling out like terms :

4.1     Pull out like factors :

  3x - 6  =   3 • (x - 2)

Equation at the end of step  4  :

 3 • (x - 2)  = 0

Step  5  :

Equations which are never true :

5.1      Solve :    3   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

5.2      Solve  :    x-2 = 0

Add  2  to both sides of the equation :

                     x = 2

One solution was found :

                  x = 2

Processing ends successfully

plz mark me as brainliest :)

7 0
3 years ago
On the graph shown, what is f(-1)?
Naddik [55]

Answer:

where is the graph?

Step-by-step explanation:

7 0
3 years ago
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