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3 years ago

What values of x is x2+2x=24 true

Mathematics

2 answers:

agasfer [191]3 years ago

4 0

The answer is x= 4 and x= -6

fomenos3 years ago

4 0

Answer: x = 4

Step-by-step explanation:

x² + 2x = 24.

x² + 2x - 24= 0

Solving this quadratic equation to find the root we will find the value of x.

x² + 2x - 24 =0

x² - 4x + 6x - 24 =0

Factorize.

x( x - 4) + 6( x - 4)

x + 6 = 0 or x - 4 = 0

x = - 6 or x = 4. Now we can check the values by substituting the value of x in the equation, we start with the positive value. x = 4

x² + 2x = 24 sub.

4² + 2(4) = 24

16 + 8 = 24

24 = 24

Now we can say when x = 4, the equation is true.

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Based on the Census, state A has 17 fewer electoral votes for president then state B. If the total number of electoral votes for

makkiz [27]

X = B.......x - 17 = A

x + x - 17 = 87
2x - 17 = 87
2x = 87 + 17
2x = 104
x = 104/2
x = 52........so state B has 52 electoral votes

x - 17 = A
52 - 17 = A
35 = A.....so state A has 35 electoral votes

6 0

3 years ago

Pleaseee help, Solve for x and y :3

irina1246 [14]

Answer:

x = $\sqrt{6}$ , y = 2 $\sqrt{3}$

Step-by-step explanation:

using the tangent ratio and the exact value tan45° = 1 , then

tan45° = $\frac{opposite}{adjacent}$ = $\frac{x}{\sqrt{6} }$ = 1 , then

x = $\sqrt{6}$

----------------------------------

using the cosine ratio in the right triangle and the exact value

cos45° = $\frac{1}{\sqrt{2} }$ , then

cos45° = $\frac{adjacent}{hypotenuse}$ = $\frac{\sqrt{6} }{y}$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

y = $\sqrt{6}$ × $\sqrt{2}$ = $\sqrt{12}$ = 2 $\sqrt{3}$

6 0

2 years ago

What is f(3)??????????

AURORKA [14]

<h3><u>Explanation</u></h3>

Meaning of f(a)

f(a) means the value of f(x) is ... when x = a. That means if we substitute x = 3, we would get f(3).

f(3) also means the value of f(x) is ... when x = 3.

f(x) can also be defined as y // f(x) = y

Find f(3) by graph.

You can find the value of f(x) at specific domain from the graph by looking at x = 3 then look up to where the point or where the graph passes. From the graph, when x = 3 as we look up and the graph passes y-coordinate at 1.

Therefore we can say that when x = 3, y = 1.

<h3><u>Answer</u></h3>

f(3) = 1

8 0

2 years ago

SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!

Sloan [31]

ANSWER

$P-G = 11{w}^{4} - 5 {w}^{2} {z}^{2} - 4z^{4}$