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stepladder [879]

2 years ago

15

X^2 +18 =15 could anyone help me with this?

2 answers:

stiv31 [10]2 years ago

8 0

Answer:

x = i√3, -i√3

Step-by-step explanation:

Simply take the root of both sides, then solve.

Bess [88]2 years ago

3 0

Answer: x = $\sqrt{-3}$ or x = 3i

Step-by-step explanation:

So first you subtract 18 from both sides to cancel out the 18 on the left side.

x^2 = -3

Then you take the square root of both sides in order to get x alone. Then you get an answer of x = $\sqrt{-3}$ which is an imaginary number and can be written as x = 3i.

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?/0.6=1.4<br>how to show the solution

den301095 [7]

To find the solution to this problem, you would do the opposite of division which is multiplication.

Use the terms you have to plug into your new equation;

0.6 x 1.4 = .84

To check your work you would plug in .84 where the '?' is;

.84/.6= 1.4

There you have the original equation you began with.

Therefore, .84 would be your final answer.

8 0

2 years ago

Solve -14-5y >-64<br> A. Y<10<br> B.y>-10<br> C. Y>10<br> D.y<-10

amm1812

Hello :D

Answer:

A. $Y$

Step-by-step explanation:

First, you add by 14 both sides of an equation.

-14-5y+14>-64+14

Then, simplify by equation.

-64+14=-50

-5y>-50

Multiply -1 both sides.

(-5y)(-1)<(-50)(-1)

5y<50

Divide by 5 both sides of an equation.

5y/5<50/5

Divide numbers from left to right.

50/5=10

y<10 is the correct answer.

Hope this helps you! :D

6 0

2 years ago

See attached picture, is there a way to enter equations or algebraic symbols?

coldgirl [10]

SOLUTIONS

Solve a given equations or algebraic symbols?

$\begin{gathered} f(x)=x^2+2x \\ g(x)=1-x^2 \end{gathered}$

(A)

$\begin{gathered} (f+g)(x)=(x^2+2x)+(1-x^2) \\ collect\text{ like terms} \\ x^2-x^2+2x+1 \\ (f+g)(x^)=2x+1 \end{gathered}$

(B)

$\begin{gathered} (f-g)(x)=(x^2+2x)-(1-x^2) \\ =x^2+2x-1+x^2 \\ =x^2+x^2+2x-1 \\ (f-g)(x)=2x^2+2x-1 \end{gathered}$

(C)

$\begin{gathered} fg(x)=(x^2+2x)(1-x^2) \\ =x^2-x^4+2x-2x^3 \\ fg(x)=-x^4-2x^3+x^2+2x \end{gathered}$

(D)

$\begin{gathered} \frac{f}{g}(x)=(x^2+2x)\div(1-x^2) \\ =\frac{x^2+2x}{1-x^2} \end{gathered}$

5 0

1 year ago

If the measure of angle 4 is 43 degrees, then the measure of angle 6 is -------

marta [7]

Answer:

degrees and the measure of angle 5 is -------- degrees. The measure of angl

Step-by-step explanation:

3 0

3 years ago

The weight of a value indicates its

jarptica [38.1K]

Answer:

mean

Step-by-step explanation:

5 0

2 years ago