All categories

3 years ago

15 - 4j = 43 Help me

Mathematics

2 answers:

musickatia [10]3 years ago

5 0

Answer:

I did not understand your question so this is what I know. If it is correct pls mark me brainliest.

Step-by-step explanation:

15 + -4j = 0

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Add '-15' to each side of the equation.

15 + -15 + -4j = 0 + -15

Combine like terms: 15 + -15 = 0

0 + -4j = 0 + -15

-4j = 0 + -15

Combine like terms: 0 + -15 = -15

-4j = -15

Divide each side by '-4'.

j = 3.75

Simplifying

j = 3.75

Lelu [443]3 years ago

4 0

Answer:

15 + -4j = 43

Solving

15 + -4j = 43

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Add '-15' to each side of the equation.

15 + -15 + -4j = 43 + -15

Combine like terms: 15 + -15 = 0

0 + -4j = 43 + -15

-4j = 43 + -15

Combine like terms: 43 + -15 = 28

-4j = 28

Divide each side by '-4'.

j = -7

Simplifying

j = -7

Step-by-step explanation:

You might be interested in

Find dy/dx. if y = 8u - 6 and u = 3x - 8.

Dmitriy789 [7]

Use the chain rule:

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm du}\dfrac{\mathrm du}{\mathrm dx}$

We have

$y=8u-6\implies\dfrac{\mathrm dy}{\mathrm du}=8$

$u=3x-8\implies\dfrac{\mathrm du}{\mathrm dx}=3$

so we get

$\dfrac{\mathrm dy}{\mathrm dx}=8\cdot3=\boxed{24}$

Alternatively, you can substitute u in the definition of y and differentiate with respect to x :

$y=8u-6=8(3x-8)=24x-64\implies\dfrac{\mathrm dy}{\mathrm dx}=24$

7 0

3 years ago

2. Write and solve an equation to find the value of x. 3.8, 4.2, 5.3, x; mean 4.8

BabaBlast [244]

Answer:

5.9

Step-by-step explanation:

The mean means arithmetic average (some people just say average here).

The average of 4 numbers is the sum of those 4 numbers divided by the number of numbers which is 4 in this case.

So we have this formula:

$\frac{3.8+4.2+5.3+x}{4}=4.8$

Multiply both sides by 4:

$3.8+4.2+5.3+x=4(4.8)$

Simplify:

$13.3+x=19.2$

Subtract 13.3 on both sides:

$x=19.2-13.3$

Simplify:

$x=5.9$

3 0

3 years ago

Which of the following equations describe the line shown below? check all that apply. Please Help!

Varvara68 [4.7K]

Answer:

A & F

Step-by-step explanation:

if you look at the other question I answered for you, you can see the work. but basically you can figure out slope by doing m=y2-y1/x2-x1.

so we now know the slope is 1/4. which eliminates choices B, D, E.

we see that C will not work because the x and y values are switched.

according to point slope formula A & F work.

4 0

3 years ago

What is an equation of the line that passes through the points ( 3 , - 3 ) and ( - 3 - 3 )

Schach [20]

Answer:

y=0/-6x-3 or Undefined

Step-by-step explanation:

Since the slope is only a vertical line, that means the slope is going to be undefined. However, this is what the equation would look like.

Hope this helped!

5 0

3 years ago

Translate this sentence into an equation.

aliya0001 [1]

Answer:

20+h = 46

Step-by-step explanation:

it doesn't ask to solve it so that's the answer

7 0

2 years ago

Read 2 more answers