All categories

2 years ago

Solve for z. 7z+ 4 – 9z = 8 z = [?]

Mathematics

2 answers:

jolli1 [7]2 years ago

8 0

Answer:

z = -2

Step-by-step explanation:

7z + 4 - 9z = 8 (The first step is to combine like terms, so 7z -9z = -2z)

-2z + 4 = 8 (Subtract 4 on each side)

-2z = 4 (Divide each side by -2)

z = -2

You can plug -2 back in to check, and you get:

7(-2) + 4 -9(-2) = 8

-14 + 4 + 18 = 8

8 = 8

Hopefully, this helped. Good luck!

finlep [7]2 years ago

3 0

Answer:

z=-2

Step-by-step explanation:

7z+4-9z=8

7z-9z=8-4

-2z=4 divide by-2

z=-2

You might be interested in

Find the equation of the line that

olganol [36]

Answer:

y= $\frac{1}{2}x-2$

Step-by-step explanation:

Perpendicular lines have negative reciprocal gradients(slopes) so the slope of your new line would be 1/2. Then you use the point to find the new y-intercept

y=mx+b

2= $\frac{1}{2}$ (8)+b

2=4+b

B=-2

y= $\frac{1}{2}x-2$

5 0

2 years ago

Solve for x: 3x − 2 > 5x + 10. (5 points)<br> 1) x > 6<br><br> 2) x −6

san4es73 [151]

Answer:

$x$

Step-by-step explanation:

$3x-2>5x+10$

Add 2 to both sides

$3x-2+2>5x+10+2$

Simplify

$3x>5x+12$

Subtract $5x$ from both sides

$3x-5x>5x+12-5x$

Simplify

$-2x>12$

Multiply both sides by $-1$ (reverse the inequality)

$(-2x)(-1)$

Simplify

$2x$

Divide both sides by $2$

$\frac{2x}{2}$

Divide the numbers: $\frac{2}{2} =1$

$=x$

Divide the numbers: $\frac{-12}{2}$

Apply fraction rule: $\frac{-a}{b} =-\frac{a}{b}$

$=\frac{12}{2}$

Divide the numbers: $\frac{12}{2} =6$

$=-6$

$x$

7 0

2 years ago

Read 2 more answers

SOMEBODY PLEASE HELP MEEEEEE ILL MARK BRAINLIESTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Kaylis [27]

Answer:

its A. moderate and positive

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Following the order of operations, exponents should be simplified after completing all multiplication and division.

xenn [34]

False

Exponents should not be simplified.

6 0

3 years ago

Danny wants to sell his house. He would like to receive $136,000 after deducting the 6% commission due to the real estate agent.

Alex17521 [72]

Answer:

The selling price of the house is $144,681

Step-by-step explanation:

The computation of the selling price of the house is shown below:

Let us assume the selling price be x

So, the commission would be 0.06x

Now the danny would received

= x - 0.06x

= 0.94x

And, the amount received is $136,000

So equate this value

Like this

0.94x = $136,000

x = $\frac{\$134,000}{0.94}$

= $144,681

Hence, the selling price of the house is $144,681

5 0

3 years ago

Solve for z. 7z+ 4 – 9z = 8 z = [?]​

Solve for z. 7z+ 4 – 9z = 8 z = [?]