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3 years ago

Solve for z. 7z +4 – 9z = 8 z = [?]

Mathematics

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

Z = -2

Step-by-step explanation:

Alecsey [184]3 years ago

3 0

Answer:

z = -2 Hope that helps !

Step-by-step explanation:

1. Simplify 7z+4-9= -2z+4=8

2. Subtract 4 from both sides -2z=8-4

3. Simplify 8-4=4 -2z=4

4. Divide both sides by -2 z= -4/2 = -2

so, that your answer z= -2 Make me brainliest

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3 years ago

The width of a rectangle is 5 units less than the length. The area of the rectangle is 6 units. What is the width, in units, of

Readme [11.4K]

Answer:

The width of rectangle is 1 unit.

Step-by-step explanation:

Given:

The area of rectangle is 6 units and its width is 5 units less than the length.

So, to find the width of rectangle.

Let the length be $x$ and the width be $x-5$ .

Now, to find the width we put the formula of area of rectangle:

Area = length × width

$6= x\times (x-5)$

$6=x^{2}-5x$

$0=x^{2}-5x-6$

$0=x^{2}-6x+x-6$

$0=x(x-6)+1(x-6)$

$0=(x-6)(x+1)$

<em>On solving equation we get:</em>

$x-6=0, x+1=0$

Therefore, we take the value x=6 as it is positive value:

$x-6=0$

$x=6$

So, the width of rectangle:

Width = $x-5$

= $6-5$

= $1$

Therefore, the width of rectangle is 1 unit.

8 0

3 years ago

PLEASE HELP, TY! WILL MARK BRAINLIEST!

just olya [345]

Answer: y = 6

Step-by-step explanation:

The opposite sites of a parallelogram should be equal length. Therefore $7y = y + 36$ , so $6y = 36$ and thus $y = \boxed{6}$ .

4 0

2 years ago

13. If AC = 16, DE = 8 and BE = 6, find AE. Please show all work

ollegr [7]

Answer:

AE = 4

Step-by-step explanation:

Use the formula

AE*EC = DE*EB

Since we don't know AE or EC, let AE = x and then EC will = 16 - x. The formula then becomes

x(16 - x) = 8(6)

$16x-x^2=48$

Getting everything on one side and setting it equal to 0 will allow us to factor for x:

$x^2-16x+48=0$

Factoring that gives you that

x = 4 and x = 12. That means that one of those sements has a length of 4 and the other has a length of 12. AE is shorter so it's 4 and EC = 12

5 0

3 years ago