MATHEMATICS HIGH SCHOOL

What are the solutions of the equation: z^2 - 12z + 36 = 0?  A. -6, 6
B. 6, 6
C. 6, -6
D. -6, -6

Answers

Answer 1
Answer: Factor by groups
(Z^2 -6z) (-6z+36)
GCF 1st binomial is z
GCF of 2nd binomial is -6
(z-6)(z-6)
Solutions
6,6

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112 oz= how many pounds are in 112 ounces

Answers

7 pounds 
Hope this helps!

What is the answer for the picture #26

Answers


Oh you're so close !

Just look again at #22, right above it. 
Your answer to #22 is correct.
Think hard again about #22.
You'll see how it can help you solve #26, completely on your own.

the answer is 1/13 ². Because if you divide 1/169 and 1/13, then you get 1/13. With that being said, if you multiply 1/13 and 1/13, then you get 1/169. And of course the symbol ( ² ) means squared so you multiply that number he (² ) is over twice. So like 3², 3*3=9.


Helpful???

When I started here, there were 500 employees. Since then, we have added 35% more employees, so we now have a total of __________ employees.

Answers

Number of employees when i initially started = 500
Percentage increase in the number of employees = 35%
Then
Increase in the number of employees = (35/100) * 500
                                                             = 35 * 5
                                                             = 175
So the total number of employees = 500 + 175
                                                       = 675
So now we have a total of 675 employees. I hope the procedure is not that complicated for you to understand. You can generally use this method for solving similar type of problems in future without requiring any help from anyone.

Sarah Meeham blends coffee for Tasti-Delight. She needs to prepare 160 pounds of blended coffee beans selling for $4.97 per pound. She plans to do this by blending together a high quality bean costing $6.00 per pound and a cheaper bean at $3.25 per pound. To the nearest pound, find how much high quality coffee bean and how much cheaper coffee bean she should blend.

Answers

Given:
let h be the high quality bean
let c be the cheaper bean

h + c = 160
6h + 3.25c = 160*4.97
6h + 3.25c = 795.20

h = 160 - c
6(160 - c) + 3.25c = 795.20
960 - 6c + 3.25c = 795.20
-2.75c = 795.20 - 960 
-2.75c = -164.80
c = -164.80 / -2.75
c = 59.92 or 60 lbs

h = 160 - c
h = 160 - 60
h = 100 lbs

Sarah should blend 60 lbs of cheap coffee bean and 100 lbs of high quality coffee bean.

Help me please im so confused ????

Answers

Answer:

Step-by-step explanation:

I think this is which are in y=mx+b/ So, the ones that are correct would be B

I

m not sure tho... PLEASE MARK BRAINLIEST!!!

Answer:

Please see below.

Step-by-step explanation:

Standard form equations are like the following:

ax - by = c

a, b, and c are the numbers, and x and y are the variables.

Let's look at your case.

Here are the equations that fit into the category:

4x + 1/2y = -9

9x - 2y = -6

-x + y = 2 (I'll have to look deeper into that though)

Hope this helps!

Let me know if I've gotten anything incorrect :)

Algebra 1 solve by elimination
6x-3y=30
6x+y=18

Answers

slimination

the teacher probably wants you to eliminate the x terms since there are an equal number of them

so multiply first equation by -1
-6x+3y=-30
add to second equation
6x-6x+3y+y=18-30
0x+4y=-12
4y=-12
divide by 4
y=-3
subsitute
6x+-3=18
add 3
6x=21
divide both sides by 6
x=21/6=7/2



x=7/2
y=-3
First, we need the coefficient of one of our variables to be the same.
In this case, it's already done for us. We have 6x in both equations.

Now, we just subtract the equations.
\ \ 6x-3y=30\n\underline{-6x+y=18}\n\overline{} \ \ \ \ -\ 4y=12\n\overline{} \ \ \ \ \ \ \ \ \ \ y=-3

Note that the subtraction distributes to each term of that equation.

(you can also do something similar by adding equations--as long as you get rid of of that variable...and if your coefficients aren't the same to begin with, just multiply both sides of one of those equations to get them equal.)

Now, we just use that y = -3 to find x.

6x+y=18\n6x-3=18\n6x=21\n\boxed{x=3.5}
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