Solve for a:
9a-54=36

Answers

Answer 1
Answer:

Answer:

a=10

Step-by-step explanation:

Step 1: Add 54 to both sides.

9a−54+54=36+54

9a=90

Step 2: Divide both sides by 9.

9a\9 =90\9

a=10

Answer 2
Answer:

Answer:

a=10

Step-by-step explanation:

Add 54 to both sides. You get 9a=90. Divide both sides by 9 and you get a=10.


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The same sample of 25 seniors from the urban school district with the mean and standard deviation N(450, 100). A 95% confidence interval for µ for the population of seniors with a margin of error of ± 25 is used. What is the smallest sample size we can take to achieve this same margin of error?2645506269

professor must randomly select 4 students to participate in a mock debate. There are 18 students in his class. In how many different ways can these students be selected, if the order of selection does not matter?

Answers

    18 divided by 4 gives 4r2 so we could do 32 different ways

HELP PLEASE .... If the geometric mean between 3 and x is 6, find the value of x.

Answers

Answer:

12

Step-by-step explanation:

1.  3/6 = 6/x

2.  Cross multiply:  3x=36

3.  x=12

Need help asap! please help me answer this question! thanks a million.Ten weeks ago Jerry bought stock at 211
/2
; today the stock is valued at 203
/8
. We could say the stock
is performing at which of the following?

A. On par
B. Par equality
C. Below par
D. Above par

Answers

The correct answer for the question that is being presented above is this one: "C. Below par." Ten weeks ago Jerry bought stock at 211/2; today the stock is valued at 203/8. We could say the stock is performing at Below par

The stock is performing "Below par" since its current value is below the purchase price. The correct answer is option C.

To determine how the stock is performing, we compare the current value of the stock to the purchase price.

Ten weeks ago, Jerry bought the stock at 211/2, which can be written as 211.5. Today, the stock is valued at 203/8, which is equivalent to 203.375.

Comparing the purchase price (211.5) to the current value (203.375), we can see that the stock has decreased in value.

Therefore, the stock is performing "Below par" since its current value is below the purchase price.

Hence, the correct answer is option C.

Learn more about the stock price here:

brainly.com/question/15021152

#SPJ6

It's not b please help me

Answers

the answer is C. all you have to do is subtract the exponents 
To divide variables, it is subtraction!

So, a^3 - a^2 = a

b^2 - b = b. So in conclusion your answer is C. ab. Hope this helped!

The coordinates of parallelogram PVWZ are P(0, 0), V(a, b), and Z(c, 0). Find the coordinates of W without using any new variables.Any help I could get on this one would be great! I don't understand this at all.

Answers

Answer:

Co-ordinates of W must be (c+a,b).

Step-by-step explanation:

We are given that,

PVWZ is a parallelogram with vertices P(0,0), V(a,b) and Z(c,0).

Since, PVWZ is parallelogram.

The possible line segments are PV, VW, WZ and ZP.

Also, as the opposite sides must be parallel for the parallelogram, the co-ordinates will move accordingly.

So, we see from the figure that,

Co-ordinates of W must be (c+a,b).

Ill take (c,b) would be the answer

How do you solve this problem using substitution and then check it?:y= -3x-2 
2x+5y=16

Answers

You have to get a variable by itself like in here... Y is itself so in the other equation or we can say second one you just have to sub it in... Like

2x+5(-3x-2)=16
2x-15x-10=16
Now you just have to subtract 2 from 15, because of the same variable that is (x)
So -13x-10=16
Take 10 to the other side means add from the both sides, that will get you at
-13x=26
So now x= -2
Remember you added because it was -10 if it would be a positive 10 then you have to subtract it from both of the sides but since here it was negative so you just added them up
Hope i helped
We have the variable y so lets substitute
y=-3x-2
2x+5y=16

2x+5y=16
2x+5(-3x-2)=16
2x-15x-10=16
-13x=26
x=-2

y=-3x-2
  =-3(-2)-2
  =4

2x+5y=16
2(-2)+5(4)=16
-4+20=16
16=16