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4 years ago

-10=xy + z for x Solve for the indicated variable in each literal equation

1 answer:

8 0

We start with:
-10 = xy + z

When you want to solve for a certain variable, you generally follow pemdas in reverse, so subtract z from both sides first:
-10 - z = xy

And finally, divide both sides by y:
(-10 - z)/y = x

and there we go! sorry for the badly typed equations, I'm on my phone so there's only so much a can do :( hope I helped, and let me know if you have any questions!

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The first term of an (AP) is-8.the ratio of the 7th term to the 9th term is 5:8 calculate the common difference of the progressi

Roman55 [17]

Answer:

The common difference of the progression is 3.

Step-by-step explanation:

Given:

First term of the AP = (a) = -8

Ratio of 7th and 9th term = 5:8

So,

General term of an AP, Tn= a+(n-1)d

Where 'd' is the common difference.

$T_7=-8+(7-1)d$ equation...(i)

$T_9=-8+(9-1)d$ equation...(ii)

According to the question.

⇒ $\frac{-8+6d}{-8+8d} =\frac{5}{8}$ ...cross-multiplying the terms.

⇒ $8(-8+6d)=5(-8+8d)$

⇒ $-64+48d=-40+40d$

⇒ $48d-40d=-40+64$ ...subtracting 40d and adding 64 both sides.

⇒ $8d=24$

⇒ $d=\frac{24}{8} =3$ ...dividing both sides with 3.

So the common difference of the progression is 'd' = 3.

3 0

3 years ago

Need help with slope lines

klasskru [66]

B) negative
C) -3/4
D) y= -2x + 5 the last one might not be right

6 0

3 years ago

Solve for x <br><br>A. 27 B. 37 C. 30 D. 31

Murljashka [212]

Answer:

Step-by-step explanation:

i think

8 0

3 years ago

Here are the instruction plz help asap

Mars2501 [29]

Answer:

again please don't just straight up copy it just use it as a base please also i tried my best and don't know if i got it right

Step-by-step explanation:

Part 2

Organize your data and find the rate of change.

I’m sorry i didn’t know how to make a table so i just did this

Person number 1- Left foot is 9 inches Forearm is 8.5 inches

Person number 2- Left foot is 7.5 inches Forearm is 7 inches

Person number 3- Left foot is 11 inches Forearm is 10.5 inches

Person number 4- Left foot: is 10 inches Forearm is 9.5 inches

Person number 5- Left foot is 6 inches Forearm is 5.5 inches

The rate of change equals y=x-0.5

I believe that it's a function because there is a relationship between 2 variables.

Part 3

Compare rates of change.

The equation below can be used to find the length of a foot or forearm when you know one or the other.

(length of the foot) = 0.860 • (length of the forearm) + 3.302

If you let y = length of the foot and x = length of the forearm, this equation can be simplified to

y = 0.860x + 3.302.

Using this equation, how long would the foot of a person be if his forearm was 17 inches long?

i don’t know how to type all my formulas and work so i'm just going to say the answer i got the rate of change = 0.86x or y=0.86x+3.302

What is the rate of change of the equation from Part A?

For Part A i got y=x-0.5 and that part A has the greater rate of change.

Compare the equation from Part A to your data. Are they the same? Which has a greater rate of change? Why do you think the values are different?

Well, the values have to be different because there are different rates of change and different linear coefficients; and also each input value will result in a different output value because they all have different parameters as well.

Is the relation in your data a function? Why or why not? Could the equation in Part A represent a function? Why or why not? Explain your answer.

Yes, it is a function because each input from part A fits well together with the output on the other set, which matches the definition of a function.

7 0

3 years ago

Read 2 more answers

Please help out its due today :]

slamgirl [31]

Answer:help this kid

Step-by-step explanation:

6 0

3 years ago