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kondaur [170]
3 years ago
8

Determine the equation of the inverse of y = 7x + 2

Mathematics
2 answers:
lukranit [14]3 years ago
7 0

Answer:

x=7y+2

Step-by-step explanation:

switch the letters

horsena [70]3 years ago
5 0

Answer: y=(x-2)/7

Step-by-step explanation:

To find the inverse of the equation, you want to replace all the x with y and all the y with x. Our equation would be:

x=7y+2

Now that we have our equation, we can solve for y.

x-2=7y

y=(x-2)/7

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aliina [53]
The answer would be B
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Book $22.50 markup percent 42% what is the markup and retail price.
sertanlavr [38]
I multiplied, I converted the percentage to a decimal .42
Your answer should be 9.45. 
8 0
3 years ago
Read 2 more answers
One number is larger than another by 9. If the greater number is increased by 10, and the lesser number is tripled, the sum of t
kkurt [141]

Answer:

The larger number is -6, the smaller number is -15

Step-by-step explanation:

We have two numbers, a and b.

We know that one number is larger than another by 9.

Then we can write:

a = b + 9

then a is larger than b by 9 units.

If the greater number is increased by 10 (a + 10) and the lesser number is tripled (3*b), the sum of the two would be -41:

(a + 10) + 3*b = -41

So we got two equations:

a = b + 9

(a + 10) + 3*b = -41

This is a system of equations.

One way to solve this is first isolate one variable in one of the two equations:

But we can see that the variable "a" is already isolated in the first equation, so we have:

a = b + 9

now we can replace that in the other equation:

(a + 10) + 3*b = -41

(b + 9) + 10 + 3*b = -41

now we can solve this for b.

9 + b + 10 + 3b = -41

(9 + 10) + (3b + b) = -41

19 + 4b = -41

4b = -41 -19 = -60

b = -60/4 = -15

b = -15

then:

a = b + 9

a = -15 + 9 = -6

a = -6

7 0
2 years ago
Solve for n.<br> Q=5n+5z
kirill115 [55]
q=5n+5z\ \ \ \ \ \ \ |subract\ 5z\\\\q-5z=5n\ \ \ \ \ \ \ |divide\ by\ 5\\\\n=\frac{q-5z}{5}\\\\Answer\ is\ n=\frac{q-5z}{5}
5 0
3 years ago
Read 2 more answers
Please answer this correctly
Evgesh-ka [11]

Answer:

1/9

Step-by-step explanation:

The die has sides 1,2,3,4,5,6

P( less than 5) = 1,2,3,4 / total

                        =4/6 = 2/3

Then rolling again

P(greater than 5) = 6/total = 1/6

P( less than 5,greater than 5) = 2/3* 1/6= 1/9

3 0
3 years ago
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