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3 years ago

For what value of α is (α, 9) a solution of the equation y=2x+1?

1 answer:

3 0

Treat (a, 9) as an x and y value

Set the equation equal to 9

9= 2x+1
8= 2x subtract one
4= x divide by 2

a must be equal to four

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A^2+b^2=c^2 a^2+10^2=18^2

Papessa [141]

Answer:

$\sqrt[-4]{14}$

Step-by-step explanation:

7 0

3 years ago

Verify that your point from Question 2 is a solution to 2x-y=-12x−y=−1 AND is also a solution to y=5x-5y=5x−5. What does it mean

Vera_Pavlovna [14]

Answer:

(a) Verified

(b) They are simultaneous equations

Step-by-step explanation:

Given

$2x - y = -1$

$y =5x - 5$

Required

Verify that: $(x,y) = (2,5)$ is a solution

We have:

$2x - y = -1$

Substitute: $(x,y) = (2,5)$

$2 * 2 - 5 = -1$

Evaluate all products

$4 - 5 = -1$

Subtract:

$-1 = -1$

Because both sides of the equation are equal, then the point is a solution

Also: $y =5x - 5$

Substitute: $(x,y) = (2,5)$

$5 = 5 * 2 - 5$

Evaluate all products

$5 = 10 - 5$

Subtract:

$5 = 5$

Because both sides of the equation are equal, then the point is a solution

Because the given point is a solution to both equations, then they are simultaneous equation

7 0

3 years ago

Someone please help, i’m so dumb

yan [13]

Answer:

x=3

plug that in

123 is the answer

Step-by-step explanation:

4 0

3 years ago

What is this I need to know now

katen-ka-za [31]

3x2 is six. If you do that across, you would get 6/6 for both. 6/6 - 6/6 is how much?

7 0

3 years ago

Read 2 more answers

the sum of kate's age and her mother's age is 52. Kates mother is 20 years older than kate. how old is each

Anna35 [415]

The sum of Kate age and her mother's age is 52, so
K + M = 52
Kate's mother is 20 years older then Kate, so
M = 20 + K
How old is each person?
Since M = 20 + K, substitute it into the first equation, that is, replace M with 20 + K

So, K + (20 + K) = 52
K + 20 + K = 52
2K + 20 = 52
Subtract 20 from both sides:
2K = 52 - 20
2K = 32
divide both sides by 2 to get
K = 16
Now we can find M, since M = 20 + K = 20 + 16 = 36
Kate is 16 years old and her mother is 36 years old.
Hope this helps!!1

6 0

3 years ago