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timurjin [86]
3 years ago
12

I need help can someone help please

Mathematics
1 answer:
kherson [118]3 years ago
7 0
What do you need help on? There isn’t a picture or anything.
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Use the substitution method to solve the system of equations. <br> x+y=11<br> -x=-y-9
allochka39001 [22]
<h2>Answer:</h2>

Like you said, we need to use <u><em>substitution</em></u> to solve for y.

x + y = 11\\-1(-x = -y - 9)\\\\x + y = 11\\x = y + 9\\\\y + 9 + y = 11\\\\2y + 9 = 11\\\\2y = 20\\\\y = 10

Now that we've solved for y, we can plug in the number we got into one of the <u><em>original</em></u> equations. (You can choose either equation, but I will use the first one.)

x + 10 = 11\\\\x = 1

Now we have the solution of this system.

(1, 10)

4 0
2 years ago
1. Carlos has $1,800 in a checking account set aside for summer expenses.
Free_Kalibri [48]

Answer:2 weeks

Step-by-step explanation: if you subtract 1800 by 150 for the two weeks you will get 1500 and if you add 1100 by 200 every week you will get a hundred and fifty

4 0
3 years ago
Please help omg I don’t understand
In-s [12.5K]
The answer will be c
5 0
2 years ago
By what number do you need to multiply the volume of the cone to get the volume of the cylinder?
pickupchik [31]

You need to multiply the volume of a cone by 3 to get the volume of its corresponding cylinder (a cylinder with the same base radius and perpendicular height).

As in:

Vol. of a cylinder= πr²h

and Vol. of a cone= ⅓πr²h

So assuming volume of a cone is ⅓V, then the volume of the cylinder will be ⅓V × 3 which equals V.

8 0
3 years ago
What is the equation of this line?<br><br> y=1/2x-3<br> y=-1/2x-3<br> y=-2x-3<br> y=2x-3
quester [9]

Answer:

y=1/2x-3

Step-by-step explanation:

y=mx+b where m equals the slope and b equals the y-intercept. The slope is 1/2 and the y-intercept is -3. Hope this helps!

6 0
3 years ago
Read 2 more answers
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