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gregori [183]
2 years ago
13

What is the x value of 2x+3y=18 and x+7y=31

Mathematics
1 answer:
RSB [31]2 years ago
6 0

Answer: the first question is 9 -3/2y and the second one is 31 - 7y

Step-by-step explanation:

on the first one you move the variable to the right and divide by 2 and on the second one you can only move the variable to the right because you don’t know x to solve the entire equation! hope this helps

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One urn contains one blue ball (labeled b1) and three red balls (labeled r1, r2, and r3). a second urn contains two red balls (r
Flura [38]

Answer:

12 possibilities

Step-by-step explanation:

In the first urn, we have 4 balls, and all of them are different, as they have different labels, so the group of two red balls r1 and r2 is different from the group of red balls r2 and r3.

The same thing occurs in the second urn, as all balls have different labels.

The problem is a combination problem (the group r1 and r2 is the same group r2 and r1).

For the first urn, we have a combination of 4 choose 2:

C(4,2) = 4!/2!*2! = 4*3*2/2*2 = 2*3 = 6 possibilities

For the second urn, we also have a combination of 4 choose 2, so 6 possibilities.

In total we have 6 + 6 = 12 possibilities.

3 0
2 years ago
Read 2 more answers
If f(x) = –5x – 4 and g(x) = –3x – 2, find (f – g)(x).
erica [24]

Answer:

  C.  (f – g)(x) = –2x – 2

Step-by-step explanation:

(f – g)(x) = f(x) – g(x)

  = (–5x – 4) – (–3x – 2)

  = –2x – 2

3 0
2 years ago
sal makes a 10% commission on the first $5000 of sales and 15% on any sales over $5000. find his total graduated commission on $
Helga [31]
0.10(5000) = 500
0.15(10,000) = 1500

total commission on 15,000 = (150 + 500) = 2,000
5 0
3 years ago
Please help thanks so much.
Alik [6]
You can see if they are similar by looking at the sides.

If each of the sides have the same proportion then they are similar.

24/3 = 8
32/4 = 8
112/14 = 8

Yes they are similar and their ratio is 1:8

Hope this helps :)
3 0
3 years ago
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A shopkeeper with a basket of eggs finds that if he sells 3 eggs at a time there is only one egg left if he sells four eggs at a
Agata [3.3K]

Answer:

Step-by-step explanation:

add a picture of the question please

7 0
2 years ago
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