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nekit [7.7K]
3 years ago
10

3x + y = -21 x+y=-5 solving systems of equations by substitution

Mathematics
1 answer:
katen-ka-za [31]3 years ago
7 0
First : x=-5-y and then put x in the phrase above
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3s+2t−3 =c<br> −7s−5t =4<br> ​
irinina [24]

Answer:

c=

−4

3

s−t+

−4

3

Step-by-step explanation:

Let's solve for c.

3s+2t−3c−7s−5t=4

Step 1: Add 4s to both sides.

−3c−4s−3t+4s=4+4s

−3c−3t=4s+4

Step 2: Add 3t to both sides.

−3c−3t+3t=4s+4+3t

−3c=4s+3t+4

Step 3: Divide both sides by -3.

−3c

−3

=

4s+3t+4

−3

c=

−4

3

s−t+

−4

3

3 0
3 years ago
PLEASEE I NEED HELP I WILL GIVE BRAINLIST :))) ( btw im dump)
Keith_Richards [23]

Step-by-step explanation:

u know u can download math go and u just take a picture and it will give u the answer

7 0
3 years ago
Can I please get Help With this Question?
kow [346]

Choice B) Commutative Property is the answer

The commutative property of addition says that we can add two numbers in any order. For example: 2+3 = 5 and 3+2 = 5.

In general, the rule can be written as x+y = y+x. The x and y are simply placeholders for numbers. You can think of them as empty boxes to write a number inside. In this case, we have 7.2 for one of the boxes and -5.5 as the other value in the other box.

6 0
3 years ago
Alonzo will rent a car for the weekend. He can choose one of two planes. The first plan has an initial fee of $38 and cost an ad
Naya [18.7K]

Answer:

in 220 miles both plans will cost the same

Step-by-step explanation:

38 + .12m = 49 + .07m

38 + .05m = 49

.05m = 11

m = 11/.05

8 0
2 years ago
How do you do it ???????
Anna007 [38]
Could you type the answer into this answers comments? because I think I see 8452 + something but i cant see what that is
8 0
3 years ago
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