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defon
3 years ago
11

I need help understanding system of equations​

Mathematics
1 answer:
Vikki [24]3 years ago
5 0

Hello friend ☺

System of equations : collection of two or more equations with a same set of unknowns.

By solving these equations , we can find the all unknown values. Which is also satisfy every equation.

Problem on these equations may be given in word or narrative form and solve in algebraic form.

Thanks ❤

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What is the sum of 3.4a +( -3.5a)
Brut [27]
The sum of 3.4a + -3.5a is..
3.4
+-3.5
-------
- .1a
It is negative because -3.5 is grater than positive 3.4
3 0
4 years ago
A music store owner noted that CD sales had dropped 33% from one quarter to the next. If the owner sold 579 units in the first q
Paul [167]

Answer:  387.93 units

Step-by-step explanation:

You have the following information given in the problem above:

- The sales  had dropped 33% from one quarter to the next.

- The owner sold 579 units in the first quarter.

Thefore, to calculate the number of units she sold in the next quarter (which you can call x), you must can apply the following proccedure:

x=579units-(0.33)(579units)

Then the answer is the following:

x=387.93units

4 0
3 years ago
8.0 × 105 + 6.0 × 107 = A. 14,000,000,000,000 B. 140,000,000 C. 60,800,000 D. 68,000,000
solong [7]
The answer is not on the list the answer is 90,522 and that is not up on the list
4 0
3 years ago
5 -2x + 6y= -38<br> ? 3x – 4y = 32<br> •(-4, - 5)<br> •(-5, 4)<br> •(1, – 6)<br> (4, - 5)
Svet_ta [14]

Answer:

Option D (4, -5)

Step-by-step explanation:

This question can be solved by various methods. I will be using the hit and trial method. I will plug in all the options in the both the given equations and see if they  balance simultaneously.

Checking Option 1 by plugging (-4, -5) in the first equation:

-2(-4) + 6(-5) = -38 implies 8 - 30 = -38 (not true).

Checking Option 2 by plugging (-5, 4) in the first equation:

-2(-5) + 6(4) = -38 implies 10 + 24 = -38 (not true).

Checking Option 3 by plugging (1, -6) in the second equation:

3(1) - 4(-6) = 32 implies 3 + 24 = 32 (not true).

Since all the options except Option 4 have been ruled out, therefore, (4,-5) is the correct answer!!!

7 0
3 years ago
Rearrange x=3g+2 to make g the subject
Rashid [163]
x =   3g + 2
- 2          - 2
x - 2 = 3g
÷ 3       ÷ 3

x - 2 ÷ 3 = g
3 0
3 years ago
Read 2 more answers
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