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Juli2301 [7.4K]
2 years ago
12

How to substitute equations

Mathematics
1 answer:
skelet666 [1.2K]2 years ago
5 0
When you are substituting equations, all you are doing is plugging in variables. Lets do an example..something random but easy...
y = 2x - 3
4x + 2y = 10
So since 2x + 3 equals y we are going to plug in those numbers into the second equation.
4x + 2(2x - 3) = 10
Now we distribute
4x + 4x - 6 = 10
Combine like terms.
8x - 6 = 10
Add 6 to both sides.
8x = 16
Divide.
x = 2
And thats how you substitute equations.
I hope this helps love! :)
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Answer:

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6 0
2 years ago
a wooden fruit crate will hold 62 pounds of fruit. the crate already has 18 pounds of fruit in it. which inequality represents t
tatuchka [14]

Answer:

p + 18 \leq 62

Step-by-step explanation:

Given

Total = 62\ lb

Current = 18\ lb

Required

Write an inequality to represent the scenario?

Represent the additional number of pounds with p.

When p is added to the current pounds, the weight must be less than or equal to the total possible weights

In other words:

p + current \leq total

Substitute values for current and total

p + 18 \leq 62

Hence, the inequality that describes the scenario is: p + 18 \leq 62

7 0
3 years ago
Someone answer the whole thing fast plz
Brilliant_brown [7]

Answer:

y = 2x + 54

Step-by-step explanation:

slope of equation:

(y2-y1)/(x2-x1)

= (72-58)/(9-2)

= 14/7

= 2

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58 = 2(2) + b

58 = 4 + b

b = 54

6 0
3 years ago
4.2 divided by 8.19 =
Damm [24]
Well, 4.2 divided by 8.19 = 0.51282051282 But if you switch it to 8.19 divided by 4.2 that would equal 1.95

Hope I helped!

- Debbie <span />
3 0
3 years ago
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7\5=28/x so complete the equation by simple algebra.so the x will be 20
7 0
2 years ago
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