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RoseWind [281]
2 years ago
9

Flashback Practice

Mathematics
1 answer:
VashaNatasha [74]2 years ago
4 0

Step-by-step explanation:

We make "x" the subject of formula

2x = 11 + 5

(-5 changes to +5 because it's crossing over the equal to sign =)

2x = 16

(divide both sides by the coefficient of x)

2x ÷ 2 = 16 ÷ 2

X = 8

2. x /4 + 2 = 3

(we solve the Left Hand Side first by finding the LCM)

x/4 + 2

x + 8 = 3

‐---‐------

4

(cross multiply)

x + 8 = 4(3)

x + 8 = 12

x = 12 - 8

x = 4

3. 2(x - 7) = 3x + 10

(2 multiplies the entire bracket)

2x - 14 = 3x + 10

(collect like terms)

2x - 3x = 14 + 10

-x = 24

(multiply both sides by the negative sign "-")

x = -24

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What is the most efficient first step to isolate the variable term on one side of this equation?
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Answer:subtract by 4x on each side first

Step-by-step explanation:

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Find the numerical value if x=4 and y=5. 3x^2+6y=
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228

Step-by-step explanation:

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Indicate the equation of the given line in standard form.
s2008m [1.1K]

The line through (a,b) with slope m is

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Here that's

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