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-Dominant- [34]
3 years ago
9

How do i isolate y in 4x - 2y = 22

Mathematics
1 answer:
Irina18 [472]3 years ago
5 0

4x - 2y = 22

Start by adding 2y to both sides to cancel out the -2y

4x = 22 + 2y

Now you can divide by 4

x = 22/4 + 2y/4

Reduce all the fractions to get your answer, which is

x = \frac{11}{2} + \frac{y}{2}

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6-y-x^2 use x=5 and y=4
Ulleksa [173]

Answer:

6 - 4 - 5 ^ 2 = -23

hope this helps

5 0
3 years ago
A large emerald with a mass of 378.24 grams was recently discovered in a mine. If the density of the emerald is 2.76grams over c
bogdanovich [222]

Answer:

Volume of emerald = 137.04cm³

Step-by-step explanation:

Given that:

Mass of emerald = 378.24grams

Density of emerald = 2.76grams/cm³

Volume = ?

The equation for this relationship is ρ = m / V in which ρ is density, m is mass (kg or g) and V is volume (cm³ or m³) making the density unit kg/m³ or g/cm³.

Therefore

Density = mass/volume

Volume = Mass/density

i.e

Volume of emerald = Mass of emerald / Density of emerald

Volume of emerald = 378.24grams / 2.76grams/cm³

Volume of emerald = 137.043cm³ ~137.04cm³

Volume of emerald =137.04cm³

6 0
3 years ago
Does the parabola h(t) = -16t2 + 250t open up or down? Why does this make sense?
mash [69]
Down because it has a negative coefficient.
3 0
3 years ago
In circle F, the measure of ∠AFE is equal to 120° and the measure of arc BD is equal to 20°.
Aleks04 [339]

Answer:

40

Step-by-step explanation:

AFE=120 so arc AE is also 120

those 3 angles add up to 180 and 180-120-20=40

6 0
3 years ago
What is the 8th term in the arithmetic sequence defined by the explicit formula An = 2n + 7
ICE Princess25 [194]

9514 1404 393

Answer:

  23

Step-by-step explanation:

Put 8 in the formula and do the arithmetic.

  A8 = 2·8 +7 = 16 +7

  A8 = 23

5 0
3 years ago
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