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3 years ago

6x-y=-145 X=4-2y Applying systems of linear equations.

Mathematics

1 answer:

sdas [7]3 years ago

5 0

So you change the x

24-12y-y=-145
24-13y=-145
-13y=169
13y=169
y=13

x=4-2x13
x=-22

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Solve 2x-4÷ 5 = 4 really need help fast

MrRa [10]

Answer:

x=12

Step-by-step explanation:

2x-4=20

2x=24

x=12

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3 years ago

Read 2 more answers

the scale factor of the blueprint of a theater stage to the actual theater stage is 1in/6ft. the area of the stage on the blue p

liq [111]

Answer: 1728ft^2
The scale of the blueprint is 1in=6ft and the area of the stage is 48in^2. To convert the area, you just need to find the scale with inch^2. The equation would be:

1 inch=6ft 
inch^2= x ft^2
(6ft)^2= x ft^2
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3 years ago

the gross income is $215 per week the deductions are $15.16,$29.33,2%,1%,and 3% what is the net income

Naddik [55]

State tax = 2% of $215 = 0.02 x $215 = $4.30
city tax = 1% of $215 = 0.01 x $215 = $2.15
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3 years ago

The area of a rectangular wall of a barn is 140 square feet. Its length is 6 feet longer than twice its width. Find the length a

Lubov Fominskaja [6]

Do you need to graph it?

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3 years ago

Video Example EXAMPLE 1 Find the linearization of the function f(x) = x + 1 at a = 3 and use it to approximate the numbers 3.98

Blizzard [7]

Answer:

the linearization is y = 1/4x +5/4

the linearization will produce overestimates

the values computed from this linearization are ...

f(3.98) ≈ 2.245

f(4.05) ≈ 2.2625

Step-by-step explanation:

Apparently, you have ...

$f(x)=\sqrt{x+1}$

from which you have correctly determined that ...

$f'(x)=\dfrac{1}{2\sqrt{x+1}}$

so that f(3) = 2 and f'(3) = 1/4. Putting these values into the point-slope form of the equation of a line, we get the linearization ...

g(x) = (1/4)(x -3) +2

g(x) = (1/4)x +5/4

The values from this linearization will be overestimates, as the curve f(x) is concave downward everywhere. The tangent (linearization) is necessarily above the curve everywhere.

At the given values, we find ...

g(3.98) = 2.245

g(4.05) = 2.2625

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3 years ago