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poizon [28]
3 years ago
9

Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work.

Mathematics
1 answer:
Sphinxa [80]3 years ago
4 0

Answer:

x= +2\sqrt{5} or -2\sqrt{5}

Step-by-step explanation:

for the given equation,

4 - x^{2} = -16

using rules of equation and inverse operations as isolating x on one side of equation,

interchanging sides  of equation  we get,

x^{2} =20

x= +\sqrt{20} or x= -\sqrt{20}

x= +2\sqrt{5}  or x= -2\sqrt{5}

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I need to get 2 answered please help it’s with mean, median and mode
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median= middle number, 5 6 7, 6 is the median
mode= most repeated number, so 4,4,4,4,4,4,4,5.5,6       4 is the mode
7 0
2 years ago
Solve T = 7c-2d for d.
stepladder [879]

Answer:

d =  \frac{t - 7c}{ - 2}

Hope this helps at all. :)

4 0
3 years ago
Find the next term in the sequence 3, 6, 9, 15, 24,
leonid [27]
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3 years ago
Help help help if u can answer this I’ll mark u brainliest (6) (the one in the middle)
Hoochie [10]

You just have to plug in each thing:

So f(0):

3(0)^2 - 4 = -4

so its not A

f(-2) and f(2):

3(-2)^2 - 4

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now we don't even have to calculate these, anything to the power of an even number is a positive number so -2^2 and 2^2 both equal 4

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4 0
3 years ago
Write an equation in slope-intercept form from the points (0, 3) and (-4,-1)
Bezzdna [24]

Answer:

y = x + 3

Step-by-step explanation:

Slope-intercept form is represented by the formula y = mx + b. We can write an equation in point-slope form first, then convert it to that form.

1) First, find the slope of the line. Use the slope formula  m = \frac{y_2-y_1}{x_2-x_1} and substitute the x and y values of the given points into it. Then, simplify to find the slope, or m:

m = \frac{(-1)-(3)}{(-4)-(0)} \\m = \frac{-1-3}{-4-0} \\m = \frac{-4}{-4} \\m = 1

Thus, the slope of the line must be 1.

2) Now, since we know a point the line intersects and its slope, use the point-slope formula y-y_1=m(x-x_1) and substitute values for m, x_1, and y_1. From there, we can convert the equation into slope-intercept form.

Since m represents the slope, substitute 1 in its place. Since x_1 and y_1 represent the x and y values of a point the line intersects, choose any one of the given points (either one is fine) and substitute its x and y values into the equation, too. (I chose (0,3).) Finally, isolate y to find the answer:

y-3=1(x-0)\\y-3 = x\\y = x + 3

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2 years ago
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