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3 years ago

I need help, fast! I'll give brainliest whoever answers

Mathematics

1 answer:

MrMuchimi3 years ago

5 0

Answer:

k = -2j+24

Step-by-step explanation:

We have 2 points on the trend line

(4,16) and (6,12)

We can find the slope

m = (y2-y1)/(x2-x1)

= (12-16)/(6-4)

= -4/2

= -2

The slope is -2

The y intercept is 24 (where it crosses the y axis)

Writing the equation in the form y= mx+b

k = -2j+24

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3 years ago

Write the equation of a parabola that has a vertex of (-2,5.5) and passes through the point (-2.5,2.5).

vekshin1

The equation of a parabola that has a vertex of (-2, 5.5) and passes through the point (-2.5, 2.5) is $y=-12(x+2)^2+5.5$

The vertex form of the equation of a parabola is:

$y=a(x-h)^2+k$

where (h, k) is the vertex of the parabola

(x, y) is the point that the parabola passes through

The vertex, (h, k) = (-2, 5.5)

The point, (x, y) = (-2.5, 2.5)

Substitute h = -2, k = 5.5, x = -2.5, and y = 2.5 into the equation to solve for a.

$2.5=a(-2.5-(-2))^2+5.5\\\\2.5=a(-2.5+2)^2+5.5\\\\2.5-5.5=a(-2.5+2)^2\\\\-3=a(-0.5)^2\\\\-3=0.25a\\\\a = \frac{-3}{0.25} \\\\a = -12$

Therefore, the equation of the parabola is:

$y=-12(x-(-2))^2+5.5\\\\y=-12(x+2)^2+5.5$

Learn more here: brainly.com/question/25667732

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3 years ago

Simplify the expression: -2y^7/14y^5<br><br> (the "^" means that the number behind it is a exponent)

Debora [2.8K]

Answer:

2 $y^{5} \sqrt{y}$

Step-by-step explanation:

i hope this helps

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3 years ago

At the grocery store, Charlie bought a jar of spaghetti sauce for $2.49, a package of spaghetti noodles for $1.58, and a gallon

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Spaghetti sauce - $2.49

Spaghetti noodles - $1.58

Gallon of milk - $3.17

$2.49 + $1.58 = $4.07

$4.07 + $3.17 = $7.24

Answer - $7.24

Hope this Helps!!

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3 years ago