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3 years ago

Pleaseeseeeee help with question 7

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

A and d both have -8 at x=0 so they both have the same y intercept

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What is the appropriate metric unit for measuring the capacity of a water cooler?

Rudiy27

It is probably best to measure a volume of this size in Liters. This is a metric unit. There are 1000 liters in one cubic meter.

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3 years ago

Find the slope and the y-intercept of the graph of y=−45x−2.

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Answer:

Slope: -45

Y-intercept: -2

Step-by-step explanation:

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3 years ago

Evaluate the dot product of (6,-3) and (8,5).

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4 years ago

PLEASE HELP!!!!! A satellite telescope has a parabolic dish. Satellite signals are collected at the focal point (focus) of the

-BARSIC- [3]

The dish illustrates operations on a parabola.

The depth of the parabolish dish is 160 feet.

The bowl is said to be a parabola.

So, we have:

$\mathbf{(x -h)^2 = 4p(y - k)}$

Where:

$\mathbf{Focus: p = 40}$

$\mathbf{Vertex:(h,k) = (0,0)}$

From the question, the diameter is 160 feet.

So, the radius (r) is:

$\mathbf{r = \frac{160}{2} = 80}$

So, the coordinate of the depth of the parabola would be:

$\mathbf{(x,y) = (60 + 100,y)}$

$\mathbf{(x,y) = (160,y)}$

Substitute these values in $\mathbf{(x -h)^2 = 4p(y - k)}$

So, we have:

$\mathbf{(160 - 0)^2 = 4 \times 40 \times (y -0)}$

$\mathbf{160^2 = 160y}$

Divide both sides by 160

$\mathbf{160 = y}$

Rewrite as:

$\mathbf{y = 160 }$

Hence, the depth of the parabolish dish is 160 feet.