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2 years ago

Please help

Mathematics

1 answer:

Nezavi [6.7K]2 years ago

7 0

I'm pretty sure it's A.

But don't count on it

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The arch of a bridge forms the upper half of an ellipse. The arch is 6 meters above the 20-meter-wide river. Write an equation f

aksik [14]

Answer:

$\frac{x^2}{36} + \frac{y^2}{100} = 1$

Step-by-step explanation:

Required

The equation of the ellipse

This is calculated as:

$\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$

Where:

$b =6$ ---- height

$a = 0.5 * 20 =10$ --- width

So:

$\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$

$\frac{x^2}{6^2} + \frac{y^2}{10^2} = 1$

$\frac{x^2}{36} + \frac{y^2}{100} = 1$

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2 years ago

What is the median of this data set? {10, 15, 12, 6, 2}

Vedmedyk [2.9K]

Hello there!

Median is the middle of the data set.

So, first we have to arrange it into proper numerical order (least to greatest).

2,6,10,12,15

Then, we look for the middle number.

It is 10, therefore 10 would be the median of this data set.

5 0

2 years ago

Read 2 more answers

Find the value of x y and z in the rhombus below

maw [93]

Answer:

X = 2(3x + 4)

the rest i dont know sorry D:

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2 years ago

Write 7.630 in word form.

Maru [420]

Answer:

seven and six hundred thirty thousandths

Step-by-step explanation:

the decimal point is when you say and when reading it

4 0

2 years ago

Pls helpppp!! due tonight :(<br><br> 2/j+3=4/5

Natali5045456 [20]

Answer:

2×5 = 4×(j+3)

10 = 4j + 12

10 - 12 = 4j.

-2 = 4j.

j = -2/4.

j= -0.5 or -1/2

4 0

2 years ago