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Wewaii [24]
3 years ago
8

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

or the ellipse in which its major axis coincides with the water level.
Mathematics
1 answer:
aksik [14]3 years ago
3 0

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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garik1379 [7]
It would be a rectangle
6 0
3 years ago
3a) There were 25 red markers, 32 blue markers, and 38 green markers in a tub. Explain how you would construct a bar graph for t
Tema [17]

Answer:

Step-by-step explanation:

you would show x and y lines and title frequency to side and colours to bottom

0-40 on the y axis title is frequency

and on bottom graph put the colours. red blue and green always using equal intervals for names or time or colours along the x axis.  

5 0
2 years ago
Read 2 more answers
Jada invest $590 in a money market account. Her account pays 7% simple interest. How much interest will Jada earn after 4 years
mote1985 [20]

Answer:

165.2

Step-by-step explanation:

7%x4=28

28 percent of 590 = <u>165.2</u>

7 0
2 years ago
What is the value of x? enter your answer in the box. x =
leonid [27]

Answer:

Step-by-step explanation:

Sum of all angles of triangle = 180

39 + 102 + x = 180

         141 + x = 180

Subtract 141 from both sides

                 x = 180 - 141

                 x = 39

4 0
2 years ago
Please help asap!! Thank you
djyliett [7]

Step-by-step explanation:

Hey, there!!

Let's simply work with it,

60° + 2x° + (2x+12)° = 180° { being a linear pair}.

or, 72° + 4x = 180°

4x = 180° - 70°

x =  \frac{108}{4}

Therefore, the value of x is 27°.

Now,

2x° = (2×27)°= 54°

(2x+12)° = 2×27°+12°= 66°.

(x+2)= 27+ 2= 29°

Now, The left angle is 27°.

Therefore, The answer is option A.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

6 0
3 years ago
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