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mamaluj [8]
3 years ago
10

The arch of a bridge can be modeled by

d="TexFormula1" title="y=-\frac{1}{170}(x-225)(x+225)" alt="y=-\frac{1}{170}(x-225)(x+225)" align="absmiddle" class="latex-formula">, where x and y are measured in feet. The x-axis represents the ground. Find the width of the arch of the bridge at ground level.

Mathematics
2 answers:
Usimov [2.4K]3 years ago
8 0

Answer:

450 feet at ground level

Step-by-step explanation:

The width of the bridge at ground level will be where the function intercepts the x-axis also known as the roots or zeros of the function. They are found using the zero product property to set each factor equal to 0.

This means (x-225) = 0 and (x + 225) = 0. So x = -225, 225.

This means the width is the absolute value of |-225| + 225 since distance cannot be negative. This makes it 450 feet.

saveliy_v [14]3 years ago
4 0

Answer is provided in the image attached.

Have a great day!

<em>-TheBlueFox-</em>

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2 years ago
1. What is the measure in radians for the central angle of a circle whose radius is 6 cm and intercept arc length is 5.4 cm?
fgiga [73]
Hello!

1.
find circumferece
c=2pir
c=2*6*pi=12pi
intercept is 5.4

2pi radians=all

part/whole=part/whole
5.4/12pi=x/2pi
times both sides by 12pi
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answer is 0.9 radians



2. 
assuming 9pi/5 radians

find circumference
c=2pir
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arc/circumference=(9pi/5)/2pi

x/(53.8pi)=(9pi/5)/(2pi)
x/(53.8pi)=18/5
times both sides by 53.8pi
x=608.46266 m
about x=608.46 m


Hope this Helps! Have A Wonderful Day! :) 
5 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bars(s).
kirza4 [7]

Answer:

(a)23 (b)90 (c)3

Step-by-step explanation:

The equation for the line of best fit for this situation is given as

y=\frac{3}{10}x+8

where x=average temperature in degrees

y=average number of hot dogs she sold,

(a) The expected number of hot dogs sold when the temperature is 50° would be___hot dogs.

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If the vendor sold 35 hot dogs, the temperature is expected to be 90 degrees.  

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3 0
3 years ago
Roger has $2, $1 and 50 cent pieces in the ratio of 5:4:2. If 30 of roger’s coins are 50 cent pieces, how many $2 coins and $1 c
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Answer:

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