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kkurt [141]
2 years ago
9

Andrew is building a ramp for a snowboarding competition. The rules of the competition say that the height of the ramp must be 8

feet. Andrew has decided to make the base of the ramp and the piece of the ramp that forms the height meet at a 90° angle. The third piece of the ramp will be a straight line connecting the highest point of the ramp to the furthest point of the base, forming a 30° angle across from the 8 foot piece of the ramp. What will be the length of the third piece of the ramp?
A. 13.86 feet
B. 10 feet
C. 16 feet
D. 9.24 feet
Mathematics
1 answer:
Novosadov [1.4K]2 years ago
3 0
Im not just answering for points now this is on g00gIe this the answer is 9.24
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With data from the 2009 National Health Interview Survey, the Centers for Disease Control estimated that 9.4% of U.S. children h
egoroff_w [7]

Answer:

0.12 -1.96*0.013= 0.094

0.12 +1.96*0.013= 0.146

And the best option would be:

0.094 to 0.146

Step-by-step explanation:

For this case we have the following info given:

\hat p=0.12 represent the proportion estimated

SE = 0.013 represent the standard error

Confidence =0.95 represent the confidence level

The confidence interval for the true proportion is given by:

\hat p \pm z_{\alpha/2} SE

And for 95% of confidence the critical value is z_{\alpha/2}= 1.96 and replacing we got:

0.12 -1.96*0.013= 0.094

0.12 +1.96*0.013= 0.146

And the best option would be:

0.094 to 0.146

5 0
3 years ago
Find the axis of symmetry of the parabola
ioda
Answer:
x = -1

step-by-step explanation:
it is on the x-axis and it is -1
6 0
3 years ago
Lines a and bare perpendicular. If the slope of line a is - 2/3 is the slope of line b?
Elena-2011 [213]

Answer:

B.   3/2

Step-by-step explanation:

The slopes of perpendicular lines are negative reciprocals

The negative reciprocals of -2/3

is 3/2

5 0
3 years ago
What is the solution to the following equation?
Snowcat [4.5K]

Answer:

A. x=13

Step-by-step explanation:

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5 0
3 years ago
Graph a line with a slope of -2/5 that contains the point (-3,5)
kotykmax [81]

y=-\frac{2}{5}x+\frac{19}{5}

Further explanation:

We have to find the equation of the line first to graph the line.

The general form of slope-intercept form of equation of line is:

y=mx+b

Given

m=-\frac{2}{5}

Putting the value of slope in the equation

y=-\frac{2}{5}x+b

To find the value of b, putting the point (-3,5) in equation

5=-\frac{2}{5}(-3)+b\\5=\frac{6}{5}+b\\5-\frac{6}{5}+b\\b=\frac{25-6}{5}\\b=\frac{19}{5}

Putting the values of b and m

y=-\frac{2}{5}x+\frac{19}{5}

The graph is made by using online graphing tool Desmos.

Keywords: Equation of line, graph of line

Learn more about graphs at:

  • brainly.com/question/1557905
  • brainly.com/question/1554024

#LearnwithBrainly

4 0
3 years ago
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