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aleksandrvk [35]
3 years ago
8

Two study designs are described here. Which statement is a correct interpretation of the designs?

Mathematics
1 answer:
Alex787 [66]3 years ago
5 0

Answer:

A is correct

Step-by-step explanation:

I have taken this class before

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Jessica is returning home from a trip. The function d(t)=458-60t models the distance, in miles, that Jessica is from her house t
S_A_V [24]

Answer: D. 453 miles .

Step-by-step explanation:

Given: The function d(t)=458-60t models the distance, in miles, that Jessica is from her house <em>t </em>hours after she began returning home.

At t = 5 minutes = \dfrac{5}{60} hour     [1 hour = 60 minutes],

Distance covered by Jessica in 5 minutes = d(\dfrac{5}{60})=458-60(\dfrac{5}{60})

=458-5=453\ miles

Jessica is 453 miles from her home after 5 minutes she began returning home.

Hence, the correct option is D. 453 miles .

4 0
3 years ago
Determine the equation of the altitude from A.
Rudik [331]

Answer:

y = - 3x + 11

Step-by-step explanation:

the altitude is a line from the vertex A drawn perpendicular to the opposite side BC

calculate the slope of BC using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = B (- 7, 3 ) and (x₂, y₂ ) = C (- 1, 5 )

m_{BC} = \frac{5-3}{-1-(-7)} = \frac{2}{-1+7} = \frac{2}{6} = \frac{1}{3}

given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{1}{3} } = - 3

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept ) , then

y = - 3x + c ← is the partial equation

to find c substitute A (4, - 1 ) into the partial equation

- 1 = - 12 + c ⇒ c = - 1 + 12 = 11

y = - 3x + 11 ← equation of altitude from A

7 0
2 years ago
Please answer, i don't know how to solve them. please and thank you
kotykmax [81]

Answer:

C or 260.48

Step-by-step explanation:

Find area of both triangles:

20*16/2/2*2=160

Find area of circle;

pi*r*r/2= area of circle

d/2=r

16/2=8

pi*8*8/2 is about 100.53

160+100.53=260.53

7 0
2 years ago
The least common multiples of 4,10,12,15
lisabon 2012 [21]
Find the least common multiples of 4, 10, 12, 15

multiples of   4:   
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80

multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120

multiples of 12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120

multiples of 15: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150

The least common multiple of 4, 10, 12, and 15 is 60.

4 x 15 = 60
10 x 6 = 60
12 x 5 = 60
15 x 4 = 60
6 0
3 years ago
Can someone please me on that one ? Thanks an advance ? Don't forget to show your work :)
BARSIC [14]
One cylinder has two bases and one side, and the side is a rectangle.

So S = 2*base + side

S = 2* (pi*27^2) + (2*pi*27*37) = 3456pi
6 0
4 years ago
Read 2 more answers
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