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exis [7]
2 years ago
8

An arrow is shot vertically upward at a rate of 210 feet per second. Use the projectile formula h = −16t2 + v0t to determine at

what time t (in seconds) the height of the arrow will be 400 feet.
Mathematics
1 answer:
Klio2033 [76]2 years ago
7 0

Answer:

Time equal to 3.30 seconds when the arrow was going up.

Time equal to 7.94 seconds when the arrow was going down.

Step-by-step explanation:

Trust me

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A line passes through the point ( 18 , − 11 ) and has a slope of − 5 . Write an equation in slope-intercept form for this line.
fenix001 [56]

Answer:

The equation of the line in the slope-intercept form is y = -5x + 79

Step-by-step explanation:

The slope-intercept form of the linear equation is y = m x + b, where

  • m is the slope of the line
  • b is the y-intercept

∵ The slope of the line is -5

∴ m = -5

∵ The form of the equation is y = m x + b

→ Substitute the values of m in the form of the equation

∴ y = -5x + b

→ To find b substitute x and y in the equation by the coordinates

   of any point on the line

∵ The line passes through the point (18, -11)

∴ x = 18 and y = -11

∵ -11 = -5(18) + b

∴ -11 = -90 + b

→ Add 90 to both sides to find b

∵ -11 + 90 = -90 + 90 + b

∴ 79 = b

→ Substitute it in the equation

∴ y = -5x + 79

∴ The equation of the line in the slope-intercept form is y = -5x + 79

7 0
3 years ago
Let m = 3.<br><br> Enter &gt; , &lt; , or = to compare the expressions.<br><br><br> 4m−1 ? 5m−4
bazaltina [42]
= because 4 times 3 minus 1 equals 11 and 5 times 3 minus 4 equals 11
4 0
3 years ago
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If anyone knows how to do this
Ahat [919]

Answer:

do what

Step-by-step explanation:

?

7 0
2 years ago
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The following three functions look very similar, but define very different functions. Think about how they are defined and write
tatiyna

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following functions :

sin^4 (x) = f(g(x)) where f(x) = and g(x) =

Sin⁴(x) = sin(x)⁴

g(x) = sin(x),

f(x) = f(g(x)) = f(sin(x)⁴) = x⁴

2.) sin(sin(x)) = f(g(x)) where f(x) = , and g(x) =

g(x) = sin(x) ; sinx = x

g(x) = sin(x)

f(x) = f(g(x)) = sin(x) ; sin(x) = x

f(x) = f(g(x)) = f(sin(x))

f(x) = sin(x)

3. sin x^4 = f(g(x)) where f (x) = , and g(x) = .

Here,

g(x) = x⁴

f(x) = f(g(x)) = sin(g(x)) = sin x

f(x) = sinx

8 0
2 years ago
What is the length of a rugby pitch
s2008m [1.1K]
A typical length is 100m for the field of play plus the depth of the ingoal areas at both ends of the field, say 10m each - total 120m. The width is typically 70m<span> so the area = 120m x </span>70m<span> = 8400 sq m. A full size pitch (22m ingoal) would be 144m x </span>70m<span> = 10080 sq m.</span>
5 0
3 years ago
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