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lukranit [14]
3 years ago
15

Please help me answer these questions

Mathematics
1 answer:
mamaluj [8]3 years ago
7 0

Answer:

i dont undrstand

Step-by-step explanation:

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What’s the area of this trapezium
nata0808 [166]

Step-by-step explanation:

Area of trapezium

=1/2 h(a+b)

=1/2 2(6+4)

=1/2 2.10

=1/2 20

=10cm. cm

5 0
3 years ago
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What is the maximum height of the projectile? 82 feet 190 feet 226 feet 250 feet.
Contact [7]

The maximum height of the projectile will be 226 feet that is, as per question, the option c.

A quadratic equation , y = ax²+bx+c  (equation 1)

given, axis of symmetry is

x = \frac{b}{2a}

As per the question:

The path of the projectile is modeled using the equation :

h(t) = -16t²+48t+190  (equation 2)

h(t) = height after t time.

comparing equation 1 and equation 2, we get

a = -16 and b = 48

further, t = \frac{48}{2(-16)}

= \frac{48}{32}

= 1.5sec

Substituting the found value in equation 2, we get

h(1.5) = -16(1.5)²+48(1.5)+190

h(1.5) = -36+72+190

h(1.5) = 226ft.

Thus, the maximum height of the projectile at 1.5 sec is, 226 feet.

Note that the full question is:

A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectile is modeled using the equation h(t) = –16t2 + 48t + 190.

What is the maximum height of the projectile?

A. 82 feet

B. 190 feet

C. 226 feet

D. 250 feet

To learn more about velocity: brainly.com/question/25749514

#SPJ4

4 0
1 year ago
HELP ME ANSWER THIS NO EXPLANATION JUST THE ANSWER
Ipatiy [6.2K]
I’m pretty sure d, but not sure sorry
7 0
3 years ago
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A professional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of
noname [10]

Answer:

The answer is A). I took the test on usatestprep

Step-by-step explanation:

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3 years ago
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What is the answer to this question ? Please answer !!
mylen [45]

\text{Let}\ k:y=m_1x+b_1\ \text{and}\ k:y=m_2x+b_2,\ \text{then}\\\\k\ \perp\ l\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\-------------------------\\\text{We have}\ 5x-y=-4.\ \text{Convert it to the slope-intercept form:}\\\\5x-y=-4\qquad\text{subtract 5x from both sides}\\\\-y=-5x-4\qquad\text{change the signs}\\\\y=5x+4\to m_1=5\to m_2=-\dfrac{1}{5}\\\\\text{Therefore we have}\ y=-\dfrac{1}{5}x+b.\\\\\text{The line passing through the point (-2, 2).}\\\text{Put the coordinates of the point to the equation:}

2=-\dfrac{1}{5}(-2)+b\\\\2=\dfrac{2}{5}+b\qquad\text{subtract}\ \dfrac{2}{5}\ \text{from both sides}\\\\1\dfrac{3}{5}=b\to b=\dfrac{8}{5}\\\\\text{Therefore we have the equation of a line in slope-intercept form:}\\\\y=-\dfrac{1}{5}x+\dfrac{8}{5}\\\\\text{Convert it to the standard form}\ Ax+By=C:\\\\y=-\dfrac{1}{5}x+\dfrac{8}{5}\qquad\text{multiply both sides by 5}\\\\5y=-x+8\qquad\text{add x to both sides}\\\\\boxed{x+5y=8}\to\boxed{[B]}

8 0
3 years ago
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