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3 years ago

The volume vv of a pyramid is given by the formula v=13bhv=13bh, where bb is the area of the base and hh is the height.

Mathematics

1 answer:

Setler [38]3 years ago

4 0

Volume of pyramid(V) = $\frac{1}{3}bh$

where 'b' is the base area and 'h' is the height.

We have to determine the formula for height 'h'.

$V = \frac{1}{3}bh$

Multiplying by '3' on both the sides of the equation.

$3V = bh$

$h = \frac{3V}{b}$

So, the formula for height 'h' of pyramid is $h = \frac{3V}{b}$ .

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How many terms does the expression - 9+ 5.5 have? Explain.

melomori [17]

Answer:

there are two terms which means it is a binomial algebraic expression

Step-by-step explanation:

the first term is -9

and the second term is 5.5

note:be aware that the negative sign is there in the first term and the reason that we didn't put the negative sign in the second is because there is no negative sign before 5.5 .

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3 years ago

A website offers free shipping to customers who order at least $75 dollars worth of merchandise. Della is ordering 2 flashlights

Vlada [557]

It’s A. 11 or more
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3 years ago

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fgiga [73]

Answer:

A. y = 0.5(2)^x

Step-by-step explanation:

Exponential functions have a horizontal asymptote. The equation of the horizontal asymptote is y = 0 .

Horizontal Asymptote:

y = 0

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2 years ago

A golfer hits a ball from a starting elevation of 2 feet with a velocity of 70 feet per second down to a green with an elevation

ikadub [295]

Answer:

4.50 s

Step-by-step explanation:

The motion of the ball is represented by the following equation:

$h(t) = 2+70t-16t^2$ (1)

where

h(t) is the elevation at time t

2 ft is the initial elevation at t = 0

+70 ft/s is the initial vertical velocity

$-32 ft/s^2$ is the acceleration due to gravity

The green is located at an elevation of -7 feet, so the ball lands on the green when

h(t) = -7

Substituting into (1)

$-7=2+70t-16t^2$

And re-arranging we get

$16t^2-70t-9=0$

This is a second-order equation in the form

$at^2+bt+c=0$

which has solutions

$t_{1,2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ (2)

Here we have:

a = 16

b = -70

c = -9

Substituting into (2) we find the solutions:

$t_{1,2}=\frac{70\pm \sqrt{(-70)^2-4(16)(-9)}}{2(16)}$

The two solutions are:

t = 4.50 s

t = -0.125 s

The second solution is negative, and since negative time has no physical meaning, the only correct solution is

t = 4.50 s

5 0

3 years ago

Yesterday, the movie theater brought in $1,440 in ticket sales and $295.25 in food sales. Today, ticket sales were three-fourths

Mice21 [21]

Answer:

Nina is not correct because 393.5$ less then yesterday's ticket sales.

Step-by-step explanation:

To find total sales she he is not correct because

3 / 4 of 1440 = 1,080$ ticket sales from yesterday

and 295.25 - 33.50 = 261.75$

Therefore, ( 3 / 4 * 1440 ) + ( 295.25 - 33.50 ) = 1,341.75$ sale of today

Ticket from yesterday and today

1,080 - 1,341.75 = 393.5

393.5$ less then yesterday's ticket.

6 0

3 years ago

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