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3 years ago

Solve by factoring 15x^2 - 25x =0

Mathematics

1 answer:

dalvyx [7]3 years ago

5 0

Answer:

Answer below!

Step-by-step explanation:

$15x^{2} -25x=0\\5x(3x-5)=0\\ \frac{5x}{5}=\frac{0}{5} ;x=0$

3x - 5 = 0

Add 5 to both sides;

3x = 5

Divide both sides by 3;

$x=\frac{5}{3}$

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Write the equation of the line passing through the point (-3,-9) and perpendicular to the line x=-4

lisabon 2012 [21]

Answer:

y = -9

Step-by-step explanation:

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4 years ago

Melissa poured 1/4 can of syrup into a bowl. She spilled 1/5 of the syrup into a bowl that was left of the can. What fraction of

Leto [7]

To make this easier we can convert the fractions to whole numbers and then back.
Lets have 100 represent the can.
1/4 = .25 so we will convert it to 25
100 - 25 = 75
1/5 of 75 is 15
75 - 15 = 60
60/100 = 6/10 = 3/5

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3 years ago

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Kamila [148]

Answer:

Step-by-step explanation:

Sustituye la variable

con

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3 0

3 years ago

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madam [21]

They look correct to me!

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4 years ago

The height of a toy rocket that is shot in the air with an upward velocity of 48 feet per second can be modeled by the function

Irina18 [472]

Answer:

B) 36 ft

Step-by-step explanation:

Given:

The height as a function of time is given as:

$f(t)=-16t^2+48t$

At maximum height, the instantaneous velocity becomes 0. The instantaneous velocity is the first derivative of the height function.

So, the derivative of the the given function is 0 at the maximum height.

Differentiating the above function with time, we get

$f'(t)=\frac{d}{dt}(-16t^2)+\frac{d}{dt}(48t)\\f'(t)=-32t+48$

Now, equating the derivative to 0 and finding time.

$f'(t)=0\\-32t+48=0\\32t=48\\t=\frac{48}{32}=1.5\ s$

Therefore, time taken to reach maximum height is 1.5 s.

Now, maximum height is obtained by plugging in $t=1.5$ in the height equation.

Maximum height is given as:

$h_{max}=-16(1.5)^2+48(1.5)\\h_{max}=-16\times 2.25+72\\h_{max}=-36+72\\h_{max}=36\ ft$

4 0

3 years ago

Read 2 more answers