3 years ago

The expression below is the factorization of what trinomal? -1(x+7)(x-4)

Mathematics

1 answer:

Yakvenalex [24]3 years ago

8 0

Fggghfodididididtxitdidotdotd

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Wayne plans to replace the ventilating fand in the oldest greenhouse and needs to know its volume. The greenhouse is shaped of a

Alina [70]

Answer:

628.

Step-by-step explanation:

We need to calculate the radius of the cylinder :

40/2 = 20 feet

We then will calculate the volume of the whole cylinder:

$V = \pi * r^{2} * h = 3.14 * 20^{2} * 120 = 1256$ cubic feet.

However, Wayne greenhouse is just a half of a cylinder, so it's volume are:

$1256 / 2 = 628$ cubic feet.

I'm vietanh and have a good day!

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3 years ago

What is 3\13 times 143 equal

elena-14-01-66 [18.8K]

$\frac{3}{13} *143 = 143 *3 = 429. \\ \\\frac{429}{13} = 33.$

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3 years ago

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If -2 is the root of the quadratic equation x^2-5x+c=0 <br><br>find the value of c

GaryK [48]

Answer:

c=-x^2+5x

Step-by-step explanation:

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2 years ago

Jack, walker, and trust have $100 altogether. Jack has $20 more than Walker. Trust has $14 more than walker. How much money does

nekit [7.7K]

Answer: Jack has $42

Step-by-step explanation:

Let be "j" the amount of money in dollars that Jack has, "w" the amount of money in dollars that Walker has and "t" the amount of money in dollars that Trust has.

You know that they have $100 altogether, then you can write the following equation:

$j+w+t=100$ [Equation 1]

Jack has $20 more than Walker, then:

$j=w+20$ [Equation 2]

And Trust has $14 more than walker, then you can write this equation:

$t=w+14$ [Equation 3]

Substitute the Equation 2 and the Equation 2 into the first one:

$j+w+t=100\\\\(w+20)+w+(w+14)=100$

Now, solve fo "w":

$w+20+w+w+14=100\\\\3w+34=100\\\\3w=100-34\\\\w=\frac{66}{3}\\\\w=22$

Finally, substiute the value of "w" into the Equation 2 and evaluate:

$j=w+20\\\\j=22+20\\\\j=42$

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3 years ago

In order to start a small business, a student takes out a simple interest loan for $3000.00 for 3 months at a rate of 11.25%.

ikadub [295]

I also do not understand this question. Help please

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3 years ago