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irinina [24]
2 years ago
5

Factor the following. ( Correct and best explained answer gets brainliest :)

Mathematics
1 answer:
Fittoniya [83]2 years ago
4 0
The answer is (x - 10)(x - 9).

Alright, so here is my thought process as I factored this out. 

The middle number, or second term, is the sum of the numbers within the parentheses after you factor. In this case, we had to get to -19.

Now, to figure out which two number are gonna add up to that, you need to figure out the factors of the last number in the equation, which is the constant. In this case, multiple choice tells us that 10 and 9 have got to be the factors of 90 we're looking for. 

Now, back to the first step. We have the numbers 10, 9, and -19. The only way to make 10 and 9 add up to -19 is by making 10 and 9 both negative. So -9 and - 10. 

Finally, you add the x's and the parentheses to make the lovely factored version of the equation: (x - 10)(x - 9)! :)
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12 spheres of the same size are made from melting a solid cylinder of 1 cm diameter and 2 cm height. Find the diameter of each s
mars1129 [50]

The answer is: The diameter is 4 centimeters.

The explanation  is shown below:

1. The volume of the cylinder is:

Vc=r^{2}h \pi

Where r is the radius (r=\frac{16cm}{2}=8cm) and h is the height (h=2cm).

Then:

Vc=(8cm)^{2}}(2cm)\pi\\Vc=128\pi

2. The total volume of the 12 spheres is:

Vs=12(\frac{4}{3}r^{3}\pi)\\Vs=16r^{3}\pi

3. The volume of the cylinder and the total volume of all the 12 spheres, are equal, therefore:

Vc=Vs\\128\pi=16r^{3}\pi

4. Now, you must solve for the radius:

r=\sqrt[3]{\frac{128\pi}{16\pi}}\\r=2cm

5. The diameter is:

d=2r\\d=2(2cm)\\d=4cm

5 0
3 years ago
Plz help what is 8 t.=_______lb.?
larisa86 [58]

Answer:

16,000 lb.

Step-by-step explanation:

For every ton, it equals 2,000 pounds. So to find how many pounds is in 8 tons, just multiply 2,000 by 8. This would give you 16,000 pounds!

This is of course using the U.S. tons, so if you want to convert it for metric tons it would be 17,632 since 1 metric ton = 2204.

I hope this was able to help!

7 0
2 years ago
Is diameter and radius the same thing
fredd [130]

radius* 2=diameter so no diameter and radius aren't the same thing because radius is half the distance across the circle and diameter is the full distance across the circle.
8 0
2 years ago
Read 2 more answers
Need help i dont understand this.
inn [45]
The range is a statistical property that consists of the difference between the biggest and the smallest given number.

In our case, the biggest is 17.3 million and the smallest is 3.3 million:

17.3 - 3.3 = 14.0


The range is 14.0 million acres (option D, 4th option).


Hope it helped,

Happy homework/ study/ exam!
6 0
3 years ago
Read 2 more answers
Rafael and his sister bought snacks for movie night.
kolbaska11 [484]

Answer:

Each boxed candies are 5.98, and Each bag of chips are 6.99 Sorry if incorrect

3 0
2 years ago
Read 2 more answers
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