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sergey [27]
3 years ago
5

Factor completely 121x^2 - 16.

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0

Assuming you meant the x2 as x squared, then:

(11x+4)(11x-4)

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The area of a base of a cuboid is 45 cm^ , its height is 6 cm find its volume
Evgesh-ka [11]

Answer:

270 cm³

Step-by-step explanation:

hope this helps

5 0
2 years ago
Please help me!!! I will mark.
miv72 [106K]

Answer:

the answer is the first one!

because if x=-3 we know that |x|=|-3|=3

7 0
2 years ago
the length of a rectangle exceeds its width by 6 inches and the area is 40 square inches. What are the length and width of the r
Lorico [155]

Classic Algebra and its unnecessarily complicated sentence structure. As you may have probably known, Algebra has its own "vocabulary set".


"the length of a rectangle exceeds its width by 6 inches" -> length is 6 in. longer than width -> l= w + 6


Since we're solving for the length and width, let's give them each variables.

length = l = w+6

width = w


The next bit of information is "the area is 40 square inches"

Applying the formula for the area of a rectangle we can set up:

l x w = 40

replace "l", or length, with it's alternate value.

(w+6) x w = 40

distribute

w^{2} + 6w = 40

subtract 40 from both sides

w^{2} + 6w - 40 = 0

factor

(w - 4)(w + 10) = 0

solve for w

w= 4, or -10


So great, we have 2 values; which one do we choose? Since this problem is referring to lengths and inches, we will have to choose the positive value. There is not such thing as a negative distance in the real world.


We now have half of the problem solved: width. Now we just need to find the length which we can do but substituting it back into the original alternate value of l.


l = w + 6

w=4

l = 4 + 6 = 10


The length is 10 in. and the width is 4 in. Hope this helps!

8 0
3 years ago
How do i solve this?
Semenov [28]

Answer:

You basically just multiply 2000 by .18 or 18% to get your answer.

For the second part 4000 by .36 or 26% (If you want answer just ask)

7 0
3 years ago
Use natural logrithms to solve 6e^(2x) – 9 = 23
Wittaler [7]
Hello : 
<span> 6e^(2x) – 9 = 23
</span><span> 6e^(2x)  = 32
</span>e^(2x)  = 32/6 =16/3
2x = ln(16/3/
 x = (1/2) ln(16/3)


7 0
3 years ago
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