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Daniel [21]
3 years ago
15

Which product is equivalent to 25x2 – 16?

Mathematics
2 answers:
Gekata [30.6K]3 years ago
8 0
The answer is (5x-4)(5x+4) 
mixer [17]3 years ago
4 0
The answer is A;
(5x-4)(5x+4)
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At a baseball game, a vender sold a combined total of 104 sodas and hot dogs. the number of sodas sold was three times the numbe
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You have to set up a system of equations

x+y=104
3x-y=104

Sodas = 78
Hotdogs = 26
7 0
3 years ago
Factor completely. ay^2 + 2ay - 3a
coldgirl [10]
Ay^2+2ay-3a
a(y^2+2y-3)
a(y-1)(y+3)

8 0
3 years ago
Find the value of x if a linear function goes through the following points and has the following slope: (x,2), (-4,6), m=3
Anastasy [175]

The slope is defined as

m=\dfrac{\Delta y}{\Delta x}=\dfrac{6-2}{-4-x}

So, we have the follwing equation:

\dfrac{6-2}{-4-x} = 3 \iff 4 = 3(-4-x) \\\iff 4=-12-3x \iff16=-3x \iff x = -\dfrac{16}{3}

6 0
3 years ago
Read 2 more answers
A geologist in South America discovers a
diamong [38]

Answer:

This is a radioactive decay / half-life problem.

Initial amount of C 14 = 100% Present Amount = 57%

k = .0001  (that value should be negative)

Nt = No * e^ (k*t)

You need to solve that equation for "time" (equation attached)

time = natural log (Ending amount / Starting Amount) / k

time = natural log (57% / 100%) / -.0001

time = ln (.57) / -.0001

time = -.56211891815 / -.0001

time = 5,621.2 years    (age of the bird skeleton)

These problems are quite complicated but I think I know this pretty well.

Need to know more? Visit my website (it's on the graphic).

Step-by-step explanation:

7 0
3 years ago
You and a friend want to know how much rope you need to climb a large rock. your friend is 5.5 feet tall and casts a shadow that
Neko [114]
The concept useful in finding the answer to this item is ratio and proportion, the ratio of the height of your friend with the shadow casted should be proportional to the height of the rock with the length of the shadow it cast. That is,
                       5.5 ft / 18 ft = x ft/ 209.5 ft
The value of x from the equation above is 64 ft. 
4 0
3 years ago
Read 2 more answers
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