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andre [41]
3 years ago
8

Suppose you want to factor the expression x2+ 2xn+n2. Given that n> 0, what are the factors? Explain.

Mathematics
2 answers:
cestrela7 [59]3 years ago
4 0

Answer:

\left(x+n\right)^2=(x+n)(x+n)

Step-by-step explanation:

\:x^2+\:2xn+n^2

\mathrm{Perfect\:Square\:Formula}:\quad \left(a+b\right)^2=a^2+2ab+b^2

\left(x+n\right)^2=(x+n)(x+n)

spin [16.1K]3 years ago
3 0

Answer:

(x + n)^2

Step-by-step explanation:

Okay! Let's get this going!

(x + n ) ^2 is correct because first we get

x^2 and n^2. Yet we need to add one more part to this to make it true which is x * n. We multiply this by two since according to the formula (a + b)^2 = a^2 + 2ab + b^2

:)

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Statistics would not be useful if they were not presented with 100% certainty. T/F
ExtremeBDS [4]

Answer: False

Nothing is 100% certain no matter how sure it seems. This is especially true with statistics. There's always going to be some amount of error. The goal is to minimize the error as much as possible in the best cost-effective manner.

7 0
3 years ago
What would -9 1/2 be as a decimal?
Kamila [148]
-9.5 because 1/2 simplifies to .5 and 9 is the whole number 
3 0
3 years ago
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This diagram of a rectangular city park was drawn using a scale of 1 centimeter to 20 meters
I am Lyosha [343]

Answer:

Scale factor for the drawing from actual park = \frac{1}{20}

Area of the actual park = 1200 cm²

Step-by-step explanation:

Length of the rectangular city park = 5 cm

Width of the rectangular park = 6 cm

Using scale factor 1 cm = 20 meters

Scale factor = \frac{\text{length of the park in drawing}}{\text{Actual length of park}}=\frac{1}{20}

\frac{5}{\text{Actual length of park}}=\frac{1}{20}

Actual length = 5 × 20 = 100 meters

Actual width = 6 × 20 = 120 meters

Area of the rectangular park = length × width

                                               = 100 × 120

                                               = 1200 square meters

Therefore, Scale factor from actual length to the length in drawing = 1 : 20

Area of the rectangular park = 1200 square feet

7 0
3 years ago
Rolando is 17. In four years, his age will be 3/2 the age of his sister Marisa. How old will Marisa be in three years
Bess [88]
To find the answer, we can first find the age of Rolando in four year:

17+4
=21

We can then proceed to find the current age of Marisa,which is 3/2 of Rolando’s age calculated above:

Let Marisa’s age be y.

3/2 y =21
y = 21 × 2/3
y = 42/3
y = 14

Therefore Marisa is currently 14 years old.

In three years, Marisa would be:

14+3
=17

Therefore, she will be 17 years old.

Hope it helps!
5 0
3 years ago
The square root of 49 is how much less than four squared
Paul [167]
The answer is 9
sqrt(49) = 7
4^2 = 16
16-7 = 9
5 0
3 years ago
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