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Fofino [41]
2 years ago
8

Factor completely 3x ^2 + 2xy - y ^2

Mathematics
2 answers:
ki77a [65]2 years ago
7 0

Answer:

(3x-y)(x+y)

hope this helps

NemiM [27]2 years ago
5 0

3x2+2xy−y2

=(3x−y)(x+y)

Answer:

(3x−y)(x+y)

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In 2013 number of students in a small school is 284.it is estimated that student population will increase by 4 percent
BaLLatris [955]

The situation can be modeled by a geometric sequence with an initial term of 284. The student population will be 104% of the prior year, so the common ratio is 1.04.

Let \displaystyle PP be the student population and \displaystyle nn be the number of years after 2013. Using the explicit formula for a geometric sequence we get

{P}_{n} =284\cdot {1.04}^{n}P

n

=284⋅1.04

n

We can find the number of years since 2013 by subtracting.

\displaystyle 2020 - 2013=72020−2013=7

We are looking for the population after 7 years. We can substitute 7 for \displaystyle nn to estimate the population in 2020.

\displaystyle {P}_{7}=284\cdot {1.04}^{7}\approx 374P

7

=284⋅1.04

7

≈374

The student population will be about 374 in 2020.

5 0
2 years ago
Please help!! what is the area?
7nadin3 [17]
I think its 61.64 im not 100% sure but I hope this helps
6 0
3 years ago
Read 2 more answers
In the figure, BC is a support for the roof<br> of a garage. What is the length of BC?
Sonbull [250]

Answer:

Bc = √63 ft

Step-by-step explanation:

Here, we want to get the length of BC

As we can see, there is a right angled triangle ABC, with 12ft being the hypotenuse and 9 ft the other side

So we want to get the third leg which is BC

we can use the Pythagoras’ theorem here

And that states that the square of the hypotenuse equals the sum of the squares of the two other sides

let the missing length be x

12^2 = x^2 + 9^2

144 = x^2 + 81

x^2 = 144-81

x^2 = 63

x = √63 ft

4 0
2 years ago
Please help me solve this equation
elena-s [515]

Answer:

m<U = 38degrees

Step-by-step explanation:

From the given diagram, <B = <U since both triangles are similar, hence;

Hence;

2y+2 = 3y-16

2y - 3y = -16 - 2

-y = -18

y = 18

Get m<U

m<U = 3y-16

m<U = 3(18) -16

m<U = 54 - 16

m<U = 38degrees

3 0
2 years ago
How would you convert 93/20 to a decimal?
anastassius [24]
In order for you to find the decimal for this problem you would have to divide both of  the numbers from each other.

So for this problem you have to 

Problem → \frac{93}{20}

Write them out  → 93 ÷ 20 

Answer → 4.65

So, that means that your answer is 4.65


4 0
2 years ago
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