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swat32
3 years ago
11

Help, please!!!!!!!!!!!!!!! i will GIVE 40 POINTS!!!!!!!! DO all of them!!!!!!!!!!!!!!

Mathematics
2 answers:
andre [41]3 years ago
5 0
The answer for the first one .

Arlecino [84]3 years ago
4 0

1-a)54.82,b)638.4522,c)12.7265, d)22.436,e)20595.6246
2-a)90.06,b)11.44,c)0.8104,d)417.315,
e)2799.7598,f)3.985238095,g)7.05, h)4252.48
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You have 132 m of fencing with which to make 2 side by side rectangular enclosures against an existing wall. If the enclosures a
Deffense [45]
The two enclosures will need three equal fences coming out from the wall and meeting another fence running parallel to the wall. If the fences coming out from the wall are x metres long the parallel fence will be (132 - 3x) metres long.
The area A = x(132 - 3x) = 132x - 3x^2
The derivative of A = zero when 132 - 6x = 0 which means the maximum area is when x = 22m
The maximum area = 22 x (132 - 3 x 22) = 1452 m^2

If you don’t know how to find derivatives then you could sketch the graph of y = x(132 - 3x).
This is an inverted parabola (hill) with x intercepts at 0 and 132/3 = 44.
The maximum point (top of the hill) is halfway between 0 and 44 I.e. 22m

Try any other value for x and the area will be smaller.
8 0
2 years ago
Which of the binomials below is a factor of this trinomial?<br> 4x2 + 21x + 5
guapka [62]

Answer:

B.  4x + 1

Step-by-step explanation:

4x^2 + 21x + 5

= (4x + 1)(x + 5)

Factors of this trinomial are (4x + 1) and (x + 5)

Answer

(4x + 1)

8 0
3 years ago
Solve the equation x/5 =9
Elena L [17]

Answer:

x = 45

Step-by-step explanation:

Given

\frac{x}{5} = 9

Multiply both sides by 5

x = 5 × 9 = 45

7 0
3 years ago
Read 2 more answers
Simplify (write without absolute value sign): |x+3|, if x&gt;2
Bas_tet [7]

Answer:

5

Step-by-step explanation:

Substitute 2 in for x

|2+3| = 5

This would take the absolute value of the answer, or in other words once you solve the equation it will remove any negatives to return a positive number. I took the test and I have links to prove it.

3 0
3 years ago
Please I need this ASAP will give you the Brainiest answer.
k0ka [10]

Answer:

D

Step-by-step explanation:

5 0
2 years ago
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