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3 years ago

5xsquared plus 3x plus 4

Mathematics

1 answer:

GalinKa [24]3 years ago

6 0

5(x- (-3+√71i)/10) (x- (-3 - √71i)/10)

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Please help me!! (Look at the photo)

maw [93]

Answer:

310in

Step-by-step explanation:

7×10=70

70×2=140(there are two that are the same length)

5×10=50

50×2=100(there are two that are the same length)

5×7=35

35×2=70(there are two that are the same length)

70+100=170

170+140=310

please let me know if it's correct

4 0

3 years ago

help me pls im desperate! A rectangle has a perimeter of 20 units, an area of 24 square units, and sides that are either horizon

valentinak56 [21]

Answer:

Step-by-step explanation:

I took an educated guess, I remember doing this.

4 0

2 years ago

Read 2 more answers

consider the following equation x+4/x-6+3/2x+5=7 What are the constraints on x? Select all that apply.

kirill115 [55]

Don’t really pay attention to the x .

4 0

3 years ago

20 points answer if you know the answer!!!

ivolga24 [154]

Pretty sure its D. you need to divide 60.5 by 69

8 0

3 years ago

Read 2 more answers

You have $7000 with which to build a rectangular enclosure with fencing. The fencing material costs $30 per meter. You also want

Arlecino [84]

Answer:

1857.12 square meters

Step-by-step explanation:

Let L be the length of the rectangle and 'W' be the width

Perimeter = $2L + 2W + 2W$

The fencing material costs $30 per meter.

The material for the partitions costs $25 per meter

$cost=30(2L + 2W) +25( 2W)\\60L+60W+50W\\60L +110W$

$7000=60L+110W$

Solve for L

$7000=60L+110W\\7000-110W= 60L\\L=\frac{700}{6} -\frac{11}{6} W$

Area = length times width

$( \frac{700}{6} -\frac{11}{6} W)(W)\\A(W)=\frac{700}{6}W -\frac{11}{6} W^2$

Now take derivative and set it =0

$A(W)=\frac{700}{6}W -\frac{11}{6} W^2\\A'(W)=\frac{700}{6} -\frac{22}{6} W$

set the derivative =0 and solve for W

$0=\frac{700}{6} -\frac{22}{6} W\\\frac{700}{6}=\frac{22}{6} W\\W= 31.8$

So width = 31.8 that gives maximum area

$L=\frac{700}{6} -\frac{11}{6} (31.8)=58.4$

$Area = length \cdot width = 31.8 \cdot 58.4= 1857.12$ square meter

4 0

3 years ago