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Ulleksa [173]
3 years ago
13

The area of a rectangle is represented by the expression2x^2+14x+20 Bill claims that this rectangle could have either the dimens

ions (2x+4) and (x+5) or the dimnesions of (2x+10) and (x+2). do you agree or disagree ? justify your opinion
Mathematics
1 answer:
bija089 [108]3 years ago
4 0
I agree. Both of the equations come out to 2x^2+14x+20

(2x+10)(x+2)

Use the FOIL method

2x^2+4x+10x+20

Combine like terms

2x^2+14x+20


(2x+4)(x+5)

Use the FOIL method

2x^2+10x+4x+20

Combine like terms

2x^2+14x+20

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A deposit of 4,000 at 6.5% for 270 days
atroni [7]
Some institutions use 360 days a year (because then they charge more interest than 365 days).

Assuming the 360 days a year rule, the the daily rate is
6.5% for a year, or 270/360*6.5% for 270 days.
The future amount is then
4000*(1+0.065*270/360)
=$4195  (simple interest).

5 0
4 years ago
Kathy decides to start a new exercise routine for 5 days. Every day, she runs for some number of minutes. She also swims for 15
Alex73 [517]

Answer:

I have no idea I just want points

Step-by-step explanation:

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7 0
3 years ago
Ques
krek1111 [17]

Answer:

$1.68

Step-by-step explanation:

15.28 x .11=1.68

6 0
3 years ago
Solve for X<br> 1. -5 = x - (-6)<br> 2. - 30=1.25x<br> 3. -6x=72<br> 4. -4.9=0.7x<br> 5. 3.15=0.45x
Hoochie [10]

Answer: 1. -11=x 2. 24=x 3. x=-12 4. -7 5. x=7


Step-by-step explanation: The answer to first one can be calculated by seeing the - as a -1.

-5 = x - (-6)

-5=x+6

Then subtract 6 from both sides.

-5=x+6

-11=x

The answer to the second can be found simply by dividing both sides by 1.25.

- 30=1.25x

-30/1.25=1.25x/1.25

24=x

The third one can be solved by as we said before dividing both sides by -6.

-6x=72

-6x/-6=72/-6

x=-12

The fourth one can be found again by using division on both sides.

-4.9=0.7x

-4.9/0.7=0.7x/0.7

-7=x

Finally we solve the last one by again doing the same thing dividing both sides by 0.45.

3.15=0.45x

3.15/0.45=0.45x/0.45

7=x

Hope this helps!

3 0
4 years ago
The table shows a proportional relationship between the number of pounds of bananas purchased and the total cost of bananas.
Liula [17]

Answer:

Choice A, C and E

Step-by-step explanation:

<em>Your table is poorly presented</em>

Given

x      y

\begin{array}{cc} {3} & {1.47} \ \\ {5} & {2.45} \ \\ {9} & {4.41} \ \ \end{array}

First, we calculate the constant of proportionality (k)

k = \frac{y}{x}

For (3,1.47)

k = \frac{1.47}{3}

k = 0.49

For (5,2.45)

k = \frac{2.45}{5}

k = 0.49

For (9,4.41)

k = \frac{4.41}{9}

k = 0.49

From the above calculations, the constant of proportionality is 0.49.

So, the usable rows must also have 0.49 as their constant of proportionality

<u>Choice A</u>

(x,y) = (2,0.98)

k = \frac{0.98}{2}

k = 0.49 --- <em>This is usable</em>

<em />

<u>Choice B</u>

(x,y) = (7,4.45)

k = \frac{4.45}{7}

k = 0.64 --- <em>This is not usable</em>

<em />

<u>Choice C</u>

(x,y) = (6,2.94)

k = \frac{2.94}{6}

k = 0.49 --- <em>This is usable</em>

<em />

<u>Choice D</u>

(x,y) = (1,0.54)

k = \frac{0.54}{1}

k = 0.54 ---- <em>This is not usable</em>

<em />

<u>Choice E</u>

(x,y) = (8,3.92)

k = \frac{3.92}{8}

k = 0.49 --- <em>This is usable</em>

5 0
3 years ago
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