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Lady_Fox
5 days ago
8

Fill in missing information to make the equality true: (... +2a)2 = … +12ab2+4a2.

Mathematics
2 answers:
tester [8.8K]5 days ago
3 0

Answer:

It seems to me that it ought to be

6b² and (6b²)²

or

6b² and 36b^{4}

Step-by-step explanation:

(a+b)² = a² + 2ab + b²

thus

(6b²+2a)² = (6b²)² + 12ab² + 4a²

Zina [9.1K]5 days ago
3 0

Answer:

I guess the answer should be

6b² and (6b²)²

or

6b² and 36b^{4}

Step-by-step explanation

(a+b)² = a² + 2ab + b²

thus

(6b²+2a)² = (6b²)² + 12ab² + 4a²

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20 POINTS Compost costs $10 per cubic yard and topsoil costs $2 per cubic yard. Maria needs more than 10 cubic feet of topsoil.
Inessa [9000]
I can't view the graph, but let’s apply reasoning
hmm, since it requires more than 10 cubic feet of topsoil, the first and second options aren’t feasible

let’s analyze the costs
third option
10*1=10
2*12=24
10+24=34 and 34<50, that works

fourth option
3*10=30
2*12=24
30+24=54
54>50, that's too high


the answer is the third one
the one with 1 cubic yard of compost and 12 cubic yards of topsoil
8 0
11 days ago
Read 2 more answers
Triangle abc above is isosceles with an=ac and bc=48. The ratio of de to de is 5:7 . What is the length of dc
PIT_PIT [9117]

Answer:

The diagram displaying triangle ABC and the relevant statement along with the answer options is attached.

According to this, the answer is: The length of DC is 28.

Explanation:

From the diagram and the data that segment AB equals segment AC, you comprehend that angles B and C of the isosceles triangle ABC are congruent.

Triangles BED and CFD possess two sets of congruent angles (angle B is congruent to angle D, and angles BED and DFC are congruent), indicating that triangles BED and CFD are similar.

This similarity leads to the proportional relationship:

  • DE / DF = DB / DC

Given that the ratio of DE to DF is 5:7, we have:

  • 5/7 = DB / DC

Also, it is stated that segment BC is 48.

From the figure:

  • BC = DB + DC = 48.

This results in two equations:

  • 5/7 = DB / DC

  • DB + DC = 48.

Now, we define DC = x, which implies DB = 48 - x, leading to the equation:

  • 5 / 7 = (48 - x) / x

Solve this:

  • 5x = 7 (48 - x)... [multiplication property: multiply by x and 7]

  • 5x = 336 - 7x... [distributive property]

  • 12x = 336... [addition property: add 7x to both sides]

  • x = 336 / 12... [division property: divide by 12]

  • x = 28... [simplification]

Therefore, the length of segment x = DC = 28.

6 0
16 days ago
a school librarian ordered new books for the library. 1/3 are science 2/5 are biography and the rest of the books are fiction. W
tester [8842]

I believe it would be 4/15 since science books are 6/15 and fiction accounts for 5/15

While I don't require it, a brainliest would be greatly appreciated

4 0
21 day ago
Read 2 more answers
tions - Part 1 A relation is plotted as a linear function on the coordinate plane starting at point E (0, 27)(0, 27) and ending
PIT_PIT [9117]
We are given the points
<span>E (0, 27)
</span><span>F (5,−8)

and we need to calculate the rate of change and the initial value:

To determine the rate of change, we will apply the slope formula:
m = (-8 - 27) / (5 - 0) = -7
Thus, the rate of change is -7

The initial value refers to the y-coordinate when x equals 0, which corresponds to point E. Therefore, the initial value is 27.</span>
4 0
14 days ago
Read 2 more answers
A ship sails at 15 miles per hour, while it can motor at 5 miles per hour. It sails for 6 hours to its destination but has to mo
tester [8842]

Greetings!

The conclusion is:

The return trip will take 18 hours.

Reasoning:

To determine the duration of the return journey, we must calculate the distance from the destination back to the starting point.

The ship travels at 15 miles per hour (mph) over 6 hours, yielding a distance of:

x=x_o+v*t\\\\x=0+15mph*6hours=90miles

The distance from the starting point to the destination is 90 miles, and for the return trip, the motor operates at a speed of 5 mph. Thus, computing the time taken gives us:

Distance=v*t\\\\t=\frac{Distance}{v}=\frac{90miles}{5mph}=18hours

Consequently, the return trip will take 18 hours to complete.

Have a nice day!

5 0
3 days ago
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