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a_sh-v [17]
2 years ago
7

(4x^2+3x −5)+(x^2 −7x+10)

Mathematics
2 answers:
olga nikolaevna [1]2 years ago
8 0

Answer:

5x^{2}  -4x +5

Step-by-step explanation:

umka2103 [35]2 years ago
6 0
Jwywwusuwuhsjwiwiwiwiwjnexbdnjsjsjejjeje
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6th grade help please
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12 + 6x + 6x + 6y = 12 + 12x + 6y
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2 years ago
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7,210 books in a library are organized into 3 rooms. there are 1,960 more books in the first room than in the second room. the n
Free_Kalibri [48]

Answer:

750 books

Step-by-step explanation:

Let there be "x" number of books in the 3rd room

Now,

2nd room has 3 times as 3rd room, so we can write:

Second Room = 3x

Also, there are 1960 MORE books in 1st room than 2nd room, so we can write:

First Room = 3x + 1960

In total there are 7210 books in all three rooms, thus we can write:

First Room + Second Room + Third Room = 7210

Now, replacing the first 2 equations in this, we get:

3x + 1960 + 3x + x = 7210

Solving for x:

3x + 1960 + 3x + x = 7210\\7x=7210-1960\\7x=5250\\x=\frac{5250}{7}\\x=750

"x" is indeed what we are looking for. Thus,

There are 750 books in the third room

7 0
3 years ago
What is the measure of L
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If j is 52° and its a right angle, add 90° and 52°. Then subtract 180° from that answer. Because all triangles add up to 180°.
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2 years ago
Ms. Tyson is doing an engineering challenge with her students. Each team will get a kit with bags of marshmallows and boxes of t
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Step-by-step explanation:

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3 years ago
If the shaded cross sections of the solids have the same area, which of the following corresponds to the value of a: the side le
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Answer:

4\sqrt{\pi}

Step-by-step explanation:

  • The cross section of a sphere is a circle with area  \pi r^2, where radius is given as 4
  • The cross section of the cube is a square with area  a^2, where a is side length of square

The circle area = the square area. Thus we have:

\pi r^2 = a^2 \\\pi(4)^2=a^2\\16\pi=a^2\\\sqrt{16\pi}=a\\ a=\sqrt{16} \sqrt{\pi} \\a=4\sqrt{\pi}

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3 years ago
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