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posledela
3 years ago
9

Express the number in decimal notation. 5.2 �� 104 a. 5200 b. 208 c. 520,000 d. 52,000

Mathematics
1 answer:
MakcuM [25]3 years ago
4 0
5.2×10^4=5.2×10000=52×1000=52000
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7y ^3 −7x^3 +4−5+6−3x^3 +6x^3<br>Combine Like Terms
snow_lady [41]

Answer:

-4x^3 + 7y^3 + 5

Step-by-step explanation:

7y^3 - 7x^3 + 4 - 5 + 6 - 3x^3 + 6x^3     Given

7y^3  - 7x^3 - 3x^3 + 6x^3 + 4 - 5 + 6     Rearrange

7y^3 - 4x^3 + 5                                        Combine the like terms

or

-4x^3 + 7y^3 + 5                                       Answer

8 0
3 years ago
The volume of a beack ball is 905 square centimeters. Find the radius of the ball to the nearest whole number.​
lubasha [3.4K]
<h3>given:</h3>

v = 905 \:  {cm}^{3}

<h3>to find:</h3>

the radius of the given ball (sphere).

<h3>solution:</h3>

r =  \sqrt[3]{ \frac{3v}{4\pi} }

r =  \sqrt[3]{ \frac{3 \times 905}{4\pi} }

r = 6 \: cm

<u>therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>radius</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>ball</u><u> </u><u>is</u><u> </u><u>6</u><u> </u><u>cm</u><u>.</u>

note: refer to the picture I added on how you can change r as the subject of the formula.

8 0
1 year ago
Read 2 more answers
Which of the following is a perfect square? <br><br> A. 169<br> B. 154<br> C. 279<br> D. 115
castortr0y [4]
169 = 13²

Answer is A. 169
4 0
2 years ago
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J
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2 years ago
Complete the square than convert to vertex form. y=2x^2+8x-9​
8_murik_8 [283]

y=2x^2+8x-9\\D=b^2-4ac\\D=64-4(2)(-9)\\D=64+72 > 0

There are 2 roots so the only way to complete the square is,

y=2x^2+8x-9\\y=2[(x^2+4x)]-9\\y=2[(x^2+4x+4)-4]-9\\y=2[(x+2)^2-4]-9\\y=2(x+2)^2-8-9\\y=2(x+2)^2-17

Just factor 2 out of 2x^2+8x (just ignore the -9) then find the number that will make the terms be able to complete the square.

then complete the square and multiply 2 inside the brackets.

subtraction as you already get the vertex form and know how to complete the square.

Vertex Form: y=2(x+2)^2-17

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3 years ago
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