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jolli1 [7]
3 years ago
15

Pls pls pls pls help! i need it done fast!! its a timed test, i only have 3 mins left!

Mathematics
2 answers:
NikAS [45]3 years ago
6 0

Answer:

0.130899694

Step-by-step explanation:

erma4kov [3.2K]3 years ago
3 0

Answer:

ok

Step-by-step explanation:

ok and ok

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The difference of the square of a number and 28 is equal to 3 times that number
Pepsi [2]

Answer:

- 4, 7

Step-by-step explanation:

Let the required number be x.

Therefore, according to the given condition:

{x}^{2}  - 28 = 3x \\  {x}^{2}  - 3x - 28 = 0 \\  {x}^{2}  - 7x + 4x - 28 = 0 \\ x(x - 7) + 4(x - 7) = 0 \\ (x - 7)(x + 4) = 0 \\ x - 7 = 0 \: or \: x + 4 = 0 \\ x = 7 \: or \: x =  - 4 \\

5 0
3 years ago
(12. Which of the following is true about the data set {3,5, 5, 7,9}?
liubo4ka [24]

Answer:

A . because on the data set we already have the median then we use range which is max -min

7 0
3 years ago
56" board cut in 2 pieces and one piece is longer than 3 times the ​
Aleksandr [31]

Answer:

Piece one would equal to 14" and piece two would be 42" because 42 is three times the length of 14

8 0
3 years ago
Circle Find the area of the shaded region. Round to the nearest tenth. in²
Goryan [66]

Answer:

3.4

Step-by-step explanation:

its correct i 100% assure you

8 0
3 years ago
The volume of a rectangular prism is (x{3} – 3x{2} + 5x – 3), and the area of its base is (x{2} – 2). If the volume of a rectang
Gemiola [76]

Answer:

x³ - 3x² + 5x - 3 / x² - 2

Step-by-step explanation:

Given in the question,

volume of a rectangular prism = x³ - 3x² + 5x - 3

base area of a rectangular prism = x² - 2

Formula for the volume of prism

V = BA x H

here BA is base area

         H is height

Formula for the height of prism

H = V / BA

plug values in the formula

x³ - 3x² + 5x - 3 / x² - 2

We will do long division

           x - 1

          ----------------------------

x² - 2 | x³ - 3x² + 5x - 3

           x³ - 2x²

           ---------------------------

                 -x² + 5x - 3

                 -x²         + 2

                  ----------------------

                         5x - 5  

The remainder indicates that x³ - 3x² + 5x - 3 is not divisible by x² - 2, and that means that you cannot find the exact height.

6 0
3 years ago
Read 2 more answers
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