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3 years ago

11

15. Explain how you can calculate each square

1 answer:

SIZIF [17.4K]3 years ago

5 0

Well perhaps if you know your times tables you would know. However, using a calculator is preferred

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lucy has $25 in her piggy bank. She plans to add $5 per week until she has a total of $75. (Let your variable be x).

lana66690 [7]

Answer:

75=5x+25

Step-by-step explanation:

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4 years ago

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All of the following are false EXCEPT:

Y_Kistochka [10]

O 5(-8) = -40 this is the correct one and the question ask except

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2 years ago

The data set represents the number of rings each person in a room is wearing.

MrRa [10]

If the data set represents the number of rings each person is wearing, being: 0,2,4,0,2,3,2,8,6, the interquartile range of the data is 2. Being, 4 as the Q1, 3 as the Q2 or median, and 6 as the Q3. Where the formula of getting the interquartile range is IQR= Q1-Q2.

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4 years ago

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Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x? 2 plus-or-minus StartRoot 10 EndRoot i 1 plus-or-mi

ioda

Answer:

$x = 1 +/- \frac{i\sqrt{10} }{2}$

Step-by-step explanation:

The equation given is:

$2x^2 = 4x - 7\\\\2x^2 - 4x + 7 = 0$

Using quadratic formula:

$x = \frac{-b +/- \sqrt{b^2 - 4ac} }{2a}$

From the question:

a = 2, b = -4, c = 7

Therefore:

$x = \frac{4 +/- \sqrt{(-4)^2 - 4 * 2 * 7} }{2 * 2}\\\\x = \frac{4 +/- \sqrt{(16 - 56)} }{4}\\\\x = \frac{4 +/- \sqrt{-40} }{4}\\$

=> $x = 1 +/- \frac{i\sqrt{10} }{2}$

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3 years ago

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What is the area of a circle if the circumference is 29

Kruka [31]

Answer:

67 square units

Step-by-step explanation:

Circumference/pi = diameter

29/3.14 = 9.24

Radius = 9.24/2 = 4.62

A = pi * r^2

A = 3.14 * 4.62^2 = 67 square units

8 0

2 years ago