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Alika [10]
3 years ago
5

5 times a number is 14 less than the square of that number. Find the negative solution.

Mathematics
1 answer:
ryzh [129]3 years ago
4 0
The answer is 7

steps:
7*5=35
7 squared is 49
49-35=14
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60.5/100 if the denominator is 100 and nominator is 60.5 what is percentage?​
leva [86]
The percentage would be 60.5%
4 0
3 years ago
Work out the sizes of each unknown exterior angle in this polygon
goldenfox [79]

Answer:

see explanation

Step-by-step explanation:

The sum of the exterior angles of a polygon = 360°

The exterior angle to interior angle is

exterior angle = 180° - 110° = 70°

Sum the exterior angles and equate to 360

x + 2x + 70 + 2x - 50 + x + 40 = 360 , that is

6x + 60 = 360 ( subtract 60 from both sides )

6x = 300 ( divide both sides by 6 )

x = 50

Then measure of exterior angles is

x = 50°

2x = 2 × 50 = 100°

x + 40 = 50 + 40 = 90°

2x - 50 = 2(50) - 50 = 100 - 50 = 50°

6 0
3 years ago
Find the prime factorazation of 31
lutik1710 [3]

Answer:

31 is a prime number.

How to tell if a number is prime: estimate the square root. In this case, we know the square root of 31 is between 5 and 6 and it isn’t divisible by either of those. If it is divisible by a number higher than it’s square root, the other factor must be lower. Is it divisible by 4 or 2? no, because it isn’t an even number. It’s not divisible by 3, because there’s a remainder of 1 if you try. You’ve eliminated all numbers less than the square root, so it is prime


7 0
4 years ago
Read 2 more answers
Write the complex number in the form a + bi.
bonufazy [111]

Answer:

\frac{3}{2} + \frac{3\sqrt{3} }{2} i

Step-by-step explanation:

Using the exact value

cos60° = \frac{1}{2} and sin60° = \frac{\sqrt{3} }{2}, then

3(cos60° + isin60°)

= 3( \frac{1}{2} + \frac{\sqrt{3} }{2} i) ← distribute by 3

= \frac{3}{2} + \frac{3\sqrt{3} }{2} i ← in the form a + bi

7 0
3 years ago
List all of the two digit numbers that can be made using the digits 5,7,and 8
LuckyWell [14K]

9514 1404 393

Answer:

  57, 58, 75, 78, 85, 87 (no repeats)

  add 55, 77, 88 to the above list if repeats are allowed.

Step-by-step explanation:

With no repeating digits, there are 3 ways to choose the first digit, and 2 ways to choose the second digit, for a total of 3×2 = 6 possible numbers

  57, 58, 75, 78, 85, 87

If the digits can be repeated, than you can add 55, 77, 88 to that list:

  55, 57, 58, 75, 77, 78, 85, 87, 88

3 0
3 years ago
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