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bonufazy [111]
3 years ago
6

Evaluate the following, expressing your answer as a decimal: 3/8 - -0.2

Mathematics
1 answer:
lozanna [386]3 years ago
8 0

Answer:

0.575

Step-by-step explanation:

I divided 3÷8 and got 0.375 to get the decimal of the fraction. Then since there is a subtraction and negative sign they cancel out to a positive where I added the 0.2 to 0.375 and got that as my answer.

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The smallest angle of rotational symmetry for a regular polygon is 30°. How many sides does the regular polygon have?
Nady [450]
The answer should be 12
6 0
3 years ago
Read 2 more answers
This is confusing someone help please
Marat540 [252]

Answer:

Below in BOLD.

Step-by-step explanation:

5x^2 - 6x - 2 = 0

Quadratic formula for ax^2 + bx + c = 0  is

x =  [-b ± √(b^2 - 4ac)]/ 2a    

Here we have a = 5, b = -6 and c = -2

so x =  [-(-6)  ± √((-6)^2 - 4*5*-2)]/ 2*5

=  [ 6 ± √(36 + 40)] / 10

= 0.6 ±  √76 / 10

= 0.6 ±  0.8718

= 1.4718,  -0.2718

= 1.5, -0.3 to one decimal place.

x^2 + 3x = 40

x^2 + 3x - 40 = 0

We can factor this one:

(x - 5)(x + 8) = 0

x - 5 = 0 giving x = 5 and

x + 8 = 0 giving x = -8.

Answer  x = -8, 5.

4 0
2 years ago
14. Find a solution to the inequality x &gt; 6. 2 11 6 4 <br><br> help pls
stellarik [79]

Answer:

x = 11

Step-by-step explanation:

Given x > 6

This tells us that the only value that makes the inequality true is any value of x that is larger than 6

From the list 11 is the only value larger than 6, thus x = 11

11 > 6 ← is a true statement

3 0
3 years ago
Which of these are rational numbers?
Tom [10]

Answer:

1. 3\2

2.\sqrt{11}

3.-13

3 0
3 years ago
I also need help with this please help
Sindrei [870]

Answer:

2.5 divided by circumfrence x radius

\

Step-by-step explanation:

3 0
3 years ago
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