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Ainat [17]
3 years ago
11

30-(-15)-40 I know that it equals 5 but I need a step by step explanation

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
7 0

Answer:

30-(-15)-40

=5

Step-by-step explanation:

You will the subtraction sign to open the bracket

30-(-15)-40

when - and - meet it turns to + (note only happens when opening a bracket)

this is ur result....30+15-40=5

thats how u get your 5

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The complement of angle A is 38 degrees more than angle A
ozzi
I assume that you want the measurement of angle A
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angle A + (38 more than angle a) = are complementary
2A = 52
A = 26

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3 years ago
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(b) The force, F, between two objects is inversely proportional to the square of the distance, d, between
LiRa [457]

Answer:

F is reduced by 31%

Step-by-step explanation:

F = 1/(d²)

now, we increase the distance by 20% (multiply by 1.2).

F new = 1/(1.2×d)² = 1/(1.44×d²) = (1/1.44) × (1/(d²)) =

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6 0
3 years ago
Which number is a solution of the inequality 8 - 1/4 b > 27
Brrunno [24]

The inequality is 8-1/4x>27. The solution of the inequality is b<-76.

Given that,

The inequality is 8-1/4x>27

We must determine how to address the inequity.

Take,

8-1/4x>27

Multiply the inequality's two sides by its lowest common denominator,

4×8-4×1/4b>27×4

Reduce the expression to the lowers term,

4×8-b>4×27

Calculate the product or quotient,

32-b>4×27

Calculate the product or quotient,

32-b>108

Rearrange unknown terms to the left side of the equation,

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Calculate the sum or difference,

-b>76

Divide the inequality's two sides by the variable's coefficient,

b<-76

Therefore, the solution of the inequality is b<-76.

To learn more about inequality visit: brainly.com/question/28823603

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6 0
1 year ago
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erma4kov [3.2K]

Answer:

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Step-by-step explanation:

When there is a number in the brackets, we want to input that into our function and get the output. In other words, we simply substitute 7 for x

2(7) = 14

3 0
3 years ago
Can someone please help me I really need help please help me thank you
just olya [345]

Answer:

1800 or D.

Step-by-step explanation:

Ill post a link an article that can help you master this, I found it very useful. Tell me if you need help after reading it

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4 years ago
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