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jarptica [38.1K]
2 years ago
7

Add.

Mathematics
1 answer:
Sidana [21]2 years ago
8 0

Answer:

1\frac{7}{20}

Step-by-step explanation:

1. Convert the mixed number to an improper fraction to match the rest of the problem (this just makes it easier for now, the answer will still be a mixed number)

-1\frac{4}{5} becomes \frac{9}{5}

2. Re-write the new equation. When there is a "+" in front of a set of parentheses the expression doesn't change aside from removing the plus signs.

The new equation becomes

\frac{9}{5} - \frac{1}{4} -\frac{1}{5}

3. Calculate. Just work out the new expression.

The answer is \frac{27}{20}

4. Convert to a simplified mixed decimal.

27 goes into 20 once with seven left over, making the answer 1\frac{7}{20}

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Any idea ? I need help
trasher [3.6K]
Use the Pythagorean Theorem:
a^2 + b^2= c^2

a= one side= 68 mi
b= second side= 80 mi
c= hypotenuse= Greenville to Columbia mi


a^2 + b^2= c^2

68^2 + 80^2= c^2
square each number

4,624 + 6,400= c^2

11,024= c^2
take square root of both sides

104.995 mi= c


ANSWER: The distance from Greenville to Columbia is 104.995 miles (rounded to 105 miles).

Hope this helps! :)
3 0
3 years ago
Read 2 more answers
How do you solve 3(x-10)= -6 ?
Andrei [34K]

Answer:

x=8

Step-by-step explanation:

3(x-10)=-6

3x-30=-6

3x=24

x=8

6 0
3 years ago
Read 2 more answers
23 ones x 2 tens= answer
Kaylis [27]
The answer is 460
1. 23 ones is the same as 23
2. 2 tens is the same as 20
3. 23 ones x 2 tens is the same as       23
                                                            x20
                                                        ________
 


Hope you get it and hope i helped!
Buh-Bye
3 0
3 years ago
Read 2 more answers
How do you find the arctan 4/3 ? (Without a calculator)
Soloha48 [4]
If arctan 4/3 = the tangent of that angle will be 4/3 , opposite 4 over adjacent 3

Now, you only have to take the sin of that angle it's opposite 4 over hypotenuse 5. 

You will get that the answer is 4/5

hope this helps



7 0
3 years ago
Which expression has a value of 12?<br> A. 3+32<br> B. 32 +23<br> C. (4+2)2<br> D. 42-32
alekssr [168]
The answer is C because if you multiply 4 and 2 by 2 it would become 8 and 4, 8+4=12
4 0
3 years ago
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