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ioda
3 years ago
5

Explain how you can tell without calculating whether the sum of a positive number and a negative number will be positive, negati

ve, or zero.
Mathematics
2 answers:
xeze [42]3 years ago
8 0
You can answer that based on the absolute value of both numbers. So, if absolute value of the positive number is greater than that of the negative one, you will have a positive result. In the opposite situation, it would turn into a negative result. Finally, if both absolute values are equal, the sum is zero.
viktelen [127]3 years ago
7 0
Once you put it in the calculator it tells you
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Answer:

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Step-by-step explanation:

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3 years ago
Simplify: 26 - 2(7 + 3^2)<br><br> please answer with one of the options below:)
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-6 so option D is the answer
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3 years ago
Enter the value of C when the expression 21.2x+c is equivalent to 5.3(4x-2.6)
likoan [24]
Make the equations equal to each other to find x. 

21.2x+c=5.3(4x-4.6)

Now distribute. 

21.2x+c=21.2x-24.38

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4 0
3 years ago
Read 2 more answers
Current law requires that wheelchair ramps have a height to length ratio of 1:12. An old ramp has a height to length ratio of 2:
crimeas [40]

Answer:

The new ramp must be 54 inches long than the old ramp to meet the requirement of the new law

Step-by-step explanation:

Old height to length ratio is:

h : l =  2 : 15.

Height of old ramp h = 12

Length of old ramp can be find out by putting h  = 12 in the above ratio

\frac{h}{l}  = \frac{2}{15}\\\\h = 12\\\\\frac{12}{l} = \frac{2}{15}\\\\l = 90

Length of old ramp = 90

Height to length ratio by current law:

h : l = 1 : 12

Height will be the same i.e. h = 12

\frac{h}{l}  = \frac{1}{12}\\\\h = 12\\\\\frac{12}{l} = \frac{1}{12}\\\\l = 144

Length of new ramp = 144

How much longer the new ramp should be to meet the new ratio law:

New length - Old length = 144 - 90 = 54 inches

8 0
3 years ago
Please help me with the Question thanks
Lelechka [254]
3/4 equals 21/24....
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3 years ago
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