Answer:
B
Step-by-step explanation:
When you are solving these kinds of problems, it's always best to start with getting rid of the decimal/fraction.
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We can actually solve for a.
2/3*3=6/3=2
(15+2a=-5)
a=-10
(15+(-20)=-5)
TRUE
a=10 (I think)
\left[y \right] = \left[ \frac{125}{4}\right][y]=[4125] this is answer
Answer:
Irrational. Thats the only one
Step-by-step explanation:
Yvette = 100-7x
Isandro = 0+3x
0+3x = 100 - 7x
0+3x+7x = 100 - 7x +7x
10x = 100
x = 10
So on the 10th time they have the same number, which is 30.
On simplifying the expression 13.8+ (-11.5) , we get 2.3 . And additions
13.8 + (-11.5) and (-13.8) + 11.5 are numbers will same value and opposite sign.
<h3>What are rules for adding a positive and a negative number?</h3>
For adding a negative and a positive number, use the sign of the larger number and subtract.
For example: (–8) + 2 = -6
Given that we have to solve 13.8 + (-11.5) = 13.8-11.5 (we subtract smaller no from larger and will use the sign of lager number that is + here)
13.8+(-11.5) = 13.8-11.5 =2.3
13.8+(-11.5) simply means that 13.8 -11.5 which is subtraction of 11.5 from 13.8
but (-13.8) + 11.5 = -13.8 +11.5 = -( 13.8 -11.5) [taking -1 common from the expression]
Therefore , -13.8 + 11.5 has same value as 13.8- 11.5 but opposite in sign.
Learn, More about addition of numbers from here:'
brainly.com/question/14092461
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