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lina2011 [118]
3 years ago
12

Evaluate 15+a for a=-12

Mathematics
1 answer:
olga55 [171]3 years ago
8 0

Answer: 3

Step-by-step explanation:

First Plug it in!!

15+-12 = 3

Always when you add a negative it is basically subtracting!!

Hope this help!!!

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Jack, walker, and trust have $100 altogether. Jack has $20 more than Walker. Trust has $14 more than walker. How much money does
nekit [7.7K]

Answer: Jack has $42

Step-by-step explanation:

Let be "j" the amount of money in dollars that Jack has, "w"  the amount of money in dollars that Walker has and "t"  the amount of money in dollars that Trust has.

You know that they have $100 altogether, then you can write the following equation:

j+w+t=100   [Equation 1]

Jack has $20 more than Walker, then:

j=w+20      [Equation 2]

And  Trust has $14 more than walker, then you can write this equation:

t=w+14      [Equation 3]

Substitute the  Equation 2 and the  Equation 2 into the first one:

j+w+t=100\\\\(w+20)+w+(w+14)=100

Now, solve fo "w":

w+20+w+w+14=100\\\\3w+34=100\\\\3w=100-34\\\\w=\frac{66}{3}\\\\w=22

Finally, substiute the value of "w" into the Equation 2 and evaluate:

j=w+20\\\\j=22+20\\\\j=42

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3 years ago
I need help, please and thank you!
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The answer is c, when he combined 0.96 and 0.75 they are not like terms. The 0.75 has a y attached to it
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Step-by-step explanation:

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Vertical angles and they are congruent.
X+105=100
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