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Ksenya-84 [330]
3 years ago
13

What is the value of 5+-12=

Mathematics
1 answer:
vitfil [10]3 years ago
6 0

Answer:

It would be -7

Step-by-step explanation:

The 12 is negative, so instead of adding, you would subtract 5.

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After 2 days, the Johnsons had used
salantis [7]

Answer:

11.5 tanks of gas

Step-by-step explanation:

23/2

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3 years ago
What is the solution to the system of equations below?<br>2x+3y = 17<br>3x+6y= 30​
brilliants [131]

Answer:

<h2>x = 4, y = 3 → (4, 3)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}2x+3y=17&\text{multiply both sides by (-2)}\\3x+6y=30\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-4x-6y=-34\\3x+6y=30\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-x=-4\qquad\text{change the signs}\\.\qquad x=4\\\\\text{put the value of x to the first equation:}\\\\2(4)+3y=17\\8+3y=17\qquad\text{subtract 8 from both sides}\\3y=9\qquad\text{divide both sides by 3}\\y=3

5 0
2 years ago
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Which of the following shows the prime factorization of 72 using exponential notation?
Luba_88 [7]

Answer:

2^3 .3^2

Step-by-step explanation:

if 2×2×2 = 8

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6 0
3 years ago
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How to show the work for 163-66
ArbitrLikvidat [17]
Put 163 on top and then 66 on bottoms of the equation and then subtract. 3-6 u can't do so u barrow from the 6 and turn the 6 into a 5 and the 3 into a 13 then subtract 13 from 6 and get 7 then u can't subtract 5 from 6 so barrow from the 1 to make the 5 a 15 and the 1 to a 0 and then subtract 15 from 6 and get 9 and ur answer is 97!
4 0
3 years ago
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When you would not need to use the quadratic formula
sergiy2304 [10]

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Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.

3 0
3 years ago
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