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AdoNice
28.12.2019 •
Mathematics
How many solutions does the
equation have?
3(7/3 + 4/3) - 2x + 8 = 5x + 12
Solved
Show answers
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Ответ:
It only has one solution.
Step-by-step explanation:
Let's solve your equation step-by-step.
3( 7 /3 + 4 /3 )−2x+8=5x+12
Step 1: Simplify both sides of the equation.
3( 7 /3 + 4 /3 )−2x+8=5x+12
11+−2x+8=5x+12
(−2x)+(11+8)=5x+12(Combine Like Terms)
−2x+19=5x+12
−2x+19=5x+12
Step 2: Subtract 5x from both sides.
−2x+19−5x=5x+12−5x
−7x+19=12
Step 3: Subtract 19 from both sides.
−7x+19−19=12−19
−7x=−7
Step 4: Divide both sides by -7.
−7x /−7 = −7 /−7
x=1
x=1
Ответ:
D
Step-by-step explanation:
y=-x-4
First, we can match the graphs with the y-intercept of -4 given from the equation.
Only graphs C and D crosses the y-axis at -4.
The slope from the equation is -1.
If the slope is a negative number, the line should be negative as well, meaning the line should be going downwards (left to right always)
Out of graphs C and D, only graph D has a line going downwards and a y-intercept of -4.
Hope I was able to help! Good Luck!