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joja [24]
3 years ago
5

How many solutions can be found in the linear equation? 3(x+4)=3x+4

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
3(x + 4) = 3x + 4
3x + 12 = 3x + 4
3x - 3x = 4 - 12
0 = -8 (incorrect....no solution)

little tip ...
if it ends with a variable equaling a number, like x = 2 or y = 4, then there is 1 solution.
if it ends with something unequal with no variable, like 0 = -4 or 5 = 7, then there is no solution.
if it ends with something equaling with no variable, like 2 = 2 or 5 = 5, then there is infinite solutions.
prohojiy [21]3 years ago
3 0
Olve equations which require undoing 1 operation1.) x - 6 = -122.) x + 6 = -123.) x/6 = -124.) 6x = -125.) - x = -126.) 5x/6 = -12Solve equations which require undoing 2 operations7.) 3 + 2x = - 18.) 3x + 4(x -1) = 2Solve equations which require undoing many operations, some on each side.9.) 3 + 2x = 4x - 1<span>10.) 4x + 2 - 3x + 5 - 2(x + 5) = (2x - 5) + (3x + 4) Infenete Solution!

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The ratio of boys to girls in the ninth grade is 6:5. If there are 185 girls in the class, how many boys are there?
xeze [42]

Answer:

222 boys

Step-by-step explanation:

Let x = total number of ninth graders. By knowing how many students there are in the grade, we can find for the number of boys.

\frac{5}{6+5}x = 185 (number of girls in ninth grade)

\frac{5}{11}x = 185

x=407

To find for the number of boys, we can use substitution:

\frac{6}{6+5}x = \frac{6}{11}(407)

=222

∴ There are 222 boys in the class.

Hope this helps :)

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2 years ago
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Setler79 [48]
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3 years ago
I will mark you brainlist and give 5 stars! Please help!
mrs_skeptik [129]

Answer:

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Step-by-step explanation:

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3 years ago
Find the value of the expression x3−y3+x2+y2+3 by substituting x=−2 and y=1.
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\\ \sf\dashrightarrow x^3-y^3+x^2+y^2+3

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\\ \sf\dashrightarrow -1

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