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3 years ago

Pls help asap! to points give plus brainly

Mathematics

2 answers:

mojhsa [17]3 years ago

4 0

Answer:

Step-by-step explanation:Probability = 4/46 = 2/23

(2/23) *100 = 200/23 = 8.69% = 8.7%

soldier1979 [14.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

Probability = 4/46 = 2/23

(2/23) *100 = 200/23 = 8.69% = 8.7%

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3 years ago

What equation shows that 9 is a factor of 72

lana [24]

Answer:

9 x 8 = 72

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3 years ago

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The area of a triangle is comtinous or discrete

Colt1911 [192]

Answer:

Continuous

Step-by-step explanation:

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3 years ago

HELP ME PLEASEEEEE I WILL GIVE THE BRAINLY THING

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3 years ago

Given the equation 5x − 4 = –2(3x + 2), solve for the variable. Explain each step and justify your process.

blagie [28]

A.
$5x-4=-2(3x+2) \ \ \ \ \ \ \ \ \ |\hbox{expand the bracket} \\
5x-4=-2 \times 3x-2 \times 2 \\
5x-4=-6x-4 \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 6x to both sides} \\
11x-4=-4 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 4 to both sides} \\
11x=0 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{divide both sides by 11} \\
x=0$

B.
$3(2x-4)=5x-1 \\
6x-12=5x-1 \\
\boxed{11x-12=-1} \Leftarrow \hbox{the first mistake} \\
11x=11 \\
\boxed{x=11} \Leftarrow \hbox{the second mistake}$

Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.

The correct solution:
$3(2x-4)=5x-1 \ \ \ \ \ \ \ \ \ \ \ |\hbox{expand the bracket} \\
3 \times 2x+3 \times (-4)=5x-1 \\ 6x-12=5x-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{subtract 5x from both sides} \\
x-12=-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 12 to both sides} \\
x=11$

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3 years ago