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2 years ago

-3(y+3)=2y+3 Please solve this question

Mathematics

2 answers:

nydimaria [60]2 years ago

8 0

-3(y+3) = 2y+3
-3y-9 = 2y+3
-5y = 3+9
-5y = 12
y = -12/5

NARA [144]2 years ago

5 0

Answer:

y=-2.4y

Step-by-step explanation:

First you want to restate the problem.

-3(y+3)=2y+3

Now distribute the negative.

-3y-9=2y+3

Add 3y to both sides.

-9=5y+3

Subtract 3 from both sides.

-12=5y

And solve.

-2.4=y

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Answer:

The correct answer will be:

$-\dfrac{62}{23}$

Step-by-step explanation:

It is given that :

Initial temperature, $T_1 = 0^\circ F$

Final temperature,

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Time taken :

$5\dfrac{3}{4}\ hrs = \dfrac{5 \times 4+3}{4}\ hrs = \dfrac{23}{4}\ hrs$

Change in temperature per hour:

$\dfrac{\text{Difference of temperature}}{\text{Total Time Taken}}\\\Rightarrow \dfrac{T_2-T_1}{\text{Total Time Taken}}$

Putting the values of temperatures and time:

$\dfrac{\dfrac{-31}{2}-0}{\dfrac{23}{4}}\\\Rightarrow \dfrac{\dfrac{-31}{2}}{\dfrac{23}{4}}\\\Rightarrow \dfrac{-31 \times 4}{2 \times 23}} \text{---- Error done by Wen at this step}\\\Rightarrow \dfrac{-31 \times 2}{23}}\\\Rightarrow \dfrac{-62}{23}}$

The error done by Wen was during calculating the values of fraction.

So, the correct answer is : $\frac{-62}{23}}$ instead of $\frac{-713}{8}$

5 0

3 years ago

Read 2 more answers

Gabriela buys a basket of coconuts on sale for $22 before tax. The sales tax is 12% What is the total price Gabriela pays for th

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First you need to make a multiplier:
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Then you multiply the price by 1.12 to get the final answer;
22 * 0.78 = 17.16

This means it cost $17.16 after the 12% sales tax.

Hope this helps! :)

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