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Gala2k [10]
4 years ago
10

Could someone please help me solve 8y-9=7/2Y

Mathematics
2 answers:
Sladkaya [172]4 years ago
5 0
We bring ecuation to the same denominator

16y -18=7y

16y-7y=18

9y=18

y=18/9=2
aleksandrvk [35]4 years ago
5 0

According to the BODMAS rule, the question you had posted looks like this:

8y-9=(7/2)*y

8y-9=(7y/2)

16y-18=7y

16y-7y=18

9y=18

y=18/9

y=2

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2. Your friend wants to write the equation of a quadratic function 1 5. 3.r = 1) that has zeros at 3 and 3. They want to use the
Feliz [49]

Let's expand both options, your friend's and yours, as shown below

\begin{gathered} y=(3x+1)(3x-5)=9x^2-12x-5=9(x^2-\frac{4}{3}x-\frac{5}{9}) \\ \text{and} \\ y=(x+\frac{1}{3})(x-\frac{5}{3})=x^2-\frac{4}{3}-\frac{5}{9} \end{gathered}

Then, both equations are the same besides a constant that will not affect the zeros of the functions, as shown below

\begin{gathered} y=(3x+1)(3x-5) \\ x=-\frac{1}{3} \\ \Rightarrow y=(-1+1)(-1-5)=0 \\ \text{and} \\ x=\frac{5}{3} \\ \Rightarrow y=(5+1)(5-5)=0 \\  \end{gathered}

And

\begin{gathered} y=(x-\frac{5}{3})(x+\frac{1}{3}) \\ x=-\frac{1}{3} \\ \Rightarrow y=(-\frac{1}{3}-\frac{5}{3})\cdot0=0 \\ x=\frac{5}{3} \\ \Rightarrow y=0\cdot(\frac{6}{3})=0 \end{gathered}

Both your friend and you are correct. The functions are the same with exception of a constant that multiplies the whole function (a scale factor); despite that, the zeros are the same for both functions

(3x-5)(3x+1)=9(x+\frac{1}{3})(x-\frac{5}{3})

7 0
2 years ago
1. Solve for w in the equation W/5 = 25<br> A.W = 5<br> B.W = 125<br> C. W = 30<br> D.W = 20
vekshin1

Answer: <em>w = 125</em>

Explanation: Since <em>w</em> is being divided by 5, to solve for <em>w</em>,

multiply both sides of the equation by 5.

On the left side, the 5's will cancel

and on the right side, 25(5) is 125.

So <em>w = 125</em>.

<u />

<u>Please do not do this problem in your head.</u>

Show the work that it takes to get <em>w</em> by itself.

3 0
3 years ago
400 ml of squash is made by mixing 50 ml of cordial with water. What fraction of the drink is water?
avanturin [10]

Answer:

Fraction of drink that is water = = 0.875 = 87.5 %

Explanation:

 400 ml of squash is made by mixing 50 ml of cordial with water.

 Total volume of squash = 400 ml

   Total volume of cordial = 50 ml

   Total volume of water  =  400 - 50 = 350 ml

    Fraction of drink that is water = Volume of water/ Volume of squash

                                                     = 350/400

                                                     = 7/8

                                                     = 0.875 = 87.5 %


 

   

3 0
3 years ago
Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o
AURORKA [14]

Answer:

4 hours

Step-by-step explanation:

I hope this helps :)

7 0
4 years ago
The frequency distribution chart below represents scores from a math quiz. which statement best describes the data?
babunello [35]

Answer:

a. The data is skewed left

Step-by-step explanation:

Looking at the graph, the bars are noticeably much taller on the right side when compared to the left.

The mean is likely less than the median, if calculated.

The skewed side of the graph is opposite to what it looks like.

5 0
3 years ago
Read 2 more answers
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