1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pychu [463]
3 years ago
11

3. Solve 2log4y - log4 (5y - 12) = 1/2​

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
4 0

Answer:

y =  4  or y = 6

Step-by-step explanation:

2log4y - log4 (5y - 12) = 1/2

​2log_4(y) - log_4(5y-12) = log_4(2)           apply law of logarithms

log_4(y^2) + log_4(1/(5y-12)) = log_4(/2)    apply law of logarithms

log_4(y^2/(5y-12)) = log_4(2)                     remove logarithm

y^2/(5y-12) = 2                                            cross multiply

y^2 = 10y-24                                                  rearrange and factor

y^2 - 10y + 24 = 0

(y-4)(y-6) = 0

y= 4 or y=6

You might be interested in
#3 AB and AD are tangent to the circle centered at point C. Find the value of x. *
dezoksy [38]

Answer:

x=4

Step-by-step explanation:

tangent lines from the same point to a circle are congruent in length, so we can say that

5x+8 = 8x-4

5x -5x +8 = 8x - 5x -4

8 = 3x - 4

8+4 = 3x -4 + 4

3x = 12

3x/3 = 12/3

x=4

8 0
3 years ago
Jackie's restaurant bill was $23. 50, and the tax was 8%. Jackie left a 20% tip on the post-tax bill. How much was the tip Jacki
Ksju [112]

well, the subtotal or pre-tax bill is $23.50, now let's add the 8% tax and

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8\% of 23.50}}{\left( \cfrac{8}{100} \right)23.50}\implies 1.88

so the post-tax bill is 23.50 + 1.88 = 25.38, and Jackie's tip is 20% of that

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 25.38}}{\left( \cfrac{20}{100} \right)25.38}\implies 5.076\qquad \approx 5.08

6 0
2 years ago
How do you graph the equation Y = 4x + 2 and 4x - 3y = 12?
Pachacha [2.7K]

Answer:look below

Step-by-step explanation:

To graph y= 4x +2 plot the point (0,2) on the graph because the y-intercept is 2 then use the slope: 4 to find another point. Another point would be (1,6).

6 0
3 years ago
WILL GIVE BRAINLIEST ANSWER
Ad libitum [116K]
<span>2² + 4² ÷ 2<span>²

4 + 16 </span></span>÷ 4

4 + 4

8
7 0
3 years ago
Read 2 more answers
2x-y=5<br>2x-2y=4<br><img src="https://tex.z-dn.net/?f=2%20%5Ctimes%20%20-%20y%20%3D%205%20%5C%5C%202%20%5Ctimes%20%20-%202y%20%
d1i1m1o1n [39]
\left\{\begin{array}{ccc}2x-y=5\\2x-2y=4&|\cdot(-1)\end{array}\right\\\underline{-\left\{\begin{array}{ccc}2x-y=5\\-2x+2y=-4\end{array}\right}\ \ \ \ |add\ both\ sides\\.\ \ \ \ \ \ \ \ y=1\\\\substitute\ the\ value\ of\ y\ to\ first\ equation\\\\2x-1=5\ \ \ |+1\\2x=6\ \ \ |:2\\x=3\\\\\left\{\begin{array}{ccc}x=3\\y=1\end{array}\right
7 0
3 years ago
Other questions:
  • How many 1000s are in 287,123
    12·2 answers
  • Can somebody please help me with 1 and 2 and explain why that’s the answer thanks
    11·1 answer
  • 15. Simplify the expression below. Show your work.<br> –(–7y - 24)
    6·2 answers
  • 1. Find the sum of the series . 15 show your work
    5·2 answers
  • Can someone plz help me as soon as possible will mark brainliest
    13·2 answers
  • Find the percent of the area under the density curve where x is more than 3. <br>​
    6·1 answer
  • Picture shown!
    10·1 answer
  • A library raised $4,508. The library wants to buy as many books as it can. Each box coat $17. How many books can it buy?
    9·1 answer
  • 5 2 1 2 <br><br>3 3 4 5 <br><br>5 4 3 3 <br><br>4 5 1 2 <br><br>calculate the mean of the data​
    11·1 answer
  • Please help and fast for brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!