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ycow [4]
3 years ago
12

Prove: 3 log3 81= 4 log4 64​

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Step-by-step explanation:

  1. 3log3 3^4=4log4 4^3
  2. 3*4 log3 3=4*3 log4 4
  3. 12 log3 3= 12 log4 4
  4. 12*1=12*1 (loga a=1)
  5. 12=12
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Mr Martin has 120 CDs. The ratio of indie CDs to dance CDs is 5:7. How many of each type of CDs does he have.
algol [13]

Answer

Martin has 50 indie CDs and 70 dance CDs

Step-by-step explanation:

5+7=12 120/12 =10 10x5=50 and 10x7=70 So Martin has 50 indie cds and 70 dance CDs

4 0
3 years ago
Last week at Best Bargain, 75% of the computers sold were laptops. If 340 computers were sold last were, how many were laptops?
QveST [7]

Answer:

255

Step-by-step explanation:

We need to find 75% of 340...

75%*340

Let's convert 75% to a fraction to make the math easier...

75/100*340

Now let's simplify 75/100 to again make it easier...

3/4*340=255

5 0
3 years ago
Which is the slope of the line that passes through the points (-2,4 and (5,-1)?
12345 [234]
Use the slope formula which is y2-y1/x2-x1. -1-4/5-(-2)= -5/7
5 0
4 years ago
Read 2 more answers
Points B, D, and Fare midpoints of the sides of angle ACE. EC = 39 and DF = 18. Find AC
Dmitry [639]

Answer: Line AC = 36

Step-by-step explanation: The first and most important clue is the fact that points B, D and F are midpoints of the triangle ACE. What this tells us is that point B divides line AC into two equal sides. Likewise points D and F. If point D divides line EC into two equal sides, then line ED equals

39/2 = 19.5

Also, triangle FED is similar to triangle AEC. Since ED is half of EC, and FE is half of AE. Therefore in triangles FED and AEC,

FD/ED = AC/EC

18/19.5 = AC/39

By cross multiplication we now have

(18 x 39)/19.5 = AC

702/19.5 = AC

36 = AC

Therefore line AC = 36

6 0
3 years ago
Which equation matches the graph?
Oduvanchick [21]
Y=3x+2
the slope is 3 cause the rise is 3 and the run is 1
7 0
4 years ago
Read 2 more answers
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