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Elina [12.6K]
4 years ago
13

Can someone help please

Mathematics
1 answer:
Margaret [11]4 years ago
7 0
9. Area of a triangle is proportional to height. If the height increases by a factor of 4, then ...
  The area will increase by a factor of 4. . . . . (2nd selection)

10. The base lengths and height are needed:
  • 5 mm
  • 8 mm
  • 10 mm
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Someone help me please I don't know how to do this ! :(
Ivanshal [37]
4^{x+1}=21\\
x+1=\log_421\\
x=\log_421-1\\
x=\log_421-\log_44\\
x=\log_4\dfrac{21}{4}\\
x=\dfrac{\ln \dfrac{21}{4}}{\ln 4}\approx 1.1962
5 0
4 years ago
Last year the backgammon club had 30 members. This year the club had 24 members. Find the percent of decrease in the number of m
Gnom [1K]

There is 20% decrease in the number of members.

Step-by-step explanation:

Given,

Members last year = Old value = 30

Members this year = New year = 24

Change = New value - Old value

Change = 24 - 30

Change = -6

The negative sign indicates the decrease.

Decrease percent = \frac{Change}{Old\ value}*100

Decrease percent = \frac{6}{30}*100

Decrease percent = \frac{600}{30}

Decrease percent = 20%

There is 20% decrease in the number of members.

Keywords: percentage, division

Learn more about division at:

  • brainly.com/question/10341324
  • brainly.com/question/10364988

#LearnwithBrainly

8 0
3 years ago
A circus acrobat is shot out of a cannon. The equation for the acrobat's pathway can be modeled by h= -16t^2+25. How long will i
Alex_Xolod [135]
For this we almost have the following equation:
 h = -16t ^ 2 + 25

 We must match the equation to zero:
 -16t ^ 2 + 25 = 0

 From here, we clear the value of t.
 We have then:
 16t ^ 2 = 25

t ^ 2 = 25/16
 We discard the negative root because we are looking for time:
 t =  \sqrt{ \frac{25}{16} } 


 t =  \frac{5}{4}
 Answer:
 
it will take him to reach the ground about:
 
t = \frac{5}{4} seconds
5 0
3 years ago
PLZ HELP ASAP WILL GET BRAINLIEST WHEN IT LETS ME
solniwko [45]
That part is the median, which is 57.

7 0
4 years ago
Read 2 more answers
The formula for the future value VV (in dollars) of an investment earning simple interest is V=p+prtV=p+prt, where pp (in dollar
wlad13 [49]
The future value of the investment in dollars s
V = p + prt
where 
p = principal, dollars
r = annual interest rate (in decimal form)
t = time, years

To determine p, write the formula as follows:
Factorize p out on the right side.
  V = p(1 + rt)
Divide each side b (1 + rt).
  \frac{V}{1+rt}=p

Answer:
p= \frac{V}{1+rt}


5 0
3 years ago
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