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Sav [38]
3 years ago
10

Using the Quadratic Formula solve this: 5r^2 = 80

Mathematics
1 answer:
kenny6666 [7]3 years ago
8 0
What how do you get an 80
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3. Solve 2log4y - log4 (5y - 12) = 1/2<br>​
Ilia_Sergeevich [38]

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

4 0
3 years ago
The ice cream vendor 's cold box holds 24 ice cream cups. The
jeyben [28]

Answer:

16

Step-by-step explanation:

24/8=3

48/3=16

7 0
3 years ago
Kate and Jean paint a house together in 6 days. If they work alone, Kate takes 5 fewer days than Jean would take to do the same
ELEN [110]
Katework+jeanwork=6
work alone
Katework=-5+Jeanwork
ad 5 to both sides
Katework+5=jeanwork
subsitute 5+katework for jeanwork
5+katework+kateworkwork=6
subtract 5 from both sides
2katework=1
divide both sides by 2
katework=0.5days

equation would be
jeanwork+katework=6 and
katework=jeanwork-5 are the equations

5 0
3 years ago
10 times The sum of half a numberand six is eight
GuDViN [60]

The numerical form of this worded expression is:

10(1/2n + 6)=8

4 0
4 years ago
What is -2 2/3 • -4 3/7
Tanya [424]

Answer:

11 17/21

Step-by-step explanation:

5 0
3 years ago
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