2 years ago

I keep doing 37ln(48)+0.05 but I keep getting it wrong

Mathematics

1 answer:

marshall27 [118]2 years ago

3 0

I got

1776In + 0.05
hope this helps !

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To travel 105 miles, it takes Sue, riding a moped, 3 hours less time than it takes Doreen to travel 64 miles riding a bicycle. S

Volgvan

Let t=time Doreen travels; let r=rate of Doreen

RATE * TIME = DIST.
Sue | r+13 t-3 105
Doreen | r t 64

Now solve the system:
(r+13)(t-3)=105
r*t=64

 $r= \frac{64}{t} 
\\
\\(\frac{64}{t} +13)(t-3)=105 
\\
\\64- \frac{192} {t}+13t-39-105=0
\\
\\13t- \frac{192} {t}-80=0
\\
\\ 13t^2-80t-192=0
\\
\\t_{1,2}= \frac{80\pm \sqrt{(-80)^2-4\times13(-192)} }{2\times13}= \frac{80\pm128}{26} 
\\
\\t=\frac{80+128}{26} =8
\\
\\r=\frac{64}{t} =\frac{64}{8} =8$ 

Doreen: rate = 8 mph, time = 8 hours
Sue: rate = 21 mph, time = 5 hours

8 0

3 years ago

Evaluate g(x)=3x when x=−2,0, and 5. g(−2)= g(0)= g(5)=

Snezhnost [94]

Answer:

g(-2)= -6, g(0)=0, g(5)=15

Step-by-step explanation:

Plug in each value of x into the function g(x) aka 3(x).

Multiply by three.

4 0

2 years ago

Write g(x)=4x^2+88 in vertex form

umka21 [38]

Answer:

(

)

−

484

Step-by-step explanation:

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3 years ago

Right now Seth's age is 4/5 the age of his brother Eric. Twenty-one years ago, Eric was twice as old as Seth. What are their age

ikadub [295]

The answer to this question is 19

8 0

3 years ago

X=-5 and Y=-6 (x+3y) squared.

Semmy [17]

(x+3y)^2
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(-5+3·6)^2
(-5+18)^2
(-5+18)(-5+18)
25-90-90+324
169 is your answer.

3 0

3 years ago