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madreJ [45]
3 years ago
6

Please help me I don’t understand it :(

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0

Answer:

7√20

7√2*2*5

14√5#

Step-by-step explanation:

don't forget to mark as a brainlist

AfilCa [17]3 years ago
4 0

I know its 31.30495168

but I do not understand the simplify, if it means round, safest bet is just 31.30

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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
<span>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
</span>r*t=64<span>
 
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Doreen: rate = 8 mph, time = 8 hours
Sue:  </span>rate = 21 mph, time = 5 hours<span>


</span>
8 0
3 years ago
What interest rate, to the nearest tenth of a percent, that is required for an investment subject to continuous compounding to i
Sunny_sXe [5.5K]

Answer:

It will take an interest rate of 8.1% to get 150% of the initial investment in just 5 years.

Step-by-step explanation:

Use the formula for continuous compounding

X(t) = Pe^{rt}

where r stands for the (annual) interest rate, t for time in years, P for the initial principal (investment) and X is the amount after t years.

(this formula can be beautifully derived from just basic considerations, btw)

We are given t=5, and percent increase on the initial P, so we can solve for r

X(5) = 1.5P=Pe^{r\cdot5}\\1.5=e^{r\cdot5}\\\ln 1.5=\ln e ^{5r}\\\ln 1.5=5r\\r = \frac{\ln 1.5}{5}=0.081\rightarrow 8.1\%

It will take an interest rate of 8.1% to get 150% of the initial investment in just 5 years.

5 0
3 years ago
Will give Brainliest if answer is correct!
Kryger [21]

Answer:

a|| b then

<6=<4=<2=146

7 0
3 years ago
A delivery truck drove 203 mi in 3.5 h. After unloading and loading new cargo, it traveled on another 243 mi for 4.5 h.
sveticcg [70]
The answer is 55.75! Trust me I took a test on this and its the right one.
8 0
3 years ago
Read 2 more answers
Omar rides his unicycle on the playground.
Licemer1 [7]

Answer:

439.6 inches

Step-by-step explanation:

The distance apart cna be obtained using the formular :

Number of revolutions = 7

Diameter, d = 20 inches

π * number of revolutions * diameter

3.14 * 7 * 20

= 439.6 inches

6 0
2 years ago
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