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Tatiana [17]
3 years ago
7

You've decided to give your best friend a

Mathematics
2 answers:
labwork [276]3 years ago
5 0
56 green marbles!

Hope this helps!:)
GaryK [48]3 years ago
4 0

Answer:

Green marbles = 56

Red marbles = 28

Step-by-step explanation:

let's assume the number of red marbles be x

then the number of green marbles = 2x

( since green marble is twice the red ones )

and we know,

green marbles + red marbles = total marbles

=》2x + x = 84

=》3x = 84

=》x = 84 / 3

=》x = 28

so, number of red marbles = x = 28

number of green marbles = 2x = 56

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A random sample of 5200 permanent dwellings on an entire reservation showed that 1571 were traditional hogans.
quester [9]
P^ = 1571/5200 = 0.3021

99% C I = 0.3021 + or - 2.58sqrt((0.3021(1 - 0.3021))/5200) = 0.3021 + or - 0.0064 = 0.296 to 0.309
lower limit = 0.296
upper limit = 0.309
4 0
4 years ago
Read 2 more answers
Please help it's for a test!
Tanya [424]

Answer:

0.2322   or    23.22 %

Step-by-step explanation:

We have to solve and find the area out of these limits

μ + 0,3 =  210 + 0,3   ⇒    210,3  and

μ - 0,3  =  210 - 0,3   ⇒    209.7

z(l)   = ( x - 210 ) / (2.8/√84)   ⇒  z(l) =  - (0.3 * 9,17)/ 2.8

z (l)  = - 1.195  

We need to interpole from z table

               1.19         ⇒     0.1170

              1.20       ⇒      0.1151

   Δ  ⇒     0.01     ⇒      0.0019

And between our point   1,195 and 1,19   the difference is  0.005

then        0.01          ⇒   0.0019

              0.005      ⇒      ?? (x)

we find x =  0.00095

to get the area for poin  z (l)  - 1.195 up to final left tail is from  z table

0,1170 - 0.00095 =  0.1161

And by symmetry  to the right is the same

So   0.1161 * 2   =  0.2322

We find the area out of the above indicated limits  the area we were looking for. This is the probability of finding shafts over and below the population mean and 0.3 inches

Step-by-step explanation:

5 0
3 years ago
Janice gives Rs 215.50 to Mia. if she started with Rs 403.75.how much money does she have left​
stellarik [79]

Answer:

188.25

Step-by-step explanation:

Okay, so. He had 403.75. He gives 215.50 to Mia. So, we would subtract it.

403.75 - 215.50 = 188.25

Therefore they will have 188.25 left.

7 0
4 years ago
For the following linear system, put the augmented coefficient matrix into reduced row-echelon form.
guapka [62]

The augmented matrix is

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\2&-4&8&3&10&7\\3&-6&10&6&5&27\end{array}\right]

Add -2(row 1) to row 2, and add -3(row 1) to row 3:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&-1&8&-13\\0&0&1&0&2&-3\end{array}\right]

Add -1(row 2) to row 3:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&-1&8&-13\\0&0&0&1&-6&10\end{array}\right]

Add row 3 to row 2:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&0&2&-3\\0&0&0&1&-6&10\end{array}\right]

Add -3(row 2) to row 1, and add -2(row 3) to row 1:

\left[\begin{array}{ccccc|c}1&-2&0&0&7&-1\\0&0&1&0&2&-3\\0&0&0&1&-6&10\end{array}\right]

7 0
3 years ago
How would 5,000,000,000 + 70,000,000 + 70,000 + 700 + 8 be written in standard form? OA) 57,778 OB) 570,078 OC) 577,000,078 OD)
Morgarella [4.7K]

Answer:

D) 5,070,070,708

Step-by-step explanation:

5,000,000,000

70,000,000

70,000

700

8

5,070,070,708

8 0
3 years ago
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