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Sonbull [250]
3 years ago
14

There are 12 red marbles in a bag. The ratio of the total number of marbles in the bag to the number of red marbles in the bag i

s 5:2. How many marbles are in the bag?
Mathematics
1 answer:
harina [27]3 years ago
5 0

Answer:

30 marbles

Step-by-step explanation:

x = total # marbles

5/2 = x/12

2x = 60

x = 30

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Please solve these questions I am hella desperate rn
Reptile [31]

Answer:

Please solve these questions I am hella desperate rn

Step-by-step explanation:

5 0
2 years ago
The sales tax on a used car is​ $174​, and the sales tax rate is 5​%. Find the purchase price ​(the price before taxes are​ adde
rosijanka [135]

Answer:

Step-by-step explanation:

Let x be the purchase price

5% of x = $ 174

\frac{5}{100}*x=174\\\\x=174*\frac{100}{5}\\\\x=174*20\\

Purchase price = $ 3480

8 0
3 years ago
We roll a fair die repeatedly until we see the number four appear and then we stop. The outcome of the experiment is the number
muminat

Answer:

0

Step-by-step explanation:

given that we roll a fair die repeatedly until we see the number four appear and then we stop.

the number 4 can appear either in I throw, or II throw or .... indefinitely

So X = the no of throws can be from 1 to infinity

This is a discrete distribution countable.

Sample space= {1,2,.....}

b) Prob ( 4 never appears) = Prob (any other number appears in all throws)

= \frac{5}{6} *\frac{5}{6} *\frac{5}{6} *\frac{5}{6} *...\\=(\frac{5}{6} )^n

where n is the number of throws

As n tends to infinity, this becomes 0 because 5/6 is less than 1.

Hence this probability is approximately 0

Or definitely 4 will appear atleast once.

8 0
3 years ago
Find the distance bewtween the points (3,3) and (-1,-2)
Otrada [13]

Answer:

\sqrt{41}

Step-by-step explanation:

\sqrt{(3-(-1))^2+(3-(-2))^2}=\sqrt{16+25}=\sqrt{41}

Hope this helps!

6 0
3 years ago
If a pool is 4 m wide and 16 m diagonally across, how long is the pool? (Pyth. Theorem)
alukav5142 [94]

Answer:

L=4\sqrt{15}\ m

or

L=15.49\ m

Step-by-step explanation:

we know that

Applying the Pythagorean Theorem in the rectangular pool

d^2=L^2+W^2

where

d is the diagonal of the pool

L is the length of the pool

W is the wide of the pool

we have

d=16\ m\\W=4\ m

substitute the given values

16^2=L^2+4^2

solve for L

L^2=16^2-4^2\\L^2=240\\L=\sqrt{240}\ m

simplify

L=4\sqrt{15}\ m

or

L=15.49\ m

4 0
3 years ago
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