I know mia is right but what’s the explaining?

Mathematics

2 answers:

Vedmedyk [2.9K]3 years ago

6 0

Answer:

Just explain why you chose mia..

Step-by-step explanation: Why do you think mias right?

mihalych1998 [28]3 years ago

6 0

Answer:

Mia is right

Step-by-step explanation:

But the reason is because y=4+6x mark is going over the line and he needs to make sure its accross.

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Marie mixes 20 liters of 12% acid solution with a 36% acid solution to make a 20% acid solution. How many liters of 36% solution

kykrilka [37]

Use c1v1+c2v2=c3v3
where c=concentration, v=volume.

C1=0.12
V1=20 L
C2=0.36
V2=X
C3=0.20
V3=20+X L

Substitute in equation
0.12(20) + 0.36X = 0.20(20+X)
Expand
2.4 + 0.36X = 4 + 0.2X
Simplify
(0.36-0.2)X = 4-2.4
0.16X = 1.6
X=1.6/0.16 = 10 L

check:
0.12(20)+0.36(10)=2.4+3.6=6.0
(20+10)*0.20 = 6.0 so solution is good.

Answer: Volume of 36% solution is 10L

6 0

3 years ago

A box contains 6 red marbles, 4 green marbles, 3 blue marbles, and 2 yellow marbles. If Greg chooses one marble at random 300 ti

dusya [7]

Answer:

$60$ times

Step-by-step explanation:

There are $6+4+3+2=15$ marbles in total. Out of those, $3$ are blue, so the probability of pulling a blue marble is $\frac{3}{15}=\frac{1}{5}$ . However, this is only the probability of pulling a blue marble when $1$ marble is pulled at random. Therefore, we can expect a blue marble to be pulled $\frac{1}{5}*300=60$ times if $1$ marble is pulled $300$ times at random. Hope this helps!