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Kitty [74]
1 year ago
13

Pls give answer for 9c thanks

Mathematics
1 answer:
harina [27]1 year ago
7 0

Answer:

probability for 3 on a dice (P3) in one dice =

\frac{1}{6}

probability for even no. of a dice (Pe) =

\frac{3}{6}  =  \frac{1}{2}

Therefore, the probability of finding 3 on one dice and even on another (P) = P3 + Pe

=  \frac{1}{6}  +  \frac{1}{2}  =  \frac{1 + 3}{6}  =  \frac{4}{6}  =  \frac{2}{3}

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A rectangular swimming pool is 19 meters long, 11 1/2 meters wide, and 1 1/2 meters deep. What is its volume?
4vir4ik [10]

Answer:

327\frac{3}{4}

Step-by-step explanation:

→ State the volume of a rectangular prism

Length × Width × Height

→ Substitute in the numbers

19*11\frac{1}{2} *1\frac{1}{2}

→ Convert to improper fractions

\frac{19}{1} *\frac{23}{2} *\frac{3}{2}

→ Multiply

\frac{1311}{4}

→ Convert to mixed fraction

327\frac{3}{4}

6 0
2 years ago
Read 2 more answers
Please help! The answer to this is 2 but I don't know how to actually solve it so can someone please show the work for this?
s344n2d4d5 [400]

Answer:

2

Step-by-step explanation:

basically logarithms are like reverse exponents

log7, 49 is basically asking 7 to the what gets you 49

because of that its 2 because 7^2 gets you 49

4 0
3 years ago
Read 2 more answers
(2y + 9)(3y - 1) = 5y2 + 25y - 9
Vikki [24]

Answer:

y1= 0, y2= 5/3

Step-by-step explanation:

Remove the parentheses and multiply

then cancel the equal terms

collect the lie terms

move the variables to one side

divide both sides by two

split into possible cases

then solve the equation to get

y= 0 and

y= 5/3

7 0
3 years ago
Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite
yarga [219]

Answer:

<em>Rajan must use </em><em>0.75</em><em> liters of 5% hydrochloric acid solution and </em><em>0.25</em><em> liters of 45% hydrochloric acid solution.</em>

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

x+y=1

i.e x=1-y --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

0.05x+0.45y=1\times 0.15

i.e 5x+45y=15 -------------2

Putting value of x from equation 1 in equation 2,

\Rightarrow 5(1-y)+45y=15

\Rightarrow 5-5y+45y=15

\Rightarrow 5+40y=15

\Rightarrow 40y=15-5=10

\Rightarrow y=0.25

Putting the value of y in equation 1,

x=1-0.25=0.75

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters of 45% hydrochloric acid solution.

5 0
4 years ago
Please help me i need your help
yanalaym [24]

Answer:

did you ever get help?

Step-by-step explanation:

i wanna know

3 0
3 years ago
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