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irina [24]
3 years ago
14

Which of these ratios is NOT in simplest form? 4/9 11/13 6/5 14/21

Mathematics
2 answers:
Dominik [7]3 years ago
7 0
The answer is 14/21.

This fraction can be reduced to 2/3.
Just divide each number by seven.
For the other fractions, if you can find a number that can be divided into each then it is not in simplest form.
nordsb [41]3 years ago
5 0
I have to say 11/13. Hope this helps!
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The wildlife department has been feeding a special food to rainbow trout fingerlings in a pond. based on a large number of obser
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The normal distribution curve for the problem is shown below

We need to standardise the value X=405.5 by using the formula

z-score= \frac{X-Mean}{Standard Deviation}
z-score= \frac{405.5-402.7}{8.8} =0.32

We now need to find the probability of z=0.32 by reading the z-table

Note that z-table would give the reading to the left of z-score, so if your aim is to work out the area to the right of a z-score, then you'd need to do:

P(Z\ \textgreater \ z)=1 - P(Z\ \textless \ z)

from  the z-table, the reading P(Z\ \textless \ 0.32) gives 0.6255

hence, 
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The probability that the mean weight for a sample of 40 trout exceeds 405.5 gram is 0.3475 = 34.75%

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3 years ago
On a coordinate plane the location of 3 points are (0,6) (5,-4) and (-1,-5) where would the fourth point need to be located in o
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Spencer needs 2 gallons of paint to create a mural. He has 3/8 gallon of yellow and 1/4 gallon of blue paint. Drag amounts of pa
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Step-by-step explanation:

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Read 2 more answers
In parallelogram abcd, ab=14, bc=20, m(angle)b=54. Find to the nearest tenth the length of diagonal bd, and find measure angle d
muminat
It is is a parallelogram, hence we have to face sides equal in length and the opposite angles are also the same. From the given above we have:
ab=14 and its opposite side cd=14
bc=20 and its opposite side da=20

Solving for the diagonal measurement bd, we have consecutive angles are equal to 180°
∠A+∠B=180°
∠A=180°-54°
∠A=126° , ∠B=54° ,∠C=126° and ∠D=54°
bd²=ab²+da²-2(ab)(da)cos126°
bd²=14²+20²-2*14*20cos126°
bd=30.42 unit

Solving for the angle dbc, we have
cos dbc=bc²+bd²-cd²/a*bc*bd
cos dbc=20²+30.42²-14²/2*20*30.42
dbc=21.76° 
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3 years ago
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