4 years ago

When would be only four different equations for a set of math mountain numbers

1 answer:

6 0

Only when any equation you find among those numbers can be simplified into one of the four main equations, wich means you only have four different true statements, and lots of equivalences.

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Someone help me please.

zhenek [66]

I did the answers on the picture.

5 0

3 years ago

Rewrite 17/20 and 13/15 so that they have a common denominator.

dangina [55]

Answer:

51/60, 52/60

Step-by-step explanation:

20 and 15 are 5×2×2 and 5×3. The smallest common denominator would be 5×2×2×3=60.

5 0

2 years ago

In testing the lethal concentration of a chemical found in polluted water. it is found that a certain concentration will kill 20

sasho [114]

Answer:

a) 0.1091

b) 0.9994

c) 0.5886

Step-by-step explanation:

X = the number of fish out of 20 that die after 24 hours

x = 0, 1, 2, . . . , 20

X~ Binomial (n= 20, p =0.20)

P(14 survive) = P(X = 6)

= $nC_r p^r q^{n-r}= 20C_6 0.2^6\times0.8^{14}$ =0.1091

Similarly we can find out

P(at least 10 survive) = P( X <= 10 ) = (Using technology) = 0.9994

P(at most 16 will survive) = P(X <= 16) = (Using technology) = 0.5886

7 0

3 years ago

Jane was given a bag of sweets and ate two-thirds of them right away. The next day she ate two-thirds of the remainder and the f

Wewaii [24]

Answer:

Step-by-step explanation:

First you take two and multiply it by three, which gives you 6. Then you multiply it by three and get 18. Then you multiply and get 54.

6 0

3 years ago

Read 2 more answers

If all the angles are equivalent (the same), the angles must each be 60 degrees because 60 times 3 angles equals 180.

arlik [135]

Answer: A

Step-by-step explanation: true true true

6 0

3 years ago