3 years ago

Anyone know how to do this ! ?

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

4 0

Answer:

which one

number please for giving answer

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Evaluate using Distributive property: [(-2/7)× (−4/9)] + [(-<br> 3/5)× (−4/9)]

crimeas [40]

Answer:

Step-by-step explanation:

[8/63] + [ 4/15 ]

= (120 + 652)/945

= 0.82

3 0

3 years ago

Help as quick as possible

Ymorist [56]

Answer:

7/2 = 35/10 & 3/5 = 6/10

Step-by-step explanation:

This is very hard to be explained, sorry.

6 0

3 years ago

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Please help if you can.

iVinArrow [24]

Answer:

Step-by-step explanation:

4 0

3 years ago

Help me plz.................

EastWind [94]

Answer:

1/8 cup

Step-by-step explanation:

x = 7/8 - 1/4 - 1/2

x = 7/8 - 2/8 - 4/8

x = 1/8

5 0

3 years ago

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A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 10.3

user100 [1]

Answer:

Confidence interval for the true mean number of reproductions per hour for the bacteria is (10.1,10.5).

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 10.3

Population standard deviation, σ = 2.1

Sample size, n = 728

Alpha, α = 0.01

Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.58$

$10.3 \pm 2.58(\frac{2.1}{\sqrt{728}} ) = 10.3 \pm 0.2008 = (10.0992,10.5008) \approx (10.1,10.5)$

6 0

3 years ago