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umka2103 [35]
3 years ago
9

What is 30% of 70 for big ideas math

Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0

Answer:

21

Step-by-step explanation:

30 Percent of 70 could be written .3 × 70. .3 times 70 is 21

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An experiment was conducted to assess the efficacy of spraying oats with malathion tocontrol the cereal leaf beetle.A sample of
lesantik [10]

Answer:

C

Step-by-step explanation:

Solution:-

- An experiment on the efficacy of spraying malathion on oats to control the growth cereal leaf beetle.

- A sample of n = 10 farms was taken at random. Each farm was either subjected to control group ( no spray ) or the treatment group ( spray ).

- Power ( β ) is the probability of rejecting the null hypothesis when, in fact, it is false. I.e the test statistics lie in the rejection region or the benefit of adding malathion is proven in-effective when in fact it is in-effective.

- Power is the probability of avoiding a ( Type II error ). Mathematically expressed as:

                    Type II Error = 1 - β

- Power is the probability of making a correct decision (to reject the null hypothesis) when the null hypothesis is false.

- The probability that a test of significance will pick up on an effect that is present.

Hence,

Answer: It is the ability to detect the effectiveness of malathion when in fact it is effective.

3 0
3 years ago
Is the open sentence 3z=2z+5 true or false when z=5?<br><br> A. True<br> B. False
inna [77]
Hey there! 

If z = 5 

we replace "z" with "5" 

So, let's test out the problem to see if it is true or false

Problem becomes: 3(5) = 2(5) + 5

Let's work this out

3(5) = 15

Problem becomes: 15 = 2(5) + 5

2(5) = 10

Problem becomes: 15 = 10 + 5

10 + 5 = 15

So, therefore it looks like this statement/ sentence is True!

~MeIsKaitlyn:)

3 0
3 years ago
Find the solution to each equation mentally or use your calculator. (Hint: do the opposite of the number on the left side of the
il63 [147K]

Answer:

A. 10

B. 300

C. -3

D. -3,567

Step-by-step explanation:

im pretty sure this is coreect i apologize if not

3 0
3 years ago
How many does it means subtract or add
Elza [17]
It depends on the question, but if the question is, how many is there....
It usually means to <u><em>add</em></u>

(What is the question anyway?)

7 0
3 years ago
Read 2 more answers
Please help thanks!!
Lostsunrise [7]
Help with what there is nothing?
4 0
4 years ago
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