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siniylev [52]
3 years ago
9

An electrician charges $322 for 7 hours of work. How much does the electrician charge for one hour?

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0

Answer:

About 46 dollars an hour

Step-by-step explanation:

322/7 = 46

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Elizabeth bought 6 lipsticks for $15. How many lipsticks can be bought for $60
dmitriy555 [2]

Answer:

4 lipsticks

Step-by-step explanation:

15+15=30, 30+30=60

3 0
2 years ago
What is the slope of the line shown below (- 1, 8) (2, - 4)
suter [353]

Answer:

The slope of the line can be determined from the gradient equation, rise (y axis)/ run (x-axis)

Hence let (-1, 8) be A and (2, -4) be B. The slope from A to B is (-4-8)/(2-(-1))= (-12)/3= -4

Hence the gradient/ slope of the line is -4.

Step-by-step explanation:

6 0
3 years ago
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
Pls help ill give brainliest !!
AnnyKZ [126]

Answer:

4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
You can model the entrance to a mine shaft using the equation
Furkat [3]

y=-1/2 2 (x+4)(x+-4+

-1/2*2 = -1

y=-1(x+4)(x-4)

solving for x

x - -4 and x =4

-4 to 4 = 8 feet

 width = 8 feet

4 0
3 years ago
Read 2 more answers
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