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LenaWriter [7]
3 years ago
6

What is the first step in evaluating the expression below?

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

brackets, then Parenthesis then the FIRST Multiplication then the division and then math and sub and so on a so for

Step-by-step explanation:

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a worker A finishes a project on his own in 12 days. the worker completes the same work alone in 16 days. the two workers starte
ankoles [38]

Answer:

<em>Worker B needs 9 days to finish the rest of the work</em>

Step-by-step explanation:

<u>Proportions</u>

Worker A finishes a project on his own in 12 days and worker B does the same in 16 days.

Worker A does 1/12 of the project in one day and worker B does 1/16 of the project in one day. When working together, they do

\frac{1}{12}+\frac{1}{16}=\frac{7}{48}

After 3 days they have completed:

3*\frac{7}{48}=\frac{7}{16}

parts of the project, this means it still remains:

1-\frac{7}{16}=\frac{9}{16}

parts of the project and it is done by B alone. Since B does \frac{1}{16} per day, he now takes

\displaystyle \frac{\frac{9}{16}}{\frac{1}{16}}=9

days to complete the project.

Worker B needs 9 days to finish the rest of the work

4 0
3 years ago
There are six households in a rural community. Each household earns $40,000 per year. Suppose that a new resident builds a mansi
dusya [7]

Answer:

Median income has not changed

Mean income has increased

Step-by-step explanation:

Initial number of houses = 6

Earning per household = $40,000

The initial mean :

$(40,000 * 6) / 6 = $40000

Initial median :

40000, 40000, 40000, 40000, 40000, 40000

= 1/2(n+1)th term,

Median = 40000

A 7th household earns 4,000,000

Mean = ((40000*6) + 4,000,000) / 7 = $605,714

Median = 1/2(n+1)th term

40000, 40000, 40000, 40000, 40000, 40000, 4000000

Median = 4th term = 40000

7 0
3 years ago
Can A triangle can be formed with side links 4 inches 5 inches in 8 inches
oksian1 [2.3K]
No it can not.............
5 0
3 years ago
A line is defined by the equation 2 x + y = 4. Which shows the graph of this line?
Black_prince [1.1K]

Answer:

Step-by-step explanation:

divide by 4

\frac{x}{2} +\frac{y}{4} =1\\x-intercept=2\\y-intercept=4\\draw~ a~ line~ through~ (2,0)~ and ~(0,4)

it is the reqd. graph.

3 0
3 years ago
Read 2 more answers
How much space is given for each parking spot at the mall parking lot if each spot has an equal width?
Akimi4 [234]
Assuming that the lengths are all the same, which they are usually regulated by federal law, the space will be the area (l x w)
7 0
3 years ago
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