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Anit [1.1K]
3 years ago
5

How many different answers can you get by grouping differently? Add parentheses to the expression 7+3•4+2 to create new expressi

ons with as many different values as possible.
Mathematics
1 answer:
DiKsa [7]3 years ago
8 0

Answer: The different possible solutions are 42, 21, 31 and 80.

Explanation:

The given expression is,

7+3\cdot 4+2

Case 1.

(7+3)\cdot 4+2=10\cdot 4+2

(7+3)\cdot 4+2=40+2

(7+3)\cdot 4+2=42

Case 2.

7+(3\cdot 4)+2=7+12+2

7+(3\cdot 4)+2=21

Case 3.

7+3\cdot (4+2)=7+3\cdot 8

7+3\cdot (4+2)=7+24

7+3\cdot (4+2)=31

Case 4.

(7+3)\cdot (4+2)=10\cdot 8

(7+3)\cdot (4+2)=80

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The number of trees in garden discrete or continous
lana [24]

Answer:

The number of trees in a garden is discrete because you can count them easily.

Step-by-step explanation:

Discrete= The amount of something that is counted.

Continuous= Something that has to be measured.

Hope that helps. x

4 0
2 years ago
THIS IS 100 POINTS SOMEBODY PLEASEEEEEEEEEEEEEE HELP MEEEEE
Nookie1986 [14]

Answer: Option #4: the 0.2 could be changed to 2.

Explanation:

The table is designed to make the concept of percentages more understandable. The table first allocates the total amount of 70 in terms of its "fifths," or 20% parts. Then it expresses these parts in the last row of the table, showing that 20% of 70 is 14 and all the five parts sum up to 70 again.

Now, Mikel is supposed to express 40% of the amount. So she writes (incorrectly): 0.2 * 14. This statement needs to be changed to 2 * 14 (two times 14 = 28), to correspond to 2 times 20%, or 40%  of 70.

This is reflected in the last (fourth) option "The 0.2 in the expression could be changed to 2."

Option #3 is incorrect because changing 14 to 70, will result in an incorrect number (2.8).

Options 1 and 2 are similarly incorrect (as can be easily verified)

3 0
3 years ago
Read 2 more answers
What is the value of x in the equation 4x + 8y=40 when y=0.8
Fed [463]
8*.8=6.4 
4x+6.4=40
40-6.4=33.6
33.6/4=x
8.4=x

Hope this helps :)
8 0
3 years ago
Read 2 more answers
If a line with a slope of -2 crosses the y-axis at (0,3) what is the equation of the line
Ghella [55]
Hello!

The equation can be written as seen below. You only need a y-intercept and slope to write the equation.

y=-2x+3                             (it intercepts at a y-value of 3).

I hope this helps!
5 0
3 years ago
Which is greater than, less than, and equal to 18 tons or 36,000 lbs?
slamgirl [31]
36000 lbs = 16329.325 kg
18 ton = 18000kg

18 ton is greater
5 0
3 years ago
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