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3 years ago

Simplify the expression 2x - 4 +2 - 2x

Mathematics

1 answer:

horsena [70]3 years ago

8 0

Answer:

-2

Step-by-step explanation:

2x - 4 +2 - 2x

Combine like terms

2x-2x -4+2

0x -2

-2

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Add, subtract, multiply, or divide. Round answers to money problems to the nearest cent. Show how you solved these four problems

Katena32 [7]

Answer:

The formatting on this is a little weird but if I'm reading it correctly:

1) 3.38

2) 7.29

3) 0.05

4) 0.42

7 0

3 years ago

Find the difference between 7 1/2 and 2 3/4

NNADVOKAT [17]

Answer:

4 $\frac{3}{4}$ or 4.75

Step-by-step explanation:

first we're going to convert the number into improper fractions.

7 $\frac{1}{2}$ = $\frac{15}{2}$ and 2 $\frac{3}{4}$ = $\frac{11}{4}$

For subtracting it is suitable to adjust both fractions to an equal denominator, so we're going to multiply $\frac{15}{2}$ x2, it'll equal the same number.

So now we have $\frac{30}{4}$ - $\frac{11}{4}$ , 30-11= 19.

$\frac{19}4}$ simplified is, 4 $\frac{3}{4}$ .

As you can see I also added 4.75 as an answer, that's if the answer must be a decimal.

I hope this helps you!

3 0

3 years ago

A glacier receded 4 feet a day for a period of 25 days how much shorter was the glacier at the end of the period

KonstantinChe [14]

4*25=100

The glacier was 100 feet shorter than it was originally by the end of the 25 day period.

Hope this helps :)

5 0

3 years ago

The following data was collected from the manufacturing of an auto component. It represents the diameter (in mm) of that compone

kari74 [83]

Answer:

14.6

Step-by-step explanation:

(A). STEP ONE: Calculate the mean

(1). Row one = (10 + 12 + 12 + 14 ) = 48/4 = 12.

(2). Row Two: (12 + 11 + 13 + 16 ) = 52/4 = 13.

(3). Row three : (11 + 13 + 14 + 14)/4 = 13.

(4). Row four: (11 + 10 + 7 + 8)/4 = 36/4 = 9.

(5). Row five: (13 +12 + 14 + 13)/4 = 52/4 = 13.

(B). STEP TWO:

- determine the maximum and minimum value for each row.

- for each row, maximum - minimum.

Maximum values for each row:

Row one = 14, row two= 16, row three = 14, row four = 11 and row five = 14.

Minimum value for each row:

Row one = 10, row two = 11, row three = 11, row four =7 and row five = 12.

DIFFERENCES in each row :

row one = 14 - 10 = 4, row two = 16 - 11 = 5, row three = 14 - 11 = 3, row four = 11 - 7 = 4 and row five = 14 -12 = 2.

(C). STEP THREE: Calculate the mean of all the rows = 60/5 = 12.

(D). STEP FOUR : Calculate the Average Range = 18/5 = 3.6.

(E). STEP FIVE : Calculate the UCL.

A = Average rage × 0.729 = 3.6 × 0.729.

B = overall mean = 12.

UCL = A + B = 14.6.

7 0

3 years ago

2) write a linear function that passes through point ( 3, 6) and is perpendicular to Y=2X-1.

SVETLANKA909090 [29]

Answer:

y=-1/2*+5

Step-by-step explanation:

3 0

3 years ago