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4 years ago

Find r if 3(r - 7) = 4(2 - 2r) + 4

Mathematics

2 answers:

Arturiano [62]4 years ago

4 0

Answer:

r=3

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

Distribute

3r -21 = 8 -8r +4

Combine like terms

3r -21 = 12 -8r

Add 8r to each side

3r +8r-21 = 12 -8r+8r

11r -21 = 12

Add 21 to each side

11r -21+21 =12+21

11r = 33

Divide each side by 11

11r/11 = 33/11

r = 3

irina [24]4 years ago

3 0

Answer:

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

3r+(-21)=8+(-8r)+4

-21+8+4=3r+(-8r)

-9=-5r

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11/12+(−7/12). Write your answer as a fraction in simplest form.

AleksAgata [21]

1/3 if you have a positive and a negative, it will turn into a positive so 11/12-7/12

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3 years ago

What is the value of p such that the line passing through (6,2) and (9,p) has a slope of -1?

Aleks [24]

Answer:

p= -1

Step-by-step explanation:

gradient=y²-y¹

x²-x¹

-1 =p-2

9-6

-1=p-2

3

multiply both sides by 3 to remove the denominators

-1×3=p-2

-3=p-2

put the like terms together

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3 years ago

-8x>-64 solve the inequality A. x<8 B. x>8 C. x<-72 D. x>72

saveliy_v [14]

Answer:

x<8

Step-by-step explanation:

divide each term by -8 and simplify

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4 years ago

Pew Research Center is a nonpartisan polling organization that provides information about issues, attitudes, and trends shaping

jarptica [38.1K]

Answer:

47% of American adult population

Step-by-step explanation:

The reason why polls are carried out is to obtain information that can represent the opinions, status or habits of the population. The polls do not include the total population, then include a small number of participants, but the results are extrapolated to the general population. There are always small margins of error resulting from polls, that is why the confidence levels are usually +/- 3 or 4%.

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4 years ago

Determine the unknown side length of the golden rectangle with the given width length. w = 7, l = _____ a. 14.16 b. 3.24 c. 11.3

soldier1979 [14.2K]

Since the rectangle is a golden one, then the fraction:
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The correct answer is D then

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3 years ago