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creativ13 [48]
3 years ago
6

Which expression is equivalent to 84+16 A. 2(42+4) B. 4 (42+4) C. 2 (21+8) D. 4 (21+4)

Mathematics
2 answers:
Irina18 [472]3 years ago
7 0

Answer:

D

Step-by-step explanation:

21 + 4 = 25 x 4 = 100 and 100 is 84 + 16


Gwar [14]3 years ago
7 0
D. 4 (21+4)
4 (25) = 84+16
these both add to 100
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20 - 3(3x - 4) <br> Solve the equation
Pavlova-9 [17]

Answer:

32 - 9 x (don't know what you want simplify or solve for x) x = 32/9

Step-by-step explanation:

Simplify the following:

20 - 3 (3 x - 4)

-3 (3 x - 4) = 12 - 9 x:

12 - 9 x + 20

Grouping like terms, -9 x + 12 + 20 = (20 + 12) - 9 x:

(20 + 12) - 9 x

20 + 12 = 32:

Answer: 32 - 9 x

_________________________________

Solve for x:

20 - 3 (3 x - 4) = 0

-3 (3 x - 4) = 12 - 9 x:

12 - 9 x + 20 = 0

Grouping like terms, -9 x + 12 + 20 = (20 + 12) - 9 x:

(20 + 12) - 9 x = 0

20 + 12 = 32:

32 - 9 x = 0

Subtract 32 from both sides:

(32 - 32) - 9 x = -32

32 - 32 = 0:

-9 x = -32

Divide both sides of -9 x = -32 by -9:

(-9 x)/(-9) = (-32)/(-9)

(-9)/(-9) = 1:

x = (-32)/(-9)

Multiply numerator and denominator of (-32)/(-9) by -1:

Answer: x = 32/9

3 0
4 years ago
Roger sells fire trucks and dolls to a toy store. He sells each fire truck for $15 and each doll for $10. Roger wants to sell at
Furkat [3]

Answer:

this is the correct answer for plato (Roger should make 10 fire trucks and 15 dolls in order to minimize the time spent making toys.)

Step-by-step explanation:


3 0
4 years ago
Read 2 more answers
Pls help work is due tonight i will give brainliest
yanalaym [24]

Answer

the first one is the answer and none of the above

Step-by-step explanation:

4 0
3 years ago
A study indicated that residents of manchester wasted 2695 gallons of water this tear. That is 50% less than last year . How man
Alenkasestr [34]

Answer:

5390 gallons of water was wasted by the city's residents last year.

Step-by-step explanation:

Let x denotes gallons of water wasted by the city's residents last year.

Gallons of water wasted by the city's residents this year = 2695 gallons

This is 50% less than last year.

Therefore,

x-\frac{50}{100}x=2695\\\\\frac{50}{100}x=2695\\\\\frac{x}{2} =2695\\\\x=2(2695)

x=5390 gallons

So, 5390 gallons of water was wasted by the city's residents last year.

7 0
3 years ago
In a problem it says that x is "at most –5." What does this mean?
STatiana [176]
It means that -5 is the range of your answer, it will be less than that.
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3 years ago
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