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-Dominant- [34]
3 years ago
14

Katrina is solving the equation x minus 2 (x + 3) = 4 (2 x + 3) minus (x + 4). Which equivalent equations might Katrina use? Che

ck all that apply.
Mathematics
2 answers:
IrinaK [193]3 years ago
6 0

Answer:

-7/4 =x

Step-by-step explanation:

x-2(x+3) = 4(2x+3) -(x+4)

Distribute

x -2x -6 =8x+12 -x -4

Combine like terms

-x-6 = 7x +8

Add x to teach side

-x-6 +x = 7x+x+8

-6 = 8x+8

Subtract 8 from each side

-6-8 =8x+8-8

-14 = 8x

Divide by 8

-14/8 = 8x/8

-7/4 =x

tresset_1 [31]3 years ago
3 0

Answer:

<h2>-5/6</h2>

Step-by-step explanation:

(x + 3) = 4 (2 x + 3)- (x + 4)\\Ope- the- brackets\\x+3 = 8x +12-x-4 \\Collect- like- terms\\x-8x+x=12-4-3\\-6x =5\\Divide-both-sides-by -6\\\frac{-6x}{-6} =\frac{5}{-6} \\x =-5/6

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Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class?
raketka [301]

Answer:

45 girls

Step-by-step explanation:

  • Remark
  • There are only 2 choices for gender. So if the class is 60% girls, the there must be 100 - 60 = 40% for the boys.
  • But we are told that the boys are 30 in number.
  • Let x = the total number of students.

Solution

  • 40/100 * x = 30              Change the % to a decimal
  • 0.4 x = 30                       Divide both sides by 0.4
  • 0.4 x / 0.4 = 30 / 0.4      Do the division
  • x = 30/0.4
  • x = 75 students in total

Formula

Total of Boys and Girls = Number of boys + number of girls.

Givens

  • Total = 75
  • Number of boys = 30

Solution II

  • 75 = x + 30                 Subtract 30 from each side
  • 75 - 30 = x +30 - 30
  • 45 = x
  • There are 45 girls in the class.
5 0
4 years ago
Pls answer quickly
DedPeter [7]

Answer:

Ounces

Step-by-step explanation:

Metric tons and tons is too much while kg is too little.

8 0
2 years ago
5.9 divided by 497.252
romanna [79]

Answer:

0.011865211

Step-by-step explanation:

5.9/497.252 =0.011865211

7 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
denis23 [38]

Your answer is D. 36 - 8i

<em>I'm only a few Brainliests away from ranking up, so one would be much appreciated. Thank you, and good luck!</em>

3 0
3 years ago
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Can i have help please
ipn [44]

yes I well help you, the answer is 4,–3,–3

7 0
2 years ago
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