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3 years ago

How many solutions does the following equation have? 3x + 7 + 2x = 5x + 7 One. Many. None

Mathematics

2 answers:

matrenka [14]3 years ago

8 0

Answer: many (all real numbers)

Step-by-step explanation:

1) add 2x and 3x to give you 5x

You now have 5x+7=5x+7

2) you can simplify this by subtracting 7 on both sides and dividing by 5

3) you are then left with x=x

Liula [17]3 years ago

6 0

Answer:

Infinite/many

Step-by-step explanation:

3x + 7 + 2x = 5x + 7

3x + 2x + 7 = 5x + 7

5x + 7 = 5x + 7

5x - 5x + 7 = 7

7 = 7

Infinite solutions

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3 years ago

Curtis is packing to move. He finds 23 photo albums in the attic and 45 albums in a closet. If he divides them equally among 4 b

zimovet [89]

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3 years ago

A dog weighs two pounds less than three times the weight of a cat. The dog also weights twenty-two more pounds than the cat. Wri

8090 [49]

Answer:

Weight of dog: 34 pounds,

Weight of cat: 12 pounds.

Step-by-step explanation:

Let d represent weight of dog and c represent weight of cat.

We have been given that a dog weighs two pounds less than three times the weight of a cat.

3 times weight of cat: $3c$

We can represent the given information in an equation as:

$d=3c-2...(1)$

We are also told that the dog also weights twenty-two more pounds than the cat. We can represent the given information in an equation as:

$d=c+22...(2)$

Equate both equations:

$3c-2=c+22$

$3c-c-2=c-c+22$

$2c-2=22$

$2c-2+2=22+2$

$2c=24$

$\frac{2c}{2}=\frac{24}{2}$

$c=12$

Therefore, the weight of cat is 12 pounds.

Substitute $c=12$ in equation (2)

$d=c+22$

$d=12+22$

$d=34$

Therefore, the weight of dog is 34 pounds.

4 0

4 years ago

The price of a pair of shoes is marked down 33%. The original price was $59.85. What is the sale price of the shoes? PLEASE HELP

ElenaW [278]

59.85 * .33= 19.7505

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so rounded shoes would be $40.07

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3 years ago

PLEASE HELP MEEEEEEEE.<br> Also can you explain how you got your answer

goldenfox [79]

Answer:

the last option, 10,12,15

Step-by-step explanation:

for every 3 of something you have 5 of something else, so the ratio is 3:5. That means when you have 6, double the amount of 3, you have the double amount of 5, 10.

5 0

3 years ago

Read 2 more answers