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3 years ago

Solve the following: A) 4x-1/2=x+7 B) 3x+2=2x+13/3 C) 2x-7/4=3+x/3

Mathematics

1 answer:

s2008m [1.1K]3 years ago

4 0

Answer:

a. 2.5

b. 2.333

c. 2.85

Step-by-step explanation:

A) 1. subtract -x on both sides 2. to get 3x-1/2=7

3. Add 1/2 on both sides 4. to get 3x=7.5

5. divide 3 on both sides 6. To get... x=2.5

B)1. Same process. 2. x+2=13/3

3. x=13/3-2 4. x= 2.33(repeating)

C) 1. same process. 2. 2x-x/3=3+7/4

3. 2x-x/3=4.75 4. Isolate -x/3

5.-x/3=4.75-2x 6. multiply both sides by 3

7. -x=14.25-6x 8. 5x=14.25

9. x= 2.85

* remember to distribute the 3 to each variable.

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Step-by-step explanation:

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3 years ago

Read 2 more answers

At a drive through restaurant Juan’s family ordered a small drink and m medium drinks. Alex’s family ordered m medium drinks and

sertanlavr [38]

Answer:

Expression x + 2my + z represents cost of order where x, y, z are cost of small , medium and large drinks (in dollars) respectively.

Solution:

Given that

Juan’s family ordered a small drink and m medium drinks.

Alex family ordered m medium drinks and a large drink.

Need to write an algebraic expression which shows total cost of both order in dollars.

Let’s assume cost of one small drink = x

And assume cost of one medium drink = y

And assume cost of one large drink = z

So now cost of order of Juan’s family is equal to cost of 1 small drink + cost of m medium drinks = 1 $\times$ x + m $\times$ y

= x + my

And cost of order of Alex family is equal to cost of m medium drinks + cost of one large drink

= m x y + 1 x z

=my + z

So total cost of both order in dollars = x + my + my + z = x + 2my + z

Hence expression x + 2my + z represents cost of order where x , y , z are cost of small , medium and large drinks (in dollars) respectively.

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