2 years ago

How do I solve problems like this? I did it last year, but I don't remember how to do it.

2 answers:

7 0

1/2x +3 = 7
-3 -3
1/2x=4 divide both sides by 1/2
x=2
2x + 3 -4x -7 =11
-2x -4 =11
+4 +4
-2x=15 divide both by -2
x= -7.5

ExtremeBDS [4]2 years ago

6 0

Answer:

Step-by-step explanation:

I do not know the details of the work but if it's a simple "Solve for x" question, you're not quite right.

1/2x+3=7

1/2x= 4

x= 8

You might be interested in

A man realizes he lost the detailed receipt from the store and only has the credit card receipt with the after-tax total. If the

Eva8 [605]

Heyyy hit me up if u want help.

3 0

3 years ago

Read 2 more answers

A certain ferry moves up and down a river between Town A and

Blizzard [7]

Answer: 60 miles

Step-by-step explanation:

Given

It takes ferry 2 hours to travel to town A and only $1.5\ hr$ to travel back to town B.

Speed of current is $u=5\ mph$

Suppose the speed of the ferry is $v$ mph

Distance traveled in both the cases is same, but it took more time traveling to city A that is, ferry is moving upstream and downstream for returning time.

$\Rightarrow 2(v-5)=1.5(v+5)\\\Rightarrow 2v-10=1.5v+7.5\\\Rightarrow 0.5v=17.5\\\Rightarrow v=35\ mph$

Distance between the towns is $2\times (35-5)=60\ \text{miles}$

5 0

3 years ago

Read 2 more answers

Gabriella has 4 times as many erasers as Leona.Leona has 8 erasers. How many erasers does Gabriella have

Juli2301 [7.4K]

Answer:32

Step-by-step explanation8 x 4 = 32:

6 0

3 years ago

Read 2 more answers

The product of two factors is 7,200.if one of the factors is 90,what is the other factor?

Eddi Din [679]

Ok. Something times 90 = 7200.

Let something = x

90x = 7200

Divide both sides by 90.

90x/90 = 7200/90

x = 80

The other factor is 80.

5 0

3 years ago

Can someone please help 3x+3(x+y)

GrogVix [38]

Hope you understand :)

8 0

3 years ago

Read 2 more answers