All categories

3 years ago

Help me on this one 4y - (y -4) =-20

Mathematics

2 answers:

Natalka [10]3 years ago

5 0

Hey there!!

Given equation :-

... 4y - ( y - 4 ) = -20

Let' re write this equation as :

... 4y -1 ( y - 4 ) = -20

Using the distributive property :

... 4y + ( -1 ) ( y ) + ( -1 ) ( -4 ) = -20

... 4y - y + 4 = -20

Combining like terms :

... 3y + 4 = -20

Subtracting 4 on both sides :

... 3y = -24

Dividing by 3 on both sides :

... y = -24/3

... y = -8

Hope my answer helps!!

iVinArrow [24]3 years ago

4 0

Y = -8

I think.. hope this helps!

You might be interested in

If u took a test that had 150 questions on it but didn’t finish 27 of the questions, what percentage of the questions did u answ

Alenkinab [10]

Answer:

82%

Step-by-step explanation:

Total number of questions = 150

Questions not answered = 27

questions answered = 150 - 27 = 123

percent questions answered

= (questions answered / total questions ) x 100%

= (123/150) x 100%

= 82%

6 0

4 years ago

Five years from now, the sum of the ages of a women and her daughter will be 40 years. The difference in their present age is 24

CaHeK987 [17]

Answer:

Her daughter is 3 years old now.

Step-by-step explanation:

Given:

Five years from now, the sum of the ages of a women and her daughter will be 40 years.

The difference in their present age is 24 years.

Now, to find how old is her daughter now.

Let the age of daughter be $x\ years$ .

And the age of mother be $y\ years$ .

According to question:

$(x+5)+(y+5)=40$

⇒ $x+y+10=40$

Subtracting both sides by 10 we get:

⇒ $x+y=30$

⇒ $x=30-y$ ............( 1 )

Now, as given in question:

The difference in their present ages is 24 years.

$x-y=24$

Putting the equation ( 1 ) in the place of $x$ we get:

⇒ $(30-y)-y=24$

⇒ $30-2y=24$

Moving variable on one side and the numbers on the other:

⇒ $30+24=2y$

⇒ $54=2y$

Dividing both sides by 2 we get:

⇒ $27=y$

So, the age of the mother is 27 years.

Now, putting the value of $y$ in equation( 1 ) we get:

$x=30-27$

⇒ $x=3$

The age of daughter is 3 years.

Therefore, her daughter is 3 years old now.

4 0

3 years ago

How do you solve this problem

torisob [31]

Divide the price by the number of payments.

$15,480/36 = $430

4 0

3 years ago

The table shows the ratio between the number of books ordered and their cost: Find equivalent ratios when the number of books or

Nana76 [90]

Answer:

The answer is below

Step-by-step explanation:

The table shows the ratio between the number of books ordered and their cost: Number of Books Cost (dollars) 7 21 8 24 9 27 Find equivalent ratios when the number of books ordered is 1, 2, and 3. Write them as ordered pairs in the form (x-coordinate, y-coordinate). Starting from the origin, explain how to plot the three equivalent ratios on a coordinate grid.

Answer: Let the number of books be represented as x and the cost (dollars) be represented as y. From the table the ordered pairs in the form (x, y) can be gotten. (7, 21), (8, 24), (9, 27). To get the relationship between the number of books and the cost, we can use the formula of a straight line.

Using point (7, 21) and (8, 24):

$y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-21=\frac{24-21}{8-7}(x-7)\\ \\y-21=3(x-7)\\\\y=3x-21+21\\\\y=3x$