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2 years ago

Whats the best first step in solving the following equation?

Mathematics

2 answers:

Amanda [17]2 years ago

7 0

Answer: Subtract 10

Step-by-step explanation: Because you have to isolate x and since 10 with the fraction, you have to get rid of that in order to isolate it.

Andreyy892 years ago

4 0

Answer:

Multiply both sides by 3

Step-by-step explanation:

The best step would be to multiply both sides by 3 so that there are no fractions in the equation.

You might be interested in

How to write y=3 in standard form

wel

Answer:

Is the question complete

Step-by-step explanation:

6 0

2 years ago

The combined perimeter of the rectangle and triangle is 63 inches. The model shows the dimensions of the rectangle. What is the

katrin2010 [14]

*See diagram in the attachment

Answer:

27 inches

Step-by-step explanation:

Combined perimeter = perimeter of rectangle + perimeter of triangle = 63 inches

Perimeter of rectangle = 2(L + W)

L = 11 in.

W = 7 in.

Perimeter of rectangle = 2(11 + 7) = 36 in.

Let perimeter of the triangle be represented by x

Therefore:

36 + x = 63

Subtract 36 from each side

x = 63 - 36

x = 27

Perimeter of triangle = 27 inches

7 0

2 years ago

At a baseball game, 3 drinks and 4 hotdogs cost $15.00. At the same game, 3 drinks and 1 hotdog cost $10.50. Find the cost for a

Serhud [2]

Answer:

Step-by-step explanation:

Given data

Let the cost of drinks be x

and the cost of hotdogs be y

3x+4y=15-------1

also

3x+y= 10.5------2

solve 1 and 2

3x+4y=15

-3x+y= 10.5

3y= 4.5

divide both sides by 3

y= 4.5/3

y= $1.5

Put y= 1.5 in 1

3x+4(1.5)=15

3x+6= 15

3x=15-6

3x= 9

x= 9/3

x= $3

Hence the cost of a drink is $3

8 0

2 years ago

Simplify completely: 8x+4/x^3+23÷4x^2-10x-6/9-x^2

Helen [10]

Answer:

The simplified form is: $-x^2-2x+\frac{4}{x^3}+\frac{23}{4x^2}-\frac{2}{3}$

Step-by-step explanation:

To simplify the expression given we, need to open the brackets, and if there is power term. Then we need to group all the like terms and then arrange in the descending order of powers of the given expression.

Now the expression that is given to us is:

$8x+\frac{4}{x^3}+\frac{23}{4x^2}-10x-\frac{6}{9}-x^2$

Here we will simplify it by grouping the like terms, as follows:

$8x+\frac{4}{x^3}+\frac{23}{4x^2}-10x-\frac{6}{9}-x^2\\=-x^2+8x-10x+\frac{4}{x^3}+\frac{23}{4x^2}-\frac{6}{9}=-x^2-2x+\frac{4}{x^3}+\frac{23}{4x^2}-\frac{2}{3}$

So this is the required simplified form.

7 0

2 years ago

He sum of the interior angles, s, in an n-sided polygon can be determined using the formula s = 180(n 2), where n is the number

Evgesh-ka [11]

Answer:

Step-by-step explanation:

Equation

Sum = s = 180*(n - 2)

Solution

1260 = 180*(n - 2) Divide by 180

1260 / 180 = 180 * (n -2 ) / 180

7 = n - 2 Add 2 to both sides

9 = n

Answer

The polygon has 9 sides.

4 0

2 years ago