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1 year ago

Which expressions are equivalent?

Mathematics

2 answers:

Hunter-Best [27]1 year ago

8 0

3x - 7y and 7y + 3x bc they're interchangeable

lukranit [14]1 year ago

5 0

Answer:

3x -7y = -7y+3x

Step-by-step explanation:

3x is positive and 7y is negative

We can reverse the order

3x -7y = -7y+3x

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7th grade math. Trying to find area. How do i find the area?

Komok [63]

Answer:

Step-by-step explanation:

A= bh

A = 6 x 10

A = 60

5 0

3 years ago

Read 2 more answers

Find a formula for the described function. A rectangle has perimeter 16 m. Express the area A of the rectangle as a function of

Alex17521 [72]

Part A:

Let the length of one of the sides of the rectangle be L, then the length of the other side is obtained as follow.

Let the length of the other side be x, then

$2(L+x)=16 \\ \\ \Rightarrow L+x=8 \\ \\ \Rightarrow x=8-L$

Thus, if the length of one of the side is x, the length of the other side is 8 - L.

Hence, the area of the rectangle in terms of L is given by

$L(8 - L) = 8L-L^2$

Part B:

To find the domain of A

Recall that the domain of a function is the set of values which can be assumed by the independent variable. In this case, the domain is the set of values that L can take.

Notice that the length of a side of a rectangle cannot be negative or 0, thus L cannot be 8 as 8 - 8 = 0 or any number greater than 8.

Hence the domain of the area are the set of values between 0 and 8 not inclusive.

Therefore,

$dom(Area)=0\ \textless \ L\ \textless \ 8 \ or \ (0, 8)$

3 0

3 years ago

Which is the height of the triangle?<br> ( PIC IS PROVIDE PLS HELP ME)

zysi [14]

<h3>Answer: 80 meters</h3>

This is an isosceles triangle. The dashed line is the height which is perpendicular to the base 120. The height is always perpendicular to the base. The dashed line cuts the base into two equal pieces (this only works for isosceles triangles when you cut at the vertex like this).

So we have two smaller triangles each with a base of 60 and a height of x. Focus on one of the right triangles and use the pythagorean theorem to solve for x.

a^2 + b^2 = c^2

x^2 + (60)^2 = (100)^2

x^2 + 3600 = 10000

x^2 = 10000 - 3600

x^2 = 6400

x = sqrt(6400)

x = 80

Each smaller right triangle has side lengths of 60, 80, 100

Note the ratio 60:80:100 reduces to 3:4:5. A 3-4-5 right triangle is a very common pythagorean primitive.

5 0

3 years ago

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What is the solution of 5x+4=7

Nastasia [14]

The solution is x = 3/5

5 0

2 years ago

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Which of the given values are in the interval (-3,1]?

Vladimir [108]

The values coming in the interval (-3,1] are -2, -1, 0, and 1.

<h3>What is defined as the term interval notations?</h3>

An interval is represented on a number line using interval notation. In all other sayings, it is a method of writing real number line subsets.
An interval is made up of numbers that fall between two specific data set.
Intervals can be categorized according to the numbers in the set.

Interval Open: The endpoints of a inequality are not included in this type of interval.
Interval Closure; The endpoints of a inequality are included in this type of interval.
Interval with Half-Open Doors: This interval contains only one of inequality's endpoints.

The given interval notation is;

(-3,1], it is the case of half open half close.

-3 comes with the open interval, it means its value will not be included in the interval.

1 is with the closed interval, it means its value will be included in the interval.

Thus, the values lying between the interval (-3, 1] are -2, -1, 0, and 1.

To know more about the interval notations, here

brainly.com/question/16768997

#SPJ10

6 0

1 year ago