Step-by-step explanation:
The ratio between the $5.80 spent for 58 text messages is $0.10. This means that each text message sent is $0.10. So you just multiply $0.10 and 40 text messages to find that it costs $4 to send 40 messages.

3 0

2 years ago

If a rectangle's length is y−2 and the width is 3y+2 write an expression for the perimeter and an expression for the area.

aalyn [17]

Answer:

Area = $3y^2 - 4y - 4$ units square.

Perimeter = 8y units.

Step-by-step explanation:

Area of a rectangle = length * width.

Perimeter of a rectangle = 2*(length + width).

It is given that length = y−2 units and width = 3y+2 units. To find the area and the area of the rectangle in terms of y, simply put the length and the width in the above area and perimeter equations.

Area = length * width = (y-2)*(3y+2).

Expanding the expression gives:

Area = 3y^2 + 2y - 6y - 4 = (3y^2 -4y - 4) units square.

Similarly,

Perimeter = 2*(length + width) = 2*(y-2 + 3y+2) = 2*4y = 8y units.

Therefore, the expression for the area and the perimeter of the given rectangle is ( $3y^2 - 4y - 4$ ) units square and (8y) units respectively!!!

3 0

4 years ago

If n and p are each different positive integers

Inessa [10]

Answer:

1 and 1/4

Step-by-step explanation:

3*1 +4*1/4

=3+1=4

6 0

3 years ago

If triangle MNO is rotated 180 degrees clock wise about the Irgun to form triangle PQR , what are the coordinates of the vertica

goblinko [34]

Answer: u got a course hero account ?

Step-by-step explanation:

6 0

3 years ago