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3 years ago

Use the equation P=10-2.5c find P when c=3.2

Mathematics

2 answers:

satela [25.4K]3 years ago

6 0

Answer:

p = 2

Explanation:

Insert 3.2 for c

p = 10 − (2.5)(3.2)

Simplify both sides of the equation

p = 10 − (2.5)(3.2)

p = 10 + −8

p = (10 + −8) (Combine Like Terms)

p = 2

Svet_ta [14]3 years ago

6 0

Answer: P=2

Step-by-step explanation:

Plug in 3.2 to -2.5c [10-2.5(3.2)]
Multiply -2.5 & 3.2 ang get -8
Do subtraction (10-8)
P=2

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A square is folded into half to form a rectangle. the perimeter of the rectangle is 36cm. calculate the area of a square

zhannawk [14.2K]

Answer:

Let the measure of each side of the square be " x " cm.

then ,

area of square = x²

After we folded the square into a rectangle ,

length of rectangle = x

breadth of rectangle = x/2

perimeter of rectangle = 36 cm

$x + \frac{x}{2} + x + \frac{x}{2} = 36 \\ \\ \frac{2x + x + 2x + x}{2} = 36 \\ \\ \frac{6x}{2} = 36 \\ \\ 6x = 36 \times 2 \\ \\ 6x = 72 \\ \\ 6x = \cancel{\frac{72}{6} } = 12cm$

hence ,

side of square = 12 cm

therefore ,

area of square = 12 × 12 = 144 cm²

hope helpful~

8 0

2 years ago

Solve the system of equations using the addition method 2a+3b=-1 ; 3a+5b=-2

Alexeev081 [22]

Answer:

Then, a=-1 and b=-1

Step-by-step explanation:

We need to solve the following system of equations using the adition method:

2a+3b=-1 (i)

3a+5b=-2 (ii)

First, we multiply the equation (i) by -3 and the equation (ii) by 2, so we get:

-6a-9b=3

6a+10b=-4

Adding the two equations we have:

-6a-9b=3

6a+10b=-4

--------------------------

0 + b = -1

Then b=-1. Now, let's substitute the value of b into equation (i):

2a+3b=-1

2a + 3(-1) = -1

2a -3 = -1

2a = 2

a = 1

Then, a=-1 and b=-1

3 0

3 years ago

Read 2 more answers

Convert to standard circle form <img src="https://tex.z-dn.net/?f=%20%20x%5E%7B2%7D%20%2By%20%5E%7B2%7D%20-6x-4y-12%3D0%20%20" i

DIA [1.3K]

x^2 + y^2 - 6x - 4y - 12 = 0
x^2 - 6x + y^2 - 4y = 12
x^2 - 6x + 9 + y^2 - 4y + 4 = 12 + 9 + 4
(x - 3)^2 + (y - 2)^2 = 25

7 0

3 years ago

Dorothy is using fabric to cover a photo album the width of the fabric is 5/8 of a yard the area of the fabric is 5/16 square ya

saul85 [17]

For this case we assume that the photo album is rectangular in shape and therefore the fabric too. By definition, the area of a rectangle is given by:

$A = a * b$