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3 years ago

If x=2 what is the perimeter?

Mathematics

1 answer:

Fiesta28 [93]3 years ago

4 0

Answer:

129

Step-by-step explanation:

(4*2^2+8*2)= 32

(3*2^2-5*2+20)=22

(7*2+30)=44

32+31+22+44=129

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1. The face of a brick is 3 1/2 inches by 8 inches. Suppose you want to create a

elena-14-01-66 [18.8K]

Answer:

40 bricks

Step-by-step explanation:

3 1/2×8

=28

56×20

=1,120

1,120÷28

=40 bricks

3 0

4 years ago

What is the area of the model in the problem?

nata0808 [166]

Answer:

$A=x^2+12x+27\ units^2$

Step-by-step explanation:

we know that

The area of the model is equal to the area of a rectangle

The area of a rectangle is equal to

$A=LW$

we have

$L=x+9\ units$

$W=x+3\ units$

substitute

$A=(x+9)(x+3)$

Apply distributive property

$A=x^2+3x+9x+27$

Combine like terms

$A=x^2+12x+27\ units^2$

4 0

4 years ago

Select the point that is a solution to the system of inequalities

Verizon [17]

Answer:

The answer is (1,6) so its either A or C since they both have (1,6)

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

Paula invests £4500 in a savings account

Leni [432]

Answer:

18.61

Step-by-step explanation:

Principle = £4500

Time = 6yrs

Rate = n%

Simple interest = £5025

n = ?

We know,

SI =PTR/100

£5025 = £4500*6*n/100

£502500 = £27000*n

n = 18.61

6 0

4 years ago

The

stepan [7]

Answer:

$Area = 129.5m^2$

$Perimeter = 48m$

Step-by-step explanation:

Given

See attachment

Required

Determine the area and the perimeter of the garden

Calculating Area

First, we calculate the $area\ of\ the\ rectangle$

$A_1 = L * B$

Where:

$L = 20-(3.5 +3.5)$

$B = 7$

So:

$A_1 = (20 - (3.5 + 3.5)) * 7$

$A_1 = (20 - 7) * 7$

$A_1 = 13 * 7$

$A_1 = 91$

Next, we calculate the area of the two semi-circles.

Two semi-circles = One Circle

So:

$A_2 = \pi r^2$

Where

$r = \frac{7}{2}$

$A_2 = \frac{22}{7} * (\frac{7}{2})^2$

$A_2 = \frac{22}{7} * \frac{49}{4}$

$A_2 = \frac{22}{1} * \frac{7}{4}$

$A_2 = \frac{22*7}{4}$

$A_2 = \frac{154}{4}$

$A_2 = 38.5$

Area of the garden is

$Area = A_1 + A_2$

$Area = 91 + 38.5$

$Area = 129.5m^2$

Calculating Perimeter

First, we calculate the perimeter of the rectangle

But in this case, we only consider the length because the widths have been covered by the semicircles

$P_1 = 2 * L$

Where:

$L = 20-(3.5 +3.5)$

So:

$P_1 =2 * (20-(3.5 +3.5))$

$P_1 =2 * (20-7)$

$P_1 =2 * 13$

$P_1 =26$

Next, we calculate the perimeter of the two semi-circles.

Two semi-circles = One Circle

So:

$P_2 = 2\pi r$

Where

$r = \frac{7}{2}$

$P_2 = 2 * \frac{22}{7} * \frac{7}{2}$

$P_2 = \frac{2 * 22 * 7}{7 * 2}$

$P_2 = \frac{308}{14}$

$P_2 = 22$

Perimeter of the garden is

$Perimeter = P_1 + P_2$

$Perimeter = 26 + 22$

$Perimeter = 48m$

8 0

3 years ago