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SSSSS [86.1K]
3 years ago
7

The expression to find the perimeter of a rectangle is 2(length + width). What is the 1 perimeter, in units, of a rectangle of l

ength 7 unit and width 2 unit? ​
Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
8 0
The answer would be 18 units I believe

2(7+2)
2(9)
18 units

kolezko [41]3 years ago
4 0

Answer:

18/14 but reduced it would be 9/7

Step-by-step explanation:

Formula :P = 2(L + W)

You would change them into fractions over one, which os the 1 perimeter.

L = 1/7

W = 1/2

P = 2(L + W)

P = 2(1/7 + 1/2)

P = 2(2/14 + 7/14)

P = 2(9/14)

P = 18/14 which reduces to 9/7

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Item 4 In a circle with a radius of 36.9 m, an arc is intercepted by a central angle of 8π 5 radians. What is the arc length? Us
leva [86]

Answer:

The arc length is 185.39 meters.

Step-by-step explanation:

The arc length is calculated by the following expression:

\Delta s = \Delta \theta \cdot r

Where:

r - Radius, measured in meters.

\Delta \theta - Central angle, measured in radians.

If r = 36.9\,m and \Delta \theta =\frac{8}{5}\pi\, rad, the arc length, measured in meters, is:

\Delta s = \frac{8}{5}\pi\cdot (36.9\,m)

\Delta s = \frac{8}{5}\cdot (3.14)\cdot (36.9\,m)

\Delta s \approx 185.386\,m

\Delta s \approx 185.39\,m

The arc length is 185.39 meters.

5 0
3 years ago
A bag contains 6 blue marbles 10 red marbles and 9 green marbles. If 2 marbles are drawn at random without replacement what is t
umka2103 [35]

Answer:

P(1 and 2 are green) = 3/25

Step-by-step explanation:

We need to know the total number of marbles

6 Blue + 10 red + 9 green = 25 marbles

P ( 1st marble is green) = green/ total

                                       = 9/25

Since we don't put it back, there are  

6 Blue + 10 red + 8 green = 24 marbles

P ( 2st marble is green) = green/ total

                                       = 8/24  = 1/3

P(1 and 2 are green) = P(1st green) * P(2nd green)

                                  = 9/25 * 1/3

                                   = 3/25

5 0
4 years ago
Classify each number according to its value.
Tems11 [23]

Answer:See below and attached

Step-by-step explanation:

Given numbers

4.2×10^-6, 2.1×10^-3, 3.1×10^-2, 3.2×10^-5, 3.5×10^-4, 5.8×10^-3, 5.2×10^-4

Greater than 3.1×10^-3

3.1×10^-2, 5.8×10^-3

Between 3.1 × 10^-3  and 4.3 × 10^-5

2.1×10 ^-3, 3.5×10^-4, 5.2×10^-4

Less than 4.3 × 10^-5

4.2×10^-6, 3.2×10^-5

Step-by-step explanation

:

6 0
3 years ago
63 divided by 1,252
fiasKO [112]
The answer is 19.87302
5 0
3 years ago
Read 2 more answers
Solve the equation for x.
aliina [53]

Answer:

X is equal to 7

Step-by-step explanation:

Open parenthesis.

3/4x +63/4=21/2

take common denominator

3/4x=42/4-63/4

Solve

3/4x=-21/4

3x=21

x=7

7 0
3 years ago
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