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3 years ago

The area of a square ice rink is 400 yd.². What is the perimeter of the rink in yards

Mathematics

1 answer:

MakcuM [25]3 years ago

8 0

Answer:

80 yd^2

Step-by-step explanation:

Since the formula for squares is s^2, we can use this to set up an equation, which is

s^2=400

If we square root this, we get

s=20

The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2

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Police plan to enforce speed limits by using radar traps at four different locations within the city limits. The radar traps at

dalvyx [7]

Answer:

The probability that the person gets a speeding ticket is 0.27

Step-by-step explanation:

The probability that the person receives a speeding ticket is the probability that the person passes through any of the speed limits and the radar is operating at that time.

Let $P(L_1)$ is the probability that the person passes through radar $L_{1}$ and it is operating at that time is

$P(L_{1})=P(1)\times P(2)$

Where

P(1) is the probability of person passes through $L_{1}$

P(2) is probability that the radar is operating

$P(L_1)=0.2\times 0.4=0.08$

Similarly the probabilities are calculated for other radars in the similar manner as

$P(L_2)=0.1\times 0.3=0.03$

$P(L_3)=0.5\times 0.2=0.1$

$P(L_4)=0.2\times 0.3=0.06$

Thus the reuired probability of the reuired event is

$P(E)=P(L_1)+P(L_2)+P(L_3)+P(L_4)\\\\P(E)=0.08+0.03+0.1+0.06=0.27$

8 0

3 years ago

Connie went shopping and spent one-half of her money at Allen's Grocery Store. She then spent one-third of what she had left at

gulaghasi [49]

Answer:

$30

Step-by-step explanation:

6 • 1/3 = 18

18 • 1/2 = 36

36 - 6 = 30

3 0

3 years ago

A box contains four equal sized cards labeled 1,3,5,7 Tim will select one card from the box What is the probability that Tim wil

Mice21 [21]

Answer:

0 is the probability that Tim will select a card labeled with a number 6.

Step-by-step explanation:

We are given the following in the question:

Number of cards = 4

Cards with labels:

1,3,5,7

Tim will select one card from the box. We have to find the probability that Tim will select a card labeled with a number 6.

Formula:

$\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}$

$\text{P(Label 6) = }\dfrac{0}{4}= 0$

0 is the probability that Tim will select a card labeled with a number 6. Thus, it is an impossible event.

4 0

3 years ago

The perimeter of a rectangle is 60 centimeters. The base is 2 times the height. What are the dimensions of the rectangle?

tankabanditka [31]

Licenciado en Letrase (base 20 y altura 10 cm.

3 0

3 years ago

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larisa [96]

Answer:

Step-by-step explanation:

6 0

2 years ago