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3 years ago

7

The histogram below represents the high tempatures recorded each day over a one month period. How many days had a tempature belo

w 60

1 answer:

Gwar [14]3 years ago

3 0

Answer: 22

Step-by-step explanation:

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Một xạ thủ bắn 10 viên đạn vào một mục tiêu, với xác suất bắn trúng mục tiêu ở mỗi lần bắn là p=0,8. Biết rằng, nếu cả 10 viên đ

strojnjashka [21]

Answer:

Step-by-step explanation:

A gunner fires 10 bullets at a target, with the probability of hitting the target at each shot is p = 0.8. Know that, if all 10 bullets hit the target, the target is definitely destroyed. If 2-9 bullets hit the target, the target is destroyed with a probability of 80%. If only 1 bullet hits the target | then the target is destroyed with a probability of 20%. What is the probability that the target is destroyed?

8 0

3 years ago

Given the two rectangles below. Find the area of the shaded region.

Harrizon [31]

Answer:

52 units²

Step-by-step explanation:

A = L × W

Area = Length × Width

First find the total area: 44

Half that to find the total left side that is shaded: 22

Find the bottom right side, imagine it is a seperate shape. It would be 4 × 2 = 8. 44 + 8 = 52.

- Educator

6 0

3 years ago

A person jogged 10 times along the perimeter of a rectangular field at the rate of 12 kilometers per hour for 30 minutes. If the

notsponge [240]

Answer:

<u>The area of the rectangular field is 20,000 square meters.</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Number of times a person jogged along the rectangular field = 10

Speed of the person jogging = 12 km per hour

Time he/she jogged = 30 minutes = 0.5 hours

Length of the field = twice its width

2. Find the area of the field in square meters.

Step A: Let's calculate the distance the person jogged

Let's recall the formula of the speed:

Speed = Distance/Time

Distance = Speed * Time

Replacing with the values we know:

Distance = 12 * 0.5

<u>Distance = 6 kilometers</u>

Step B: Let's calculate the perimeter of the rectangular field

Distance jogged = ¨Perimeter * 10

6 kilometers = Perimeter * 10

Perimeter = 6/10

<u>Perimeter = 0.6 kilometers = 0.6 * 1,000 = 600 meters</u>

Perimeter = 2 * Length + 2 * Width

x = Width of the rectangular field

2x = Length of the rectangular field

600 = 2 * 2x + 2 * x

600 = 4x + 2x

600 = 6x

<u>x = 600/6 = 100 meters ⇒ 2x = 200 meters</u>

Step C: Let's calculate the area of the rectangular field

Let's recall the formula of the area of a rectangle:

A = Length * Width

A = 200 * 100

<u>A = 20,000 m² (square meters)</u>

7 0

4 years ago

Write the equation in standard form of a circle with center (-7,2), tangent to the y-axis.

Vesna [10]

Answer:

$(x+7)^2+(y-2)^2=7^2$

Step-by-step explanation:

Tangent to y-axis means that the side of the circle TOUCHES the y axis.

Since the center is at (-7,2) and it touches the y axis, we can figure out the radius. It goes from (-7,2) to y-axis. Horizontally, the center is 7 units left of y-axis, so that is the radius ----- 7 units

The standard form of a circle is:

$(x-h)^2+(y-k)^2=r^2$

Where

(h,k) is the center

r is the radius

Putting the information into the form, we have:

$(x-h)^2+(y-k)^2=r^2\\(x-(-7))^2+(y-(2))^2=7^2\\(x+7)^2+(y-2)^2=7^2$

THis is the standard form.

7 0

3 years ago

James earned $570 after working 12 days.

AlekseyPX

Answer:

1900

Step-by-step explanation:

570/12 = The rate at which James earns money, or $47.5

47.5 × 40 = 1900 Because you wan to know the value after 40 days

8 0

3 years ago