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Scrat [10]
3 years ago
14

The wind was blowing quite strongly when Jenny was baby-sitting. She was outside with the children, and they were throwing their

large plastic ball up into the air. The wind blew the ball so that it landed approximately 3 feet east and 4 feet north of where it was thrown into the air.

Mathematics
2 answers:
ludmilkaskok [199]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Romashka [77]3 years ago
3 0

<u>Answer:</u>

d. \left[\begin{array}{ccc}x+3\\y+4\end{array}\right]

<u>Step-by-step explanation:</u>

We are given that the wind blew the ball so that it landed approximately 3 feet east and 4 feet north of where it was thrown into the air.

We know that East is at the right which can be shown by positive value of x while North is upwards so it can be shown by addition in the value of y.

Therefore, the correct answer option is:

d. \left[\begin{array}{ccc}x+3\\y+4\end{array}\right]

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There are 500 students in a high school senior class. Of these 500 students, 300 regularly wear a necklace to
andre [41]

Answer:

<u>1. P(N) =  3/5</u>

<u>2. P(R) =  2/5</u>

<u>3. P(N and R) = 1/4</u>

<u>4. P(N or R) = 3/4</u>

Step-by-step explanation:

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

Number of students in a high school senior class = 500

Number of students that regularly wear a necklace = 300

Number of students that regularly wear a ring = 200

Number of students that wear a necklace and a ring = 125

2. What is P(N), the probability that a senior wears a necklace?

Let's recall the formula of probability:

Probability = Number of favorable outcomes/Total of possible outcomes

Substituting with the real given values:

P(N) = 300/500 = 3/5 (Dividing by 100 numerator and denominator)

<u>P(N) =  3/5</u>

3. What is P(R), the probability that a senior wears a ring?

Substituting with the real given values:

P(R) = 200/500 = 2/5 (Dividing by 100 numerator and denominator)

<u>P(R) =  2/5</u>

4. What is P(N and R), the probability that a senior wears a necklace and a ring?

Substituting with the real given values:

P(N and R) = 125/500 = 1/4 (Dividing by 125 numerator and denominator)

<u>P(N and R) = 1/4</u>

5. What is P(N or R), the probability that a senior wears a necklace or a ring?

P(N or R) = P(N) + P(R) - P(N and R)

Substituting with the real given values:

P(N or R) = 3/5 + 2/5 - 1/4

P(N or R) = 5/5 - 1/4

P(N or R) = 1 - 1/4

<u>P(N or R) = 3/4</u>

5 0
3 years ago
In Europe, the speed limits on the highways are posted in kilometers per hour. In the United States, the speed limits are posted
mina [271]
I believe the answer is 104 km per hour. correct me if i’m wrong anyone.
8 0
3 years ago
Line segment ab has endpoints a(9, 3) and b(2, 6). find the coordinates of the point that divides the line segment directed from
Dominik [7]
When we are to divide the line segment such that the ratio is 1:2, there are actually 3 parts of the segment. First, we determine the distance between the coordinates and divide the distance by 3. Then, we add the quotient to the x-coordinate.

x-coordinate:    (2 - 9) / 3 = -7/3
y-coordinate:    (6 - 3 ) / 3 = 1

Adding them to the coordinates of a,
           x - coordinate: (9 - 7/3) = 20/3
           y - coordinate: (3 + 1) = 4
Thus, the coordinates are (20/3, 4). 
7 0
3 years ago
joe puts $790.00 into a savings account that pays 5.5% simple interest. he leaves the money in his account for two years.
Dmitrij [34]

Answer: $879.29


Step-by-step explanation:

790(1.055)^2

790(1.113025)

= 879.28975


6 0
3 years ago
Help Help Help it's in khan academy
inna [77]

Answer:

Step 1 is wrong

Step-by-step explanation:

\frac{1}{4} r+ 2 = 10

\frac{r}{4}  + 2 = 10

\frac{r}{4}  = 10  -  2

\frac{r}{4}  = 8

r = 8 \times 2

r = 32

<h3>Hope it is helpful...</h3>
7 0
3 years ago
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