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ELEN [110]
3 years ago
8

Brittany and Natalie, start cycling together from their home to school, which is 14.4 miles away. Natalie takes 40 minutes to re

ach school and Brittany reaches 20 minutes after Natalie.
How much faster is Natalie (in mph)?
Mathematics
1 answer:
prohojiy [21]3 years ago
3 0

Answer:

7.2

Step-by-step explanation:

1. Natalie needed 40 minutes to get to school. In hours 40 minutes is 40/60= 2/3 hour (because there are 60 minutes in an hour). so her speed is 14.4/(2/3)= 14.4*3/2= 21.6 mph.

2. Britany needed 40+20= 60 min. 60 min= 1 hour. so she needed 1 hour her speed is 14,4/1= 14.4mph

3. The difference 21.6-14.4=7.2 is the answer .

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Marta_Voda [28]

Answer:

1) 90%

2)40%

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Step-by-step explanation:

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8 0
4 years ago
Sam and Annika ride their bikes to school. Sam rides his bike (k) kilometers . Annika rides her bike 2 less than 4 times as many
BaLLatris [955]
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6 0
3 years ago
What is the discriminant of the polynomial below?<br>2x + 47-9​
stepan [7]

Answer:

x = -19

Step-by-step explanation:

3 0
3 years ago
Eight less than the product of 7 and a number is 3. Use the variable w for the unknown number
Tpy6a [65]
W = unknown number
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8 0
3 years ago
Read 2 more answers
Two friends board an airliner just before departure time. There are only 11 seats left, 4 of which are aisle seats. How many way
Vadim26 [7]

Using the Fundamental Counting Theorem, it is found that:

The 2 people can arrange themselves in 40 ways.

<h3>What is the Fundamental Counting Theorem?</h3>

It is a theorem that states that if there are n things, each with n_1, n_2, \cdots, n_n ways to be done, each thing independent of the other, the number of ways they can be done is:

N = n_1 \times n_2 \times \cdots \times n_n

With one people in the aisle and one in the normal seats, the parameters are:

n1 = 4, n2 = 7

With both in the aisle, the parameters is:

n1 = 4, n2 = 3

Hence the number of ways is:

N = 4 x 7 + 4 x 3 = 28 + 12 = 40.

More can be learned about the Fundamental Counting Theorem at brainly.com/question/24314866

#SPJ1

8 0
2 years ago
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