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Gnoma [55]
3 years ago
7

Aubrey can walk 4 1/2 miles in 1 1/2 hours. Find her average in miles per hour.

Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

3

Step-by-step explanation:

Convert to improper fractions:

4 1/2 = 9/2

1 1/2 = 3/2

Find the reciprocal:

9/2 / 3/2 = 9/2 x 2/3

Multiply:

9/2 x 2/3 = 18/6

Simplify:

18/6 = 3

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Sean is choosing what size gloves to order from an online store. He estimates that his hand is 20 centimeters long. When he meas
SCORPION-xisa [38]

Answer:

10%

Step-by-step explanation:

Sean first thought that his hand was 20 cm so:

20cm

When he measures with a ruler, he gets 18 cm so:

18cm

The equation is really simple, and you basically do:

20/20 - 18/20 = 2/20 = 1/10 = 10%

The equation is:

1- x/y

x equals the new number

y equals the original number

4 0
2 years ago
Is the product of two imaginary numbers always imaginary?
Diano4ka-milaya [45]
No. i*i = -1

2i*3i=-6

now if they meant complex numbers the answer is still no

(2+4i)(2-4i) = 4-8i+8i-16 = -12
3 0
2 years ago
HELP... <br> Find the Product<br> -8b(2-5b)
IrinaVladis [17]

Answer:

-16b+40b^2

Step-by-step explanation:

-8b*2=-16b

(-8b)(-5b)=40b^2

3 0
2 years ago
Read 2 more answers
A set of data was published in the fall 2019 Phi Kappa Phi Forum regarding the performance of Major League Baseball (MLB) umpire
const2013 [10]

Answer:

The answer is "1.30".

Step-by-step explanation:

Proportion of population=0.20

Ratio sample=\frac{70}{300}=\frac{7}{30}=0.23

Statistics of the test:

\to Z=\frac{(0.23-0.2)}{\sqrt{(\frac{0.2\times(1-0.2)}{300})}}\\\\

       =1.30

6 0
2 years ago
Find the 10th term of the sequence 1,10,19,28,...
Rainbow [258]
For the first one the nth term is 9n - 8 so the 10th term is 9x10 - 8 = 90-8 = 82

For the second one the nth term is ⅓n + ⅓ so the 11th term is ⅓x11 +⅓ = 3.9999 = 4
5 0
3 years ago
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