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Ket [755]
3 years ago
8

Courtney drove 48 miles to her friends house she got there in a hour and 12 minutes how fast was she driving on average

Mathematics
2 answers:
Aleks [24]3 years ago
8 0

Answer:

Yea she drove

Step-by-step explanation:

pshichka [43]3 years ago
6 0

Answer:

40 mph

Step-by-step explanation:

s=vt

v = s/t

putt values

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La finca de Federico tiene tiene un área de 576 m2, En ella ha sembrado naranja y café, 3/8 de la finca están sembrados de naran
Vanyuwa [196]

Answer:

El área de la finca que está sembrada por café es 360 m².

Step-by-step explanation:

La finca de Federico tiene tiene un área de 576 m². \frac{3}{8} de la finca están sembrados de naranjas. Entonces, el área de la finca que está sembrada por naranjas se calcula mediante:

576 m²* \frac{3}{8} = 216 m²

Sabiendo que el resto de la finca esta sembrada de café, esta área se calcula mediante la diferencia del área total de la finca y el área sembrada por naranjas:

576 m² - 216 m²= 360 m²

<u><em>El área de la finca que está sembrada por café es 360 m².</em></u>

6 0
3 years ago
I need help pleaseeeee
Maksim231197 [3]

Answer:

D)

Step-by-step explanation:

49 degrees + 86 degrees = 135 degrees

line QT=180 degrees

135 degrees + 45 degrees = 180 degrees

8 0
3 years ago
Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial:
Ksenya-84 [330]

\frac{4}{9}b^2 + 0.4bc + 0.09c^2 = \frac{4}{9}b^2 + \frac{4}{10}bc  + \frac{9}{100}c^2 = (\frac{2}{3}b + \frac{3}{10}c)^2

7 0
3 years ago
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate
Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

\sigma^2 = 484\\\sigma =\sqrt{484} = 22

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get

E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0
3 years ago
In a right triangular prism, the area of the triangular base is 50 square feet. The height of the prism is 12 feet. What is the
weeeeeb [17]

Answer: 600 ft.

Step-by-step explanation:

The height is 12, and the base is 50. So V=ABh=50·12=600ft³, just plug in the numbers.

6 0
3 years ago
Read 2 more answers
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