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3 years ago

2 x (7-4)^2 - (8 x 2 + 2)/2 = (the x indicates multiply)

Mathematics

1 answer:

alexdok [17]3 years ago

5 0

2 × 3² - 18/2
2 × 9 - 9
18 - 9
= 9
hopefully this is corrrct ,^_^

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Mike hiked to a lake in 4.5 hours at an average rate of 2

aleksandrvk [35]

Answer:

It took Pedro <em>3.81 hours</em> to reach the lake.

Step-by-step explanation:

Time taken by Mike to hike a lake = 4.5 hours

Average rate of Mike while hiking the lake = $2\frac{1}{5}\ miles/hr$

Formula for distance can be seen as:

$Distance = Speed\times Time$

Distance traveled by Mike = $4.5 \times 2\frac{1}{5} = 4.5\times \frac{11}{5} = 9.9\ miles$

Rate of Pedro while hiking the same distance = $2\frac{3}{5}\ miles/hr = \frac{13}{5}\ miles/hr$

Given that, Pedro also travels the same distance.

And we have to find the Time.

$Time = \dfrac{Distance}{Speed}$

$Time = \dfrac{9.9}{\frac{13}{5}}\\\Rightarrow Time = \dfrac{9.9\times 5}{13} = \bold{3.81\ hours}$

It took Pedro <em>3.81 hours</em> to reach the lake.

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2 years ago

Please solve these questions on the topic of exponents

galina1969 [7]

Answer/Step-by-step explanation:

Recall: $x^{-a} = \frac{1}{x^a}$

a. $4^{-3} = \frac{1}{4^3} = \frac{1}{64}$

b. $13^{-2} = \frac{1}{13^2} = \frac{1}{169}$

c. $(-3)^{-2} = \frac{1}{-3^2} = \frac{1}{9}$

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2 years ago

5 friends share 11 cookies. What fraction of a cookie will each of the 5 friends receive?

sukhopar [10]

Five goes into 11, two times. So each friend gets two cookies and 1/5 of the last one. So the answer is 2 and
1/5

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2 years ago

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Find the value of p.

Rainbow [258]

P=1
7p + 13=20
-13 | -13
7/7
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2 years ago

Two families are vacationing together, driving in separate cars. The Harris family averages 40 mph, leaving Hometown 12 minutes

andrey2020 [161]

I believe, if I'm not correct but I think the answer would be 8 minutes or less.. Considering the fact that the Harris Family left 12 minutes ahead and the Arlen family is Averaging 55 MPH.. Too the speed that the Arlen's are going make the time for them to catch up to the harris's shorter. The Arlen's are going 15 mph faster sooo.. Yeah.. Tell em if this helps! :D

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2 years ago

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