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professor190 [17]
3 years ago
8

Lewis walked 9/10 of a mile. His friend walked 2/5 of that with him. How many Miles did his friend walk with him?

Mathematics
1 answer:
FrozenT [24]3 years ago
5 0

Answer:

36/100 of a mile

Step-by-step explanation:

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write a compound inequality that represents the situation. all real numbers at least –6 and at most 3 a. –6 < x ≤ 3 b. –6 &lt
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<span>All real numbers at least –6 and at most 3 is given by: -6 \leq x \leq 3</span>
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A hamster wheel has a diameter of 8.5 in. How many inches does the hamster run in one revolution? Use 3.14 to approximate for π
Ahat [919]

As hamster wheel is circular so for revolution we will find the circumference.

Diameter of the Hamster wheel = 8.5 in

One revolution of the wheel = circumference of the wheel

Circumference = π × d

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So, Circumference = 3.14 × 8.5

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So in one revolution the hamster wheel travels a distance of 26.69 in

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Which of the following numbers could be the sides of a right triangle. A)8,15,17. B)6,8,12 C)9,11,21 D)4,13,16
ArbitrLikvidat [17]

Answer:

A) 8, 15, 17.

Step-by-step explanation:

Right triangle obey the Pythagorean theorem. Thus, we choose the two smaller numbers (being the cathetus) and if after applying the P. Theorem we get the biggest of each option  (the hypotenuse) that means that those numbers could be the sides of a right triangle.

The Pythagorean theorem states that: a^2+b^2=c^2

Thus:

\sqrt{a^2+b^2}=c

Option A:

\sqrt{8^2+15^2}=17 → 17 = 17 OK!

Option B:

\sqrt{6^2+8^2}  = 10 → 10 ≠ 12 NO

Option C:

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Option D:

\sqrt{4^2+13^2} = \sqrt{185} → \sqrt{185} ≠ 16 NO

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3 years ago
The histograms below show the heights (in meters) of the tallest buildings in China and the United States.
gregori [183]

Answer:

A and B

Step-by-step explanation:

This is correct on khan academy!

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ad-work [718]

You can see that the term -6y appears in both equations. In this cases, we can leverage this peculiarity and subtract the two equations to get rid of the repeated term. So, if we subtract the first equation from the second, we have

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Now that we know the value of x, we can substitute in any of the equation to deduce the value of y: if we use the first equation, for example, we have

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