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raketka [301]
3 years ago
12

A cube of wood measures 9 cm on a side and weighs 28 grams what is the density of the cube of wood

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

Answer:

25 grams

Step-by-step explanation:

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How many degrees does the earth revolve on its axis each hour? How many radians?
mestny [16]

Answer:

The earth will revolve 15° and 0.0833 radian in 1 hour              

Step-by-step explanation:

We know that earth revolve one round on its axis 24 hour

We know that 1 round = 360°

So earth will revolve 360° in 24 hour

So earth will revolve \frac{360}{24}=15^{\circ} in 1 hour

Now we have to find the revolution in radian

So 15^{\circ}=15\times \frac{\pi }{180}=0.0833\pi

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4 years ago
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Answer:

2/8

Step-by-step explanation:

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3 years ago
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tom takes a taxi to work. There is an initial fee of $2.20. Each mile is calculated at $1.50. If Tom's final cost for the taxi i
Fudgin [204]

Fee for distance = total fee - initial fee = 12.70-2.20 = $10.50

Now, for 1 mile = $1.50

for x miles = 10.50/1.50 = 7

So, tom travel 7 miles.

5 0
4 years ago
An item is regularly priced at $70. Keiko bought it on sale for 80% off the regular price. How much did Keiko pay? $
pantera1 [17]

Answer:

$14

Step-by-step explanation:

80% of $70 is $14, saving him $56

8 0
2 years ago
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y = 2x squared + 5x -3 can be written in the form y= 2( x+a) squared + b . Find the value of a and the value of b.
Elan Coil [88]

General vertex form:

y = m(x − a)² + b  \: with  \: vertex \:  at \:  (a, b)

Given :

y = 2x² + 5x  - 3

Extract "spread factor" m

y = 2( x² +  \frac{5}{2} x) - 3

Complete the square

y = 2(x²  +  \frac{5}{2}x + ( \frac{5}{4})²) - 3

- 2( \frac{5}{4})²

Write as a squared binomial and simplify the constant

y = 2(x +  \frac{5}{4})² - 6 \frac{1}{8}

Re-write to match signs of standard general form:

y = 2(x - ( -  \frac{5}{4}))² \:  + ( - 6 \frac{1}{8})

3 0
2 years ago
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