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3 years ago

Shane rode his bike for 2 hours and traveled 12 miles. At this rate how long would it take him to travel 22 miles?

Mathematics

2 answers:

Fiesta28 [93]3 years ago

7 0

22 miles at 6mph would be ~3.66666 hours or

3 hours and 40 minutes

ella [17]3 years ago

3 0

It would take him about 3.67 hrs.

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Show work please !!!

aleksklad [387]

Answer:

512x⁴y¹²

Step-by-step explanation:

its a cube so length x width x height

8xy⁴ times 8xy⁴ times 8xy⁴ is 512x³y¹²

5 0

2 years ago

A ladder reaches the top of a 20 foot building. the ladder is 4.5 feet away from the building. how long is the ladder?

KATRIN_1 [288]

Answer:

Step-by-step explanation:

do that with pithagoras:

20² + 4,5² = x²

400 + 20,25 = x²

420,25 = x²

x = $\sqrt{420,25}$

x ~ 20,5

Letter C: 20,5 feet

4 0

2 years ago

Which of the following expressions is equivalent to a3 + b3?

lubasha [3.4K]

ANSWER
${a}^{3} + {b}^{3} = (a + b)( {a}^{2 } - ab + {b}^{2} )$

EXPLANATION

To find the expression that is equivalent to
${a}^{3} + {b}^{3}$
we must first expand
${(a + b)}^{3}$
Then we rearrange to find the required expression.

So let's get started.

${(a + b)}^{3} = (a + b) {(a + b)}^{2}$

We expand the parenthesis on the right hand side to get,

${(a + b)}^{3} = (a + b) ( {a}^{2} + 2ab + {b}^{2} )$

We expand again to obtain,

${(a + b)}^{3} = {a}^{3} + 3 {a}^{2}b + 3a {b}^{2} + {b}^{3}$

Let us group the cubed terms on the right hand side to get,

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3 {a}^{2}b + 3a {b}^{2}$

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab (a+ b)$

We make the cubed terms the subject,

${(a + b)}^{3} - 3ab (a+ b) = {a}^{3} + {b}^{3}$

We factor to get,

$(a + b)({(a + b)}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We expand the bracket on the left hand side to get,

$(a + b)( {a}^{2} + 2ab + {b}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We finally simplify to get,

$(a + b)( {a}^{2} - ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

5 0

2 years ago

Read 2 more answers

if i earned 250$ a week and put 25% away into savings, how much would i have in 3 years in my savings?

OlgaM077 [116]

Answer:

187.5 is what u have left each week after takign away the 25%.

Step-by-step explanation:

Hope this helps? :)

7 0

2 years ago

An airplane flying from los angeles to NYC losess both engines and all steering controols at 10,000 ft of altatude it falls at a

liubo4ka [24]

Answer:

20 min i hope this answers helps u

Step-by-step explanation:

10000÷500=20

8 0

2 years ago