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Law Incorporation [45]
3 years ago
5

Jared wants a quick trip by bus or train to New York. The bus’s average speed is shown in the graph. The train’s average speed i

s shown in the table. Which form of transportation travels a greater distance per hour?
Mathematics
2 answers:
Lelechka [254]3 years ago
4 0

The bus travels 15 miles more per hour than the train.

marshall27 [118]3 years ago
3 0

Answer:

The bus travels 15 miles more per hour than the train.

TTM ;)

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What is the value of v
const2013 [10]

Answer:

v=9

Step-by-step explanation:

12v-44+6v+23+15v-9+v+30+6v=360

40v=360

v=9

6 0
3 years ago
What is the sum of 20x^2-10x-30
ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

<u><em>The correct question is</em></u>

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

ax^{2} +bx+c=0

The sum of the roots is equal to

-\frac{b} {a}

in this problem we have

20x^{2} -10x-30=0  

so

a=20\\b=-10\\c=-30

substitute

-\frac{(-10)} {20}=0.5

<u><em>Verify</em></u>

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

a=20\\b=-10\\c=-30

substitute

x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}

x=\frac{10\pm\sqrt{2,500}} {40}

x=\frac{10\pm50} {40}

x=\frac{10+50} {40}=1.5

x=\frac{10-50} {40}=-1

The roots are x=-1 and x=1.5

The sum of the roots are

-1+1.5=0.5 ----> is ok

5 0
3 years ago
Jeff uses 3 fifth-size strips to mode 3/5. He wants to use tenth-size strips to model an equivalent fraction. How many tenth-siz
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Wouldn't it just be 6 tenth sized for 6/10
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Fully simplify ( 3 x + y 4 ) 2
Ainat [17]

Answer:

2/4-5

Step-by-step explanation:

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How do I solve for the quadratic function?
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Aw you put the numbers in so a b c then you solve
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