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timofeeve [1]
3 years ago
15

On a school field​ trip, the bus travel 21 miles in 30 minutes. Find the speed of the bus in miles per hour. Use the equation de

quals=​rt, where d is​ distance, r is​ rate, and t is time. The speed of the bus is miles per hour.
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
3 0
D=rt translates into 21miles=(r)30minutes
If you don't have to show your work the answers 42MPH
If you do, comment and I will write it out
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The number of letters in Stephanie's full name is sixteen less than twice the number of letters in Amy's full name. If the numbe
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Answer:

19 letters

Step-by-step explanation:

Suppose Number of Amy's full name letters = X

               Number of Stephanie's full name letters = Y

Now, according to given condition that ''number of letters in Stephanie's full name is sixteen less than twice the number of letters in Amy's full name'',

Equation 1 becomes

Y = 2X-16

Now, according to second condition, product of their names' letter is 418. So,

Equation 2 becomes

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X = (Y+16)/2

Putting this value in equation 2 we get,

{(Y+16)/2}*Y = 418,

By simplifying this equation we get a quadritic equation

(Y^2)+16Y-836=0

By breaking middle term (You can use quadratic formula here as well)

(Y^2)+38Y-22Y-836=0

Y(Y+38)-22(Y+38)=0

(Y-22)(Y+38)=0

At this stage we have two values for Y,

Y=22, or Y=-38

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Y=22,

So X=(Y+16)/2

X=19

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3 years ago
Subtract -6x2 – 2x + 5 from 2.x2 + 8.
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3 years ago
LCM of 4, 6, 10, and 12
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Answer:

360 is the LCM of 4,6,10 and 12

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Answer:

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Iliana is painting a picture. She has green, red, yellow, purple, orange, and blue paint. She wants her painting to have four di
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<h3>How many ways can she picks four colours if green must be there?</h3>

It follows from the task that there are 6 colours in total that she could pick from.

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