3 years ago

Which expression is a factor of 21x2 + 13x − 20?

Mathematics

1 answer:

seraphim [82]3 years ago

6 0

Answer: A............

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The answer would be 0.83 repeated decmal

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

What do we get when we break apart 46+26 using place value?

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3 years ago

if it would take billy an hour to race over to his girlfriends house and two hours if he went 20 miles per hour slower how far a

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Recall your d = rt, distance = rate * time.

now, let's say she lives "d" miles away, and so if Billy goes say at "r" mph fast to her house, he gets there in 1hr.

now, if he goes 20 mph slower, namely " r - 20 " mph, he gets there in 2 hours, same "d" miles.

$\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
\textit{Billy}&d&r&1\\
\textit{slower Billy}&d&r-20&2
\end{array}
\\\\\\
\begin{cases}
d=r(1)\implies d=\boxed{r}\\
d=2(r-20)\\
----------\\
d=2\left( \boxed{d}-20 \right)
\end{cases}
\\\\\\
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4 years ago

What is the volume of the square pyramid?

Lubov Fominskaja [6]

The volume of the square pyramid is 147 centimeters.

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3 years ago

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