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Mathematics

2 answers:

Pavlova-9 [17]2 years ago

5 0

Answer:

Step-by-step explanation:

-37/60

sertanlavr [38]2 years ago

3 0

Answer:

what does is say, there a bit small

Step-by-step explanation:

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The value of y is directly proportional to the value of x.If y=35 when x=140, what is the value of y when x=70

Elodia [21]

Y varies x
Invite the constant
y = kx
Kx/x = y/x
K = y/x
Slot in the values
K = 35/140
= 1/4 or 0.25

What is the value of y when x=70
y=kx
y = 35/140 x 70/1
y = 35/2
y = 17 1/2 or 17.5

3 0

3 years ago

Using synthetic division, what is the quotient (2x3 − 3x − 10) ÷ (x − 2)?

melamori03 [73]

Answer:

(2x3 − 3x − 10) ÷ (x − 2) = ( x-2)

Step-by-step explanation:

4 0

2 years ago

Please help: linear algebra problem. (Linear combinations)

DochEvi [55]

Answer:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

This tells us that:

$A=\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right]$

$b=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

Step-by-step explanation:

So we are saying we have scalars, c and d, such that:

$c\left[\begin{array}{ccc}5\\5\\ 3\end{array}\right]+d\left[\begin{array}{ccc}7\\-8\\-9\end{array}\right]=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$ .

So we want to find a way to express this as:

Ax=b where x is the scalar vector, $\left[\begin{array}{ccc}c\\d\end{array}\right]$ .

So we can write this as:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

3 0

3 years ago

How many terms will the following expression have once it is simplified?

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

<em>Let's multiply this out and combine like terms:</em>

$3x(x+1)+x\\=3x^2+3x+x\\=3x^2+4x$