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3 years ago

Find the diameter of the object. 2 in. diameter:

Mathematics

2 answers:

Softa [21]3 years ago

5 0

Answer:

4 inches

Step-by-step explanation:

The radius is the line from the center of the circle to the edge. We can assume the black line on the orange is the radius.

We want to find the diameter. The diameter is twice the radius, or

d=2r

We know the radius is 2, so we can substitute that in for r

d=2*2

Multiply

d=4

So, the diameter is 4 inches

Sindrei [870]3 years ago

3 0

Answer:

4 in is the diameter

Step-by-step explanation:

The radius is 2 in, it is half way across, and 2 radius is equal to one diameter.

The diameter is the entire way across the circle (crossing through the center point). In this case the diameter 4 in.

hope this helps :) pleas mark brainliest if you see fit :)

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Read 2 more answers

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:

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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:

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

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