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crimeas [40]
3 years ago
9

The formula for the area of a circle is a= 2Ïr^2. how does the value for a change when r increases

Mathematics
1 answer:
ivann1987 [24]3 years ago
6 0
The radius is half the diameter of the circle.  If the radius gets larger then the whole circle grows.  When the circle gets larger, the area gets larger too.
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8.
Kazeer [188]

Answer:

C. quadratic function; quadratic term: −6x^2; linear term: −17x; constant term: −12

Step-by-step explanation:

Answer:

quadratic function; quadratic term: −6x² ; linear term: −17x; constant term: −12

Step-by-step explanation:

The given function is

We need to expand the RHS to get:

We can see that the degree of this polynomial function is 2 and hence it is a quadratic function.

The quadratic term is -6x²

The linear term is -17x

The constant term is -12

6 0
2 years ago
Kyra has a rock collection. When she puts her rocks into 2 equal plies, there are no rocks left over. When she puts her rocks in
Nat2105 [25]

Step-by-step explanation:

According to this description we need a number that can be divided by 2,3 and 4 since the amount of rocks can be described by a natural number. However if a number is divided by 4 it is divided by 2 as well since 2*2=4.

\frac{x}{4}  =  \alpha  \\  \frac{x}{2}  = 2 \alpha

If α is a natural number then 2*α is a natural number as well as the product of two natural numbers.

Which means that we need a number devided by 3 and 4.

The smallest number that fulfills this demand is 3*4=12.

Also any product of 12 with any natural number can be devided by 3, 4 and 2.

If the exercise asks for the numbers that are divided only by 2,3 and 4 these are:

{3}^{ \alpha }  \times 12 \: and \:  {4}^{ \alpha }  \times 12 \:  \\ where \:  \alpha  \: belongs \: to \: the \: set \: of \: all \: \\ natural \: numbers

8 0
2 years ago
Cherries cost $4.99 per pound. If Lacey buys 3.5 pounds, how much will she pay for the cherries?
Vladimir79 [104]
It would $17.47. if you times $4.99 by 3.5 pounds of cherries then your answer will be $17.47
4 0
3 years ago
Read 2 more answers
Amir is sorting his stamp collection. He has made a chart of what countries the stamps are from
natulia [17]

Answer:

Step-by-step explanation:

Given that Amir is sorting his stamp collection. He has made a chart of what countries the stamps are from

He got results as

France 1/3  

Morocco 5/12  

Spain 1/6

To find out what fraction of Amir's stamps are from France, Morocco, or Spain, we have to simply add the three as there is common element between any two pairs

Hence answer is

\frac{1}{3} +\frac{5}{12} +\frac{1}{6}\\ =\frac{11}{12}

8 0
3 years ago
Read 2 more answers
Ray knows that the m∠3 = m∠6. Which of the following conclusions can Ray make based on the given information? Lines l and m are
Slav-nsk [51]

If two lines are intersected by a transversal, and the alternate interior angles are equal, then the lines are parallel.

Conversely, if two lines are parallel, then the alternate interior angles formed by the transversal are equal.

So, Ray can made the conclusion that l and m are parallel because alternate interior angles are equal since m∠3 = m∠6.


4 0
3 years ago
Read 2 more answers
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