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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

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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Dimensions of a Box A large plywood box has a volume of . Its length is ft greater than its height, and its width is ft less tha

cupoosta [38]

Answer:

Few things are missing, they are volume of the box is 180 feet cube. Length is 9 feet greater than its height, and weight is 4 feet less than its height.

Step-by-step explanation:

Given, the volume of the box, V = 180 feet cube

Let the height of the box, h = x feet

Therefore, length is, l = ( 9+x ) feet

And width is, b = ( x-4) feet

so volume of the box is

V = l x b x h

$180= (x+9) \times (x-4) \times (x)$

$x^3 +5x^2-36x -180 =0$

Factorizing we get

(x+5)(x-6)(x+6)=0

Therefore,

x = -5, -6, 6

Now since the height of the box cannot be negative, so taking the positive value of x, we get

Height of the box, h = x = 6 feet

Length , l = ( 9+x ) = 9+6 = 15 feet

Width , b = ( x-4) = 6-4 = 2 feet

8 0

3 years ago

Suppose an angle α is drawn in standard position. In each case, use the information to determine what quadrant α is in.

cupoosta [38]

Since <span> sin(α) > 0 and cos(α) > 0
so </span><span>α is IN THE FIRST QUADRANT (I)</span>

4 0

3 years ago

What is the equation for the graph shown below?

ValentinkaMS [17]

Answer: D

Explanation:

Since we don't know the y-value of the vertex, let's do this an easy way: plugging in.

Let's use the y intercept since that would be the easiest. Since x=0, the terms with x cancel, and you will get a leading result of -5

A) results in 2, so eliminate it

B) results in -2, so eliminate it

C) results in 5, so eliminate it

D) results in -5, so keep it

Since D was the only one that worked, that is our correct answer.

4 0

2 years ago

If carpet cost $8 per square foot. How much money will it cost to put new carpet in all the rooms in the house?

Stolb23 [73]

How many feet is the room

6 0

2 years ago

Kori bought 56 boxes of tiles from the home improvement store, which was es 4/7 of the total number of boxes that they had. How

dimaraw [331]

Answer:

98 boxes

Step-by-step explanation:

If 56 is $\frac{4}{7}$ of the total, we can set up an equation like this:

$56=\frac{4}{7}*T$

Where T is the total number of boxes.

Solving for T gives us the answer:

$56=\frac{4}{7}T\\T=\frac{56}{\frac{4}{7}}\\T=56*\frac{7}{4}\\T=98$

There were 98 boxes in total.

5 0

3 years ago

Read 2 more answers