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2 years ago

What is the radius and diameter of the following circle? Radius = cm diameter= cm

Mathematics

1 answer:

Nadya [2.5K]2 years ago

3 0

The value of diameter and radius of circle is 7 cm and 3.5cm.

According to the statement

we have given that the a figure of circle and we have to find the radius and the diameter of the circle.

So, We know that the

The radius of a circle runs from its center to its edge, the diameter runs from edge to edge and cuts through the center.

Here from the figure it is clear that the

Diameter of circle = 7cm

and the radius of circle we have to find

So,

Radius of circle = Diameter /2

Substitute the values in it then

Radius of circle = 7cm /2

Radius of circle = 3.5 cm.

So, The value of diameter and radius of circle is 7 cm and 3.5cm.

Learn more about the diameter and radius of circle here

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I need help with this math problem please

larisa [96]

Use this graphing app that assists you with problems like these!

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4 years ago

Evaluate the following expression, when x=-2<br><br>2x^2+4x-3<br><br>A) 3<br>B) 3<br>C) -19<br>D) 9

pishuonlain [190]

Answer:

-3

<h3>explanation;..!!^=^</h3>

4 0

3 years ago

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Is your estimate larger or smaller than the actual number of liters in a gallon? Explain how you know.

SCORPION-xisa [38]

Question:

There are 33.8 fluid ounces in a litre. There are 128 fluid ounces in a gallon. About how many litres are in a gallon?

Is your estimate larger or smaller than the actual number of litres in a gallon? Explain how you know

Answer:

It is larger

Step-by-step explanation:

Given

$33.8\ fl\ oz = 1\ litre$

$128\ fl\ oz = 1\ gallon$

Required

Estimate number of litres in a gallon

$33.8\ fl\ oz = 1\ litre$

$128\ fl\ oz = 1\ gallon$

Cross Multiply

$128\ fl\ oz * 1\ litre = 33.8\ fl\ oz * 1\ gallon$

$128 * 1\ litre = 33.8* 1\ gallon$

Divide both sides by 33.8

$\frac{128 * 1\ litre}{33.8} = \frac{33.8* 1\ gallon}{33.8}$

$\frac{128 * 1\ litre}{33.8} = 1\ gallon$

$3.78698224852\ litre = 1\ gallon$

Approximate

$3.787\ litres = 1\ gallon$

The estimate is larger than the actual litres to gallon conversion because, in standard units of conversion;

$3.785\ litres = 1\ gallon$

6 0

3 years ago

A manufacturing company builds construction machinery. It sells 10 machines for $18,100 and 20 machines for $26,600. Which equat

Anon25 [30]

<h3>Answer:</h3>

D. R(x) = 850x +9600

<h3>Step-by-step explanation:</h3>

Selling 10 more machines increased revenue from $18100 to $26600, an increase of ...

... $26,600 -18,100 = $8,500

That is, the revenue increased by $8500/10 = $850 per machine.

Only one answer choice has this number in it:

... D. R(x) = 850x+9600

_____

<em>Check</em>

R(10) = 850·10 +9600 = 8500 +9600 = 18,100 . . . . OK

R(20) = 850·20 +9600 = 17000 +9600 = 26,600 . . . . OK

_____

<em>Comment on answer selection</em>

On multiple-choice questions, it is rarely necessary to work out the solution to the problem completely. Usually, it is sufficient to find the one number that discriminates between correct and incorrect answers.

In real life, answers are rarely multiple-choice. You are required to work the problem completely and to figure out how to tell if your answer is correct.

Here, we have worked the problem far enough to find the slope, the amount by which revenue increases when sales increases by 1 unit. The intercept can be found different ways. One of them is to see what number makes the revenue match for one of the "x" values:

... R(10) = 850·10 +b = 18100

... b = 18100 -8500 = 9600

so ...

... R(x) = 850x +9600

We can check this answer by computing R(20), as we have above.

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3 years ago

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Evaluate c-2 when c=7

Luba_88 [7]

5 is the answer. Hope this helps.

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3 years ago

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