MATHEMATICS MIDDLE SCHOOL

Two circles have the same radius. Is the combined area of the two circles the same as the area of a circle with twice the radius? Explain.

Answers

Answer 1
Answer: ok so area=pir^2

2 circles with same area=2pir^2

circle with 2 times radius=pi(2r)^2=pi4r^2=4pir^2

is 2 circles with same area equal to circle with 2 times radius?
is 2pir^2=4pir^2?
is 2=4?
no


therfor the answer is no

it is because the radius is squaered so the doubled gets doubled makng it quadrupuled when the first one only gets doubled

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What is the answer to 3/5 x 10/21 in simplest form???

Answers

The product of two fractions is 2/7.

What is the product of two fractions?

The product of two fractions is the product of the numerators and the product of the denominators.

Product of two fractions = Product of their numerators / Product of their denominators

The given expression is 3/5 × 10/21.

Now, (3×10)/(5×21)

= (1×2)/(1×7)

= 2/7

Therefore, the product of two fractions is 2/7.

To learn more about the product of two fractions visit:

brainly.com/question/7335118.

#SPJ2
First, let's make this easier. Think of 3/5 multiplied by 10/21 as different multiplication problems. First, you should multiply the numerators then the denominators. But before we actually multiply, we can cross simplify.

3       10
_        _ 
5        21    3 divided by 3= 1. 21 divided by 3 is 7. Then you can cross simplify                   again. 5 divided by 5 is 1. 10 divided by 5 is 2. So your                                   multiplication problem has now been put into simpler terms and                       smaller numbers. This makes it easier to solve so you don't have                     to multiply such big numbers together. 


Your new much simpler multiplication problem is 1/1 multiplied by 2/7. Your answer is 2/7 and it has been put into simplest form. 

(Sorry the explanation is so long. Hope this helps!)

How can you tell that a fraction is a unit fraction? (can't any fraction be a unit fraction?)

Answers

Because a unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer.

Answer:

Uni Means one. So i think u can i hopes this helped a little bit :)

Step-by-step explanation:

I really don't know where to go with this. I just need help with it fast. because idk what I'm doing I'm giving max points.

Answers

y=ax+b
a... slope
b... interception on the line y

you get the equation y=-1/2 *x + 12

This is what i would put Because they have given you slope and y intercept .

Equation of line format

Y=mx+b


Where slope is "m" : -1/2

Where Y-intercept is "b": 12


Therefore,


Y= -1/2x+12

Need help with this question.

Answers

13.55 / 5 = 2.71. 2.71 x 8 = 21.68
the answer is c.) $21.68

What is 0.4^-2 (0.4 to the power of -2)?

Answers

(4/10)^-2 = (2/5)^-2  = (5/2)^2 = 25/4 = 6.25

Answer: 39.0625

Step-by-step explanation: (0.4^(-2))*(0.4^(-2))

A table costs $50 more than a chair. The cost of 6 chairs and 1 table is $750. The equation 6x + x + 50 = 750, where x is the cost of one chair, represents this situation. Plug in the values from the set {50, 100, 150} to find the correct value of x.The value of x that makes the equation true is . So, the cost of a chair is and the cost of a table is .

Answers

Answer:

The cost of a chair is $100

The cost of a table is $150

Step-by-step explanation:

Answer:

the cost of the chair is 100

the cost of the table is 150

the value of x is 100

Step-by-step explanation:
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