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uysha [10]
3 years ago
12

Two circles have areas of 16π and 25π. Find the ratio of their circumferences.

Mathematics
1 answer:
adelina 88 [10]3 years ago
5 0

Answer:

4:5

Step-by-step explanation:

A=πr^{2}

16π =πr^{2}

r^2 = 16 & r^2 = 25

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6) The sum of three consecutive even numbers is 96.<br> What is the smallest of the three numbers ?
Neko [114]

Answer:

30

Step-by-step explanation:

Consecutive even numbers can be written as X,X+2,X+4,X+6, and so forth. You only have three consecutive even numbers that equal 96, so write the following equation:

X+X+2+X+4=96

1) Combine alike terms:

3X+6=96

2) Subtract 6 from both sides:

3X=90

3) Divide both sides by 3:

X=30

Now plug in 30 for each of the consecutive even numbers' equations:

X=30

X+2=32

X+4=34

The smallest of these three numbers is 30, therefore the answer is 30!

6 0
4 years ago
3/2+t=1/2 how to slove
Nataly [62]
First, let's isolate t! Make sure to change your signs when you change from one side of the equation to the other. 

3/2 + t = 1/2
          t = 1/2 - 3/2

Now, we can solve for t!
          
          t = 1/2 - 3/2
          t = -2/2
          t = -1

Hope this helps!
Message me if you have any questions :)
8 0
4 years ago
Read 2 more answers
0.00147 in standard form
kondaur [170]

Answer:

1.47 times 10 to the power of -3

Step-by-step explanation:

8th grade math I'm guessing lol

7 0
3 years ago
Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?
WITCHER [35]
<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0, 
</span><span>kf(x) = -x², a= -1<0  
so the answer is </span><span>B.kf(x) </span><span>

</span>
5 0
3 years ago
Nine less than three times a number is greater than forty
pentagon [3]
Start with an equation.
Nine less... so -9
3 times a number = 3x
Greater than 40 is >40

So put together is 3x-9>40
When solving I imaging the greater than sign as an equal sign. Less confusing.
3x-9=40
3x=49
x>49/3
7 0
3 years ago
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