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notka56 [123]
3 years ago
9

If the ratio between the radii of the two spheres is 3:7, what is the ratio of their volumes?

Mathematics
1 answer:
elena-s [515]3 years ago
4 0
Given that the dilation factor or scale factor between the two spheres is equal to 3:7, the ratio between their volumes is calculated by cubing the numbers in the ratio. That is,
                     3³:7³
This operation will give us an answer of 27:343
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Which is expression is equivalent to 4b
GalinKa [24]

Answer: b(4) or 4(b)

Step-by-step explanation:

5 0
3 years ago
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a. choose a credit card balance between $5,000 and $20,000, using a 16% APR (the current average credit card interest rate). b.
Scrat [10]

Answer:

344543

Step-by-step explanation:

88-3x=23y

6 0
3 years ago
The concession stand at the local high school sells pretzels and lemonade. The total cost of two pretzels and a lemonade is $5.7
Yuliya22 [10]
<span>$2.35

Working
Let p represent the cost of pretzels and L the cost of a lemonade. 
From the second paragraph,
2p+ L= 5.75

From the equation above, the cost of a pretzel p can be expressed as:
2p= 5.75 - L
p= 5.75/2 - l/2
The cost of two lemonades exceeds that of  a pretzel by 0.25:
2 L= 5.75/2 -L/2+0.25

Solving this gives:
L=1.05

Then replace the value of L in </span><span>p= 5.75/2 - L/2
</span><span>This gives the value of a pretzel.




 </span>
4 0
3 years ago
What is the solution to the system<br><br>C= ?<br>D= ?<br><br>​
AnnZ [28]

Answer:

c=29/20

d=13/5

Step-by-step explanation:

4c+2d=11   A

7d=82-44c  7d+44c=82     B

The first equation multiply by 11

and we get 44c+22d=121   C

C-B=44c+22d-7d-44c=39

15d=39

d=39/15=13/5

so c= 29/20

7 0
3 years ago
A line passes through the points (−200, 2.04 × 10^4) and (100, −9.6 × 10^3). Find the value of y when x=300. Write your answer i
MakcuM [25]

Answer:

y = -29.6 x 10³

Step-by-step explanation:

First of all, we know that the formula to calculate the slope between two points is equal is given by;

m = {y2-y1}/{x2-x1}

Now, we have the coordinates as;

(−200, 2.04 × 10⁴) and (100, −9.6 × 10³)

Thus; rearranging the first one, we now have;

(−200, 20.4 × 10³) and (100, −9.6 × 10³)

Thus;

m = {(-9.6 x 10³) - (20.4 x 10³)}/{100 - (-200)}

m = (-30 x 10³)/300

m = -100

Now, let's find the equation of the line into point slope form;

y - y1 = m(x - x1)

We have (x1, y1) = (−200, 2.04 × 10⁴)

Thus;

y - (2.04 x 10⁴) = -100(x - (-200))

y - (2.04 x 10⁴) = -100(x + 200)

We want to find the value of y when x=300

Thus;

y - (2.04 x 10⁴) = -100(300 + 200)

y - 20400 = -100(500)

y - 20400 = -50000

y = 20400 - 50000

y = -29,600 = -29.6 x 10³

6 0
3 years ago
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