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REY [17]
3 years ago
9

Question 18 Write an equation that expresses the following relationship. varies directly with and inversely with In your equatio

n, use as the constant of proportionality.
Mathematics
1 answer:
Svetach [21]3 years ago
4 0

Answer:

d=\frac{kw}{p^2 }

where k is the constant of proportionality.

Step-by-step explanation:

The original question is

d varies directly with w and inversely with the square of p

k is always the constant of proportionality

d varies directly with x so we multiply 'w' in the numerator

for inversely proportional we put the square of  p in the denominator

so the equation becomes

d=\frac{kw}{p^2 }

where k is the constant of proportionality.

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6=x+2/3 Please help me
vekshin1

Answer: x=5.33333333333

Step-by-step explanation:

6=x+2/3

We simplify the equation to the form, which is simple to understand  

6=x+2/3

Simplifying:

6=x + 0.666666666667

We move all terms containing x to the left and all other terms to the right.  

-1x=0.666666666667-6

We simplify left and right side of the equation.  

-1x=-5.33333333333

We divide both sides of the equation by -01 to get x.  

x=5.33333333333

8 0
4 years ago
Read 2 more answers
Birth weights are normally distributed with a mean of 3419 g and a standard deviation of 494 g. If a hospital plans to set up sp
Bas_tet [7]
Let X represent a random variable representing the birth weights of babies, and let x be the required cut-off, then
P(X < x) = 0.02
P(z < (x - 3419)/494) = 0.02
1 - P(z < (3419 - x)/494) = 0.02
P(z < (3419 - x)/494) = 1 - 0.02 = 0.98
(3419 - x)/469 = 2.04
3419 - x = 956.76
x = 3419 - 956.76 = 2462.24

Therefore, the weight to be used as cut-off is 2462.24 g
3 0
3 years ago
Write 5000 = 12 as an order pair
mina [271]
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3 0
3 years ago
Annie tried to solve a problem step by step: 7.5 + k = 10 7.5 + k - 7.5 = 10 - 7.5 step 1 k = 2.5 step 2 Find Annie's mistake: A
Law Incorporation [45]

Answer:

(C) Annie did not make a mistake

Step-by-step explanation:

To isolate the variable k in the equation 7.5 + k = 10, we'd have to subtract 7.5 from both sides so we just had k on one side.

This is exactly what Annie did, and therefore, her answer is correct.

Hope this helped!

5 0
4 years ago
Read 2 more answers
A bag contains 4 red marbles, 6 blue marbles, and 8 green marbles. One marble is to be chosen at random.
goldenfox [79]
4 red marbles
6 blue marbles
8 green marbles

Add:

4 + 6 = 10
10 + 8 = 18
18 total marbles 

Green marbles/total marbles 
 
8/18

Simplify:

8 ÷ 2 = 4
18 ÷ 2 = 9
Simplest form = 4/9 

8/18 = 4/9
D. 4/9
6 0
4 years ago
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