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ZanzabumX [31]
2 years ago
12

3/9=21/k what is the strategy for solving it

Mathematics
1 answer:
Vinvika [58]2 years ago
5 0

Answer: k = 63

Step-by-step explanation: You need to multiply the left side by its reciprocal to move the numbers to the right. You also need to multiply by k on the right side to get it alone on the left. This will result in

(9/3)(3/9) = (21/k)(9/3) simplified

1 = 189/3k • k    then multiply by k

k = 189/3 simplify

k = 63

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Someone please help me!! I'll give brainliest
MariettaO [177]

Answer:

sorry to answer late but..

Step-by-step explanation:

\frac{1}{75} cm = \frac{scale }{real}

the wings of the real plane are 12 meters or 1200 cm

we want to solve for the scale, sooo do the algebra...get scale by it self..

real * \frac{1}{75} = scale

1200 * \frac{1}{75} = 16

The scale model wings are 16 cm   2.54 cm is one inch so the wings are approx.  6.3 inches

4 0
2 years ago
Suppose we have two binomial populations where the true proportion of success is .2 for the first population and .3 for the seco
Veseljchak [2.6K]

Answer:

The value is not close to 0.3 because of sampling variability.

Step-by-step explanation:

The group of answer choices are not given which are as follows:  

  • All of the above
  • Because the sample size is too small  
  • Because of sampling variability  
  • Because of nonresponse bias

From this the correct option is option C which is Because of Sampling Variability.

This is true because the two populations are of different values and thus the sample is not dependent on any one of the two possibilities. When a sample of 4 is considered from first and 400 from the second the overall probability will be far from the value of 0.3. So the

7 0
2 years ago
Find (f+g)(x).
kaheart [24]

Answer:

(f+g)(x)  = x^3 - 3x + 2

Step-by-step explanation:

Find  (f+g)(x) by adding together f(x) = -3x + 2   and  g(x) = x^3:

  (f+g)(x) = -3x + 2 + x^3, or, in standard form,

(f+g)(x)  = x^3 - 3x + 2                                                        

7 0
2 years ago
Find the point-slope equation for
mars1129 [50]

Answer:

y-24=m(x--4)

Step-by-step explanation:

point slope form:

y-y₁=m(x-x₁)

1) find the slope or "m" first:

slope formula: (y2-y1)/(x2-x1)

(-53-24)/7+4

-77/11=-7

slope=-7

so

y-y₁=-7(x-x₁)

y1=24

x1=-4

y-24=m(x--4)

hope this helps!

8 0
3 years ago
ILL GIVE BRAINLIEST
labwork [276]

Answer:

I can't read the question it's too blurry

7 0
2 years ago
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