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laila [671]
4 years ago
9

Which pair of ratios form a proportion?a. 9/23 and 27/46 b. 11/6 and 44/36 c. 13/4 and 65/24 d. 19/14 and 57/42

Mathematics
1 answer:
user100 [1]4 years ago
7 0

Answer: d

Step-by-step explanation:

19*3=57

14*3=42

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If y varies inversely with 2.5x, and y=5.6 and x=30, write an equation to represent this relationship
klasskru [66]
Let the constant of variation be c.
We are given that y varies inversely with 2.5x, this means that:
y = (c) / (2.5x)
This can be written as:
2.5xy = c

Now, we a re given that y = 5.6 at x = 30.
Substitute with these values in the equation to get the value of c as follows:
2.5xy = c
2.5(30)(5.6) = c
c = 420

Therefore, the equation that describes the relation is:
2.5xy = 420
3 0
4 years ago
Solve -3/4(8k-24)>-12
lisabon 2012 [21]

-\dfrac{3}{4}(8k-24) > -12\ \ \ \ |\teext{change the signs}\\\\\dfrac{3}{4}(8k-24) < 12\ \ \ \ |\cdot\dfrac{4}{3}\\\\8k-24 < 12\cdot\dfrac{4}{3}\\\\8k-24 < 4\cdot4\\\\8k-24 < 16\ \ \ \ |+24\\\\8k < 40\ \ \ \ |:8\\\\k < 5\to k\in(-\infty;\ 5)

7 0
3 years ago
Suppose that you need to build as many chairs as possible. Each chair requires one seat, one back, and four legs. If you have 12
GrogVix [38]

Answer:

  legs limit the number of chairs that can be built

Step-by-step explanation:

The maximum number of chairs that can be built will be the minimum of the number of parts divided by the number of parts needed for each chair, as computed across the different kinds of parts required.

  seats: 12 available, used 1 per chair: 12/1 = 12 chairs possible

  backs: 15 available, used 1 per chair: 15/1 = 15 chairs possible

  legs: 44 available, used 4 per chair: 44/4 = 11 chairs possible

The maximum number of chairs that can be built will be the minimum of 12, 15, and 11. That is, 11 chairs can be built, limited by the number of available legs.

6 0
2 years ago
Eh help me out<br> what 18% of 32
DIA [1.3K]

Answer:

5.76

Step-by-step explanation:

18% of 32

=18% x 32

=18/100 x 32

=576/100

=5.76

6 0
3 years ago
What is (3 x 20) + 9 and what is (4 x 100) + 20?
madreJ [45]

Answer:

(3 x 20) + 9 = 69

4 x 100) + 20 = 420

7 0
3 years ago
Read 2 more answers
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