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Vaselesa [24]
2 years ago
9

Don't have to answer all just at least 1 pls and write yes if the statement is a proportion or no if it is not a proportion.

Mathematics
1 answer:
malfutka [58]2 years ago
4 0

Answer:

3/8  = 12/32 is a proportion

Step-by-step explanation:

2:3 and 9:4 is not a proportion, 10/12 and 20/25 is not a proportion, 4/9 and 17/38 is not a proportion

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What would the coordinates (4,9) become with a 400% dilation
muminat
(1600,3600) you multiply the 4X400 and 9X400 
4 0
3 years ago
Find the value of x in the following equation: 9x + 8.0 = -12.7
andriy [413]

Answer: x=  − 2.3 and the total equation looks like this: 9(-2.3) + 8.0 = -12.7

7 0
3 years ago
Calculate the length of ac
svlad2 [7]

Answer:

  12.1 cm

Step-by-step explanation:

Using the law of sines, we can find angle C. Then from the sum of angles, we can find angle B. The law of sines again will tell us the length AC.

  sin(C)/c = sin(A)/a

  C = arcsin((c/a)sin(A)) = arcsin(8.2/13.5·sin(81°)) ≈ 36.86°

Then angle B is ...

  B = 180° -A -C = 180° -81° -36.86° = 62.14°

and side b is ...

  b/sin(B) = a/sin(A)

  b = a·sin(B)/sin(A) = 13.5·sin(62.14°)/sin(81°) ≈ 12.0835

The length of AC is about 12.1 cm.

_____

<em>Comment on the solution</em>

The problem can also be solved using the law of cosines. The equation is ...

  13.5² = 8.2² +b² -2·8.2·b·cos(81°)

This is a quadratic in b. Its solution can be found using the quadratic formula or by completing the square.

  b = 8.2·cos(81°) +√(13.5² -8.2² +(8.2·cos(81°))²)

  b = 8.2·cos(81°) +√(13.5² -(8.2·sin(81°))²) . . . . . simplified a bit

3 0
3 years ago
Read 2 more answers
A presidential candidate plans to begin her campaign by visiting the capitals in 44 of 5050 states. what is the probability that
defon
Part A:

Given that <span>A presidential candidate plans to begin her campaign by visiting the capitals in 4 of 50 states.

The number of ways of selecting the route of 4 specific capitals is given by

^{50}P_4= \frac{50!}{(50-4)!} =  \frac{50!}{46!} =50\times49\times48\times47=5,527,200

Therefore, the probability that she selects the route of four specific​ capitals is \frac{1}{5,527,200}



Part B:
</span>
<span>The number of ways of selecting the route of 4 specific capitals is 5,527,200.

Since </span><span>the number of ways of selecting the route of 4 specific capitals is too large it is not practical to list all of the different possible routes in order to select the one that is​ best.

Therefore, "</span><span>No, it is not practical to list all of the different possible routes because the number of possible permutations is very large."</span>
3 0
4 years ago
1 over 4a = 2 over 3. Which of the following equals a in this equation?
dlinn [17]

Answer:

3/8

Step-by-step explanation:

The equation is given as:

1/4*a=2/3

We can simply the equation by getting rid of the denominators which is 4a and 3. Therefore we can multiply both sides with 3*4*a:

(1/4*a)3*4*a=(2/3)*3*4*a

On the left hand side 4a cancels with 4a and on the right hand side 3 cancels with 3. We are left with:

3=2*4*a

∴ After simplying

a=3/8

4 0
3 years ago
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