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daser333 [38]
3 years ago
15

The points A,B,C and D lie in a straight line.

Mathematics
1 answer:
sattari [20]3 years ago
5 0
If we had AB: BC: CD, we could easily have solved that problem. In order to combine these ratios, we need to have the same number for BC. We can create this number by finding LCM (Least Common Multiple) for 5 and 3, which is 15. Then, we can write ratios of AB:BC = 6:15 and BC:CD=15:20. Now, we can easily combine these ratios. AB:BC:CD = 6:15:20. Then, 6k+15k+20k = 82 and k=2 cm. And BC = 30 cm
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Please help with this question, I need the help urgently
grin007 [14]

Answer:

P in terms of V is:

P = 432/V

Step-by-step explanation:

We know that y varies inversely as x, we get the equation

y ∝ 1/x

y = k/x

k = yx

where k is called the constant of proportionality.

In our case,

P is inversely proportional to V

Given

P = 18

V = 24

so

P = k/V

k = PV

substituting P = 18 and V = 24 to determine k

k = 18 × 24

k = 432

now substituting k = 432 in P = k/V

P =  432/V

Therefore, P in terms of V is:

P = 432/V

5 0
4 years ago
Please help with number 9 & 10
aniked [119]

Answer:

9. Triangle ABQ is congruent to Triangle BAP because of SAS congruency

10. x=5, y isn't shown anywhere

Step-by-step explanation:

9. The side AB is shared between the two triangles.

It is given that angle A and angle B are congruent.

It is given that AQ is congruent with BP.

Using these three, you can say that  Triangle ABQ is congruent to Triangle BAP because of SAS congruency.

10. 7x-4=31 (given)

x=5

Do the same thing with y.

7 0
4 years ago
1.A shade of green paint is created by mixing a certain amount of yellow paint ratio of blue paint. The ratio of yellow to blue
neonofarm [45]
3) Answer: 8:9 (Defense:Offense)
16 and 18 need to be simplified. They're both divisible by 2, getting 8:9, and can't be simplified any more or they won't be whole numbers.

4) Answer: 1:3 (Hit:Bat times)
5 and 15 are divisible by 3, making 1 and 3.

5) Answer: 1:65 (Hours:Miles)
3 and 195 is divisible by 3. (195 is divisible by 3 because 1+9+5=15, getting the sum of numbers will get a smaller number, and if that number, 15 in this case, is divisible by 3, then the larger number is divisible by 3. 195/3=65, so 1:65

6) Answer: 1:3 (Potatoes:Servings)
8 and 24 is divisible by 8, getting 1 and 3.
3 0
3 years ago
A 3 foot stick is broken into two pieces. The ratio of the
nikdorinn [45]

Answer:

The first piece is 15 in and the second piece is 21 in

Step-by-step explanation:

5 + 7 = 12

3 ft = 3 x 12 in = 36 in

36 ÷ 12 = 3

5 x 3 = 15       7 x 3 = 21

The first piece is 15 in and the second piece is 21 in

8 0
3 years ago
The next model of a sports car will cost 12.8% more than the current model. The current model costs $42,000. How much will the p
Alex73 [517]

Answer:

$5,376

$47,376

Step-by-step explanation:

Given :

Price of current model = $42,000

Percentage increase in price = 12.8%

Price increase in dollars :

12.8% of $42000

0.128 * $42000

= $5,376

Price of the next model :

Price of current model + increase in price

$42000 + $5376

= $47,376

6 0
3 years ago
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