A four-digit number is to be made using the digits 1, 3, 5, and 8. How many numbers can be made if all digits must be different?

There would be A LOT of answers. I'm going to try my best to get them all.

2. 1385

3. 1583

4. 1538

5. 1835

6. 1853

7. 8531

8. 8513

9. 8315

10. 8351

11. 8135

12.8153

13. 5381

14.5318

15.5138

16.5183

17.5813

18.5831

19.3518

20.3581

21.3581

22.3815

23.3851

24.3158

25.3185

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c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

it is x=-4

step-by-step explanation: