Answer:
×=3
Step-by-step explanation:
3× + × + 8 = 20
4×= 12
divide 4 with 12 and it will be 3
Answer:
Mai is moving faster than Priya.
Step-by-step explanation:
It is given that Mai traveled 15 meters in 6 seconds.

The speed Mai is

Priya travels 22 meters in 10 seconds. Speed of Priya is

Since speed of Mai is more than the speed of Priya, therefore Mai is moving faster than Priya.
The answer of my classmate that the line has a positive slope is CORRECT. This is because the line is most likely to lean to the right. The slope can be calculated through the equation,
slope = rise / run = change in y / change in x
If both are negative, the slope is POSITIVE.
I dont understand the question.
Answer:
4√6
Step-by-step explanation:
On the below image, I labeled the 4 points A, B, C, and D. In this diagram, ΔABC is similar to ΔADB and ΔBDC.
Let's look at ∠C here, and find the ratio from the leg adjacent to ∠C and the hypotenuse in 2 triangles, ΔABC and ΔBDC. I chose these as they both share ∠C. You could do the same with ∠A, choosing ΔADB instead.
ΔABC: 
ΔBDC: 
This is just the longer leg over the hypotenuse as said above. Because these triangles are similar, these ratios must be the same. We can write an equation to show that:

In order to find BD, we first need to find either of the legs in ΔABC. I'll go for BC here as it looks like it'd be the easiest to solve for in this equation. Cross multiply:

At this point, you can plug in the given values for AD and DC, then solve for BC.

Finally, you can use the pythagorean theorem to find x in ΔBDC.
