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lara31 [8.8K]
3 years ago
5

Determine if line AB is tangent to the circle.

Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

7) No

8) Yes

Step-by-step explanation:

Tangent lines are perpendicular to the radius lines at the point of intersection.  So we just need to check if these are right triangles.

7) c² = a² + b²

20² = 12² + 14²

400 = 340

No

8) c² = a² + b²

13² = 7.8² + 10.4²

169 = 169

Yes

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spayn [35]

Answer:

80%

Step-by-step explanation:

Given:

Team D used a recipe that consists of 20 cups of sand, 2 cups of flour, and 3 cups of water.

Question asked:

How does the percent of sand in Team D's recipe compare to that of the other teams ?

Solution:

Team D used a recipe that consists of sand = 20 cups

Team D used a recipe that consists of  flour =  2 cups

Team D used a recipe that consists of  water = 3 cups

Total number of cups together = 20 + 2+ 3 =25 cups

Now we will have to find percent of cups of sand out of the total number of cups.

By using formula of percentage,

Percent = \frac{Value}{Total \ value}\times100

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Therefore, 80% of sand in Team D's recipe compare to that of the other teams.

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