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2 years ago

Answers to 7 and 8 please (:

Mathematics

1 answer:

SpyIntel [72]2 years ago

7 0

7) Skateboarding down a hill or a ramp. Rolling a ball on the floor. Going up and down the ramp of a moving truck.

8) Throwing a ball into the air and then catching it. Skateboarding a half-pipe. Shooting a basketball. Hitting a baseball.

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Choose the correct conic section to fit the equation.

yanalaym [24]

Answer:

Option A) Circle.

Step-by-step explanation:

We are given the equation:

$(x - 3)^2 + (y - 12)^2 = 25$

A general equation of the circle is of the form:

$(x-h)^2 + (y-k)^2 = r^2$

where (h,k) is the center of the circle and r is the radius of circle.

Comparing the two equations, we get,

$(h,k) = (3,12)\\r = \sqrt{25} = 5$

Thus, the given equation is equation of a circle centered at (3,12) and of radius 5 units.

5 0

3 years ago

Using Triangle Similarity Theorems (6)

Fantom [35]

Answer:

DC = 3

Step-by-step explanation:

Based on triangle similarity theorem, we would have the following equation:

$\frac{AD}{AC} = \frac{AE}{AB}$

Plug in the values

$\frac{9}{9 + DC} = \frac{12}{12 + 4}$

$\frac{9}{9 + DC} = \frac{12}{16}$

$\frac{9}{9 + DC} = \frac{3}{4}$

Cross multiply

3(9 + DC) = 9×4

27 + 3DC = 36

Subtract 27 from each side

3DC = 36 - 27

3DC = 9

Divide both sides by 3

DC = 9/3

DC = 3

6 0

2 years ago

4 equals 2 m -5 n 4 m

Ostrovityanka [42]

M = 6 - 5n hope this helps

7 0

3 years ago

A carpender buys bolts for 1.18 per pound. The carpenter brought 18.5 lb. of bolts. How much did the bolts cost?

riadik2000 [5.3K]

All you have to do is multiply the two numbers together
1.18 x 18.5 = 21.83

4 0

3 years ago

Which expression is equivalent to 100 in exponential form? A) 102 B) 210 C) 10 × 10 D) 4 × 25

Paul [167]

Answer:

A) 10^2

Step-by-step explanation:

100 is 10 times 10 or 10 to the second power

100 = 10 * 10 = 10 ^2

6 0

3 years ago