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krek1111 [17]
3 years ago
14

What is used to support the steps of a geometric proof

Mathematics
1 answer:
DanielleElmas [232]3 years ago
8 0
Measurement and observation or experiment
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The height after t seconds of an object projected upward with an initial velocity of 48 feet per second from a 210-foot tower ca
svetlana [45]

Given:

The height h of an object after t seconds is

h=-16t^2+48t+210

The height of a neighboring 50-foot tall building is modeled by the equation h=50.

The time (t) when the object will be at the same height as the building is found to be t = –2 and t = 5.

To find:

The statement which describes the validity of these solutions.

Solution:

We have,

h=-16t^2+48t+210

Here, t is the time in seconds.

For t=-2,

h=-16(2)^2+48(-2)+210

h=-64-96+210

h=50

For t=5,

h=-16(5)^2+48(5)+210

h=-400+240+210

h=50

So, the value of h is 50 at t=-2 and t=5.

We know that time is always positive so it cannot be negative value. It means t=-2 is not possible.

The solution t = 5 is the only valid solution to this system since time cannot be negative.

Therefore, the correct option is C.

6 0
3 years ago
Is the equation -x=1-y and 2+y=x+1 coincident, intersecting, or parallel
yarga [219]
\bf x=1-y\implies x+y=1\implies y=-x+1\\\\
-------------------------------\\\\
2+y=x+1\implies y=x+1-2\implies y=x-1

notice the equations in slope-intercept form, the first one has a slope of -1, the second one has a slope of 1.

if the slopes are equal, and the constant is different, they lines are parallel.

if the slopes are equal, and the constant is the same the equations are exactly the same thing, and the lines are coincident, on slapped on top of the other.

if the slopes differ, like here, then they have a solution, where they intersect.
4 0
3 years ago
What equals b + b + b =​
Arte-miy333 [17]

Answer:

3b

Step-by-step explanation:

b+b=2b

2b+b=3b

7 0
3 years ago
Pls help me I have a test soon
chubhunter [2.5K]

Answer:

i can't see the picture

Step-by-step explanation:

5 0
2 years ago
Type the correct answer in the box. If necessary, use / for the fraction bar and simplify the fraction. cos(75°)cos(15°) =
diamong [38]

Answer:

1/4

Step-by-step explanation:

using the product-to sum formulas, this is

1/2 (cos(75+15) + cos(75-15))

5 0
3 years ago
Read 2 more answers
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