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Kisachek [45]
3 years ago
11

Subtract. (-9r - 3) - (7r - 1) Submit

Mathematics
1 answer:
harina [27]3 years ago
8 0

Answer:

-16r -2

Step-by-step explanation:

plz brainliest :)

do you want an explanation?

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A mountain climber climbed a cliff 50 feet at a time. He did this 5 times in one day. What was the overall change in his elevati
Goshia [24]

Answer:

Step-by-step explanation:

The overall change is -150 feet. 50 times 5 is 150 feet, and the mountain climber descended. Therefore, the change is -150 feet in elevation.

4 0
3 years ago
A particle sits on a smooth surface and is acted upon by a time dependent horizontal force, giving it an
garik1379 [7]

(a) By the fundamental theorem of calculus,

<em>v(t)</em> = <em>v(0)</em> + ∫₀ᵗ <em>a(u)</em> d<em>u</em>

The particle starts at rest, so <em>v(0)</em> = 0. Computing the integral gives

<em>v(t)</em> = [2/3 <em>u</em> ³ + 2<em>u</em> ²]₀ᵗ = 2/3 <em>t</em> ³ + 2<em>t</em> ²

(b) Use the FTC again, but this time you want the distance, which means you need to integrate the <u>speed</u> of the particle, i.e. the absolute value of <em>v(t)</em>. Fortunately, for <em>t</em> ≥ 0, we have <em>v(t)</em> ≥ 0 and |<em>v(t)</em> | = <em>v(t)</em>, so speed is governed by the same function. Taking the starting point to be the origin, after 8 seconds the particle travels a distance of

∫₀⁸ <em>v(u)</em> d<em>u</em> = ∫₀⁸ (2/3 <em>u</em> ³ + 2<em>u</em> ²) d<em>u</em> = [1/6 <em>u</em> ⁴ + 2/3 <em>u</em> ³]₀⁸ = 1024

7 0
3 years ago
A certain quadratic function has x-intercepts at 2 and 3. What are the x-coordinates of its vertex?
Alik [6]
<h3>Answer:  D) 5/2</h3>

==================================================

Explanation:

The parabola is symmetric around its vertex. This means that the roots are the same horizontal distance away from the vertex. Furthermore, we can apply the midpoint formula on the given roots to find the x coordinate of the vertex.

Find the midpoint of 2 and 3 to get (2+3)/2 = 5/2

Note: 5/2 = 2.5

6 0
3 years ago
Pls help I need the answer quick
VashaNatasha [74]
Answer:
49
..............
4 0
3 years ago
What is the solution to -6x+18=7-(4x+9)?
vfiekz [6]

Answer:

X = 10

Step-by-step explanation:

If you insert 10 both numbers will be the same

6 0
4 years ago
Read 2 more answers
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