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ch4aika [34]
3 years ago
8

Please help me! -3a+6(1+6a)=4(8a+1)

Mathematics
1 answer:
den301095 [7]3 years ago
3 0

Answer:

-3a + 6 + 36a = 32a + 4

a = - 2

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How many points are shared by concentric circles?
Soloha48 [4]

Answer:

0

Step-by-step explanation:

By Theorem 10.2, in the same circle or congruent circles, if two chords are equal, then their corresponding minor arcs are congruent. Concentric circles have the same center but the circles do not intersect. Therefore, the number of points shared by concentric circles is 0.

5 0
3 years ago
Read 2 more answers
75% of the whole is 180. what is the whole.
earnstyle [38]

Answer: 240

180×100=18,000

18,000÷75=240

to check

.75×240=180

I hope this is good enough:

6 0
2 years ago
Function D models the depth of a submarine where D(x) is the depth in meters. When the submarine is x miles from its launching l
mixer [17]

The correct option D; models the depth of the submarine.

<h3>Define the term parabola?</h3>
  • Parabola, also known as an open curve or conic section, is formed when a right circular cone and a plane perpendicular to one of the cone's elements cross.

When a submarine is x miles out of its launch place, we need to figure out which table best represents the depth of the submarine using the function d, wherein d(x) is the depth, in meters.

Both x = 5 as well as x = 40 have zeros.

Since it's a parabola,

D(x) = a(x-5)(x-40)

vertex = (22.5, -146)

Thus,

-146 = a(22.5-5)(22.5-40)

a = -146/(22.5-5)(22.5-40)

a = 0.4767

Put value of a in equation.

D(x) = a(x-5)(x-40)

D(x) = 0.4767(x-5)(x-40)

The equation above is quadratic function model.

We can see from the graph that:

(5) and (0), respectively, are points on the graph (40,0).

Consequently, if x = 5 when y = 0, then.

y(min) > -160.

Additionally, the table in option (D) represents the submarine's depth.

To know more about the parabola, here

brainly.com/question/2841375

#SPJ4

The graph of the question with the options are attached.

6 0
1 year ago
Perform the indicated operation.(4r/r+3) - (5/r)
Aleks [24]

Answer:

4r² - 5r - 15 / r(r+3)

Step-by-step explanation:

To solve this problem, we will proceed the following way, writing down the common multiple of the denominators.

\frac{4r}{r+3} -\frac{5}{r} =\frac{4r(r)-5(r+3)}{r(r+3)} =\frac{4r^{2}-5r-15 }{r(r+3)}

Thus, the answer is 4r² - 5r - 15 / r(r+3)

7 0
4 years ago
can someone please help me solve these problems I did accept it on another paper I'm trying to see if I got them all correct I n
Hunter-Best [27]
3.
3 \div 30 = 10
sorry all I can help with at 10:15 at night
7 0
3 years ago
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