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Sliva [168]
3 years ago
8

(5a^3-2a^2)+(6a^3+9a^2+8a)

Mathematics
1 answer:
Gnom [1K]3 years ago
8 0

Answer:

11a^3 + 7a^2 + 8a

Step-by-step explanation:

( 5a^3 - 2a^2 ) + ( 6a^3 + 9a^2 + 8a )

= 5a^3 + 6a^3 + -2a^2 + 9a^2 + 8a

= 11a^3 + 7a^2 + 8a

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Let 4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1) find x=?
Gekata [30.6K]

4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1)

4^x  - 3^x * 3^-1/2 = 3^x * 3^1/2 - 2^2x * 2^-1

2^2x  + 2^2x * 1/2 = 3^x * 3^1/2 + 3^x * 3^-1/2

2^2x(1 + 1/2) = 3*x( 3^1/2 + 3^-1/2)

3/2 * 2^2x =  2.3094 * 3^x

ln 1.5 + 2x ln 2 = ln 2.3094 + x ln 3

2x ln 2 - x ln3 = ln 2,3094 - ln 1.5

1.3863 x - 1.0986 x =  0.4315

0.2877x = 0.4315

x =  1.5   Answer




6 0
4 years ago
1) Name the x-intercept of the graph for the<br> equation 4x +2y = 8
Ksju [112]

Answer:

The x-intercept is at (2,0).

Step-by-step explanation:

The x-intercept(s) can be found by setting y to 0 and solving for x.

Your equation is:

4x+2y=8.

To find x-intercept replace y with 0:

4x+2(0)=8

4x =8

Divide both sides by 4:

x =2

The x-intercept is at (2,0).

7 0
3 years ago
Read 2 more answers
there are 14 red marbles and 19 blue marbles in a bag you randomly choose one of the marbles what is the probability of choosing
Sedaia [141]

Answer:

4/23

Step-by-step explanation:

Probability of choosing a red marble = # of red marbles / total # of marbles

We are told that there are 4 red marbles and 19 blue marbles

So the # of red marbles = 4

And the total # of marbles = 4 + 19

4 + 19 = 23

So there are a total of 23 marbles

Recall that probability of choosing a red marble is equal to # of red marbles / total # of marbles

Hence, the probability of choosing a red marble is 4/23

Note: 4/23 is already in it's simplest form so no simplifying has to be done.

4 0
3 years ago
Read 2 more answers
Which expression describes these arrays?
OleMash [197]

Step-by-step explanation:

3 \times (3 \times 2) = 18 \\ 2 \times (3 \times 2) = 12 \\ 2 + (3 \times 2) = 8

4 0
3 years ago
Susan throws a softball upward into the air at a speed of 32 feet per second from a 88 dash foot88-foot platform. the distance u
Rudiy27
D(t)=-16t²+32t+88
a] Maximum height
At maximum height d'(t)=0
from d(t);
d'(t)=-32t+32=0
thus
t=1
hence the maximum height will be:
d(t)=-16t²+32t+88
d(1)=-16(1)^2+32(1)+88
d(1)=104 ft

2] <span> how many seconds does it take to reach the ground after first being thrown​ upward? ​
Here we solve for t intercept
</span>when d(t)=0
<span>thus</span>
0=-16t²+32t+88
<span>solving for t, we get:
t=1-</span>√13/2
or
<span>t=1+</span>√13/2
<span>
t=-1.55 or t=3.55 sec
Thus the answer is t=3.55 sec


</span>
3 0
3 years ago
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