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mart [117]
3 years ago
9

How to solve this problem im not getting a good answer

Mathematics
2 answers:
Margaret [11]3 years ago
8 0
     1) rewrite x^2-9 in the form a^2-b^2, where a=x and b=3.
4 over x+3 + 3 over x^2-3^2
 
     2)Use difference of squares
4 over x+3 + 3 over (x+3)(x-3)
 
     3) Cross multiply
4(x-3)+3 over (x+3)(x-3)
 
     4) Expand
4x-12+3 over (x+3)(x-3)
 
     5) <span>Simplify </span><span>4x-12+3<span>4x−12+3</span></span><span> to </span><span>4x-9<span>4x−<span>9
</span></span></span>4x-9 over (x+3)(x-3)



kow [346]3 years ago
7 0
Well, you have to simplify the bottom part to be able to answer it as a whole number. Hope this helps. 
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Could someone please explain to me how to solve this problem? Thanks! :)
BartSMP [9]

Answer:

First of all since they are dividing subtract the powers of the base from each other .

Make sure the bases are the same.

((6^7-6)(3^3-4))³

((6)(3^-1))³

(6³)(3^-3)

216 × 1/27

= 8

That's option d.

Hope this helps.

6 0
3 years ago
Complete the table. Explain why the relationship is a proportional relationship. A cashier earns $8 per hour. Time (h) 2 4 Pay (
Alekssandra [29.7K]

Answer:

8  16  24  32  <u>40</u>  48  56  64  <u>72</u>

1   2     3    4    <u>5</u>    6    7     8    <u>9</u>

Step-by-step explanation:

The proportion is 8:1

When the dollar amounts increase by 8, the hour amounts increase by 1, and vice versa. That is why it is a proportion.

6 0
3 years ago
I need help with this (9x+7)+(x+3)
coldgirl [10]

Answer:

9x^2+34x+21

Step-by-step explanation:

distribute all the numbers

3 0
3 years ago
Read 2 more answers
What is the square root of 4
tatuchka [14]

Answer:

2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
An aircraft flew 5 hours with the wind. The return trip took 6 hours against the wind. If the speed of the plane in still air is
Yakvenalex [24]

Answer:

Speed of wind = 23.63 miles per hour

Plane speed in still air = 260 miles per hour

Step-by-step explanation:

Given:

Time taken with wind = 5 hour

Time taken against wind = 6 hour

Assume;

Speed of wind = s

So,

Speed of Plane with wind = (260 + s) miles per hour

Speed of Plane against wind = (260 - s) miles per hour

Distance = speed x time

So,

(260 + s)5 = (260 - s)6

1,300 + 5s = 1,560 - 6s

11s = 260

s = 23.63 miles per hour

Speed of wind = 23.63 miles per hour

Plane speed in still air = 260 miles per hour

5 0
3 years ago
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