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Alona [7]
3 years ago
6

Please help me :((((

Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

Dannielle's mistake was that she added the exponents,

x^3 + 5x^3, doesn't equal 6x^6

Step-by-step explanation:

the correct work is below:

x^3 + 5x^3 + 5x^2 - 3x^2 + 2x - 7 - 1

6x^3 + 2x^2 + 2x -8

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Find the value of n if (81)^5/n = 243
zavuch27 [327]

Answer:

N = 14348907

Step-by-step explanation:

81^5 = 3486784401

3486784401/243 = 14348907

Double Check

3486784401 / 14348907=243

So N = 14348907.

3 0
3 years ago
Match the equation with its corresponding solution for x.<br> 4+x+2-2x=5
Leto [7]
4+x+2-2x=5
-x+6=5
-x+6-6=5-6[tex]
-x/-1 = -1/-1
x+1
5 0
4 years ago
Read 2 more answers
A rectangular field has a length that is 90 feet more than twice the width of the field. If the area of the field is 58,500 squa
iragen [17]

Answer:

D. 150 feet

Step-by-step explanation:

The formula for the area of a rectangle is:  area = lw, where l = length and w = width.  In this case, the length is defined as '90 feet more than twice the width' or l = 2w + 90.  If we put this expression in for the value of 'l' in our formula for area we get:

area = w(2w +90), distribute: area = 2w² + 90w = 58500

Subtracting 58500 from both sides, we get the following polynomial:

2w² + 90w - 58500

We can divide all the terms by '2' to simplify:

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Next, we look for the two factors of 29,250 that will add up to 45, which is -150 and +190 to factor our polynomial:

(w - 150)(w + 190) = 0

Setting both equations equal to 0 and solving for w:

w - 150 = 0 or w = 150

w + 190 = 0 or w = -190

Since our with can not be negative, then the correct width of the field is 150 ft.

6 0
3 years ago
What is the reciprocal of 31/2
blagie [28]
The reciprocal of a number is the number that the first number will multiply with that equals one.
So, for instance, the reciprocal of 3 is 1/3.
Since we can write 3 as 3/1, we can see it's simply flipping the numerator and denominator to find the reciprocal.
So, flipping numerator and denominator, the reciprocal of 31/2 is 2/31.
8 0
3 years ago
Solve the inequality | 9 - 3g | ≤ 12.<br><br> show work pls
HACTEHA [7]
<span> | 9 - 3g | ≤ 12
This is an example of absolute equality

it could be solved as follows:

9-3g </span>≤ 12                   and                       -(9-3g) <span>≤ 12
</span>
-9+9-3g ≤ 12-9          and                       -9+9+3g <span>≤ 12+9
</span>
-3g ≤ 3           /-3       and                       3g <span>≤ 21    /3

-1 </span>≤ g                        and                       g≤ 7

so the interval [-1,7] is the solution to your inequality






hope that helps
5 0
4 years ago
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