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Delicious77 [7]
3 years ago
14

What is the simplified expression for 3 a squared + 9 a b + 5 minus 4 a squared minus 4 a b + 3?

Mathematics
2 answers:
Gemiola [76]3 years ago
8 0

Answer:

-1ab^2 + 5b + 8

Step-by-step explanation:

3a^2+9ab+5-4a^2-4ab+3

3a^2-4ab^2=-1ab^2

9ab-4ab=5ab

5+3=8

-1ab^2+5ab+8

attashe74 [19]3 years ago
6 0

Answer:

Step-by-step explanation:

3a²+9ab+5-(4a²-4ab+3)=3a²+9ab+5-4a²+4ab-3=-a²+13ab+2

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David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.
Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.  

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

9x=2x+80

Now let us solve for x.

9x-2x=80

7x=80

x=\frac{80}{7}

Now let us substitute x=\frac{80}{7} in 7x (amount of money that Egil gets).

\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}

Upon cancelling out 7 from numerator and denominator we will get,

\text{ Amount of money that Egil will get}=80  

Therefore, Egil will get $80.    

6 0
4 years ago
What is the Point slope equation
anastassius [24]

Answer:

y - y1 = m(x - x1)

Step-by-step explanation:

The point slope form equation is [ y - y1 = m(x - x1) ]

(x1, y1) is any given point on the line.

m is the slope.

To solve this you would need these things:

  • Slope (y2-y1/x2-x1)
  • Y-intercept (y = mx + b)

Best of Luck!

3 0
3 years ago
Help
Evgen [1.6K]

Answer:

8.6

Step-by-step explanation:

The square root of 74 is 8.602325267. If you round this number to the nearest tenth you get 8.6

5 0
3 years ago
24xy-10y-18x from 13xy+12y+14x with explanation
Sav [38]

Answer:

24xy+2y−234x​2fromy+14x

Step-by-step explanation:

24xy−10y−(18×13)xxfromy+12y+14x

24xy−10y−234xxfromy+12y+14x

24xy−10y−234x​2fromy+12y+14x

24xy+(−10y+12y)−234x​2fromy+14x

4 0
3 years ago
A SQUARE PATIO HAS AN AREA OF 200 SQUARE FEET. HOW LONG IS EACH SIDE OF THE PATIO TO THE NEAREST 0.05
lara [203]
If you would like to know the length of each side of the patio, you can calculate this using the following steps:

an area ... 200 square feet
a ... the length of one side

area = a * a = a^2
200 = a^2
a = sqrt(200)
a = 14.14 feet

The correct result would be 14.14 feet.
6 0
3 years ago
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