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liubo4ka [24]
3 years ago
9

Simplify: (5x2 − 9x + 3) + (4x2 + 4x − 12)

Mathematics
2 answers:
dem82 [27]3 years ago
6 0
5x2 - 9x + 3 + 4x2 + 4x - 12
= 9x2 - 5x - 9

hope this helps (all I did was combine like terms)
Irina-Kira [14]3 years ago
3 0
(5x² - 9x + 3) + (4x² + 4x - 12) = 5x² - 9x + 3 + 4x² + 4x - 12 = 9x² -5x - 9
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sattari [20]
1,468 sqft hope that’s right
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3 years ago
How many solutions does the system have? \begin{cases} 3x+y=8 \\\\ 2x+2y=8 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ 3x+y=8 2x+2y=8 ​ Choose 1
ELEN [110]

Answer:

This system has one solution (x=2 and y=2), then the answer is A.

Step-by-step explanation:

The system of equations is:

3x+y=8 (1)

2x+2y=8 (2)

Let's multiply the first equation by 2 and subtract it to the second equation  

6x-2x+2y-2y=16-8

4x=8  

x=2

Using this value in (1) we can find y.

3(2)+y=8

6+y=8

y=2

Therefore, this system has one solution (x=2 and y=2), the answer is A.

I hope it helps you!

3 0
3 years ago
How do you find Find the value of x.
likoan [24]

Answer:

x = 114

Step-by-step explanation:

Since p and q are parallel, the angle = 104° is equal to the angle = ( x - 10 )° by alternate exterior angles.

That means 104 = ( x - 10 )

                    +10          +10

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3 0
2 years ago
PLEASE HELP ITS A TIMED QUIZ IM DESPERATE ILL GIVE U BRAINLIEST AND A THANKS PLEASE
den301095 [7]

Answer:

2000 = 600 + 2/5x ; 3500 ft

How To Solve:

2000 = 600 + 2/5x

Combine multiplied terms into a single fraction

2000 = 600 + 2/5x

2000 = 600 + 2x/5

Subtract 600 from both sides of the equation

2000 = 600 + 2x/5

2000 - 600 = 600 + 2x/5 - 600

Simplify

Subtract the numbers

1400 = 600 + 2x/5 − 600

Subtract the numbers

1400 = 2x/5

Solution

X = 3500

7 0
3 years ago
Jerry has a miniature model of a boat. He knows that the model is 3 3/4 inches wide and 5 1/2 inches long. What is the actual le
mylen [45]

Answer:

22 feet

Step-by-step explanation:

Change 15 feet into inches using the conversion

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15 ft = 15 × 12 = 180 inches

scale factor = 180 ÷ 3.75 = 48

Thus the actual dimensions of the boat are 48 times the model.

actual length = 48 × 5.5 = 264 inches = 264 ÷ 12 = 22 feet

6 0
3 years ago
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