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Marrrta [24]
3 years ago
7

What is the solution of the quadratic system of equations? give brainliest and extra points!!

Mathematics
2 answers:
ololo11 [35]3 years ago
4 0

Try this solution:

The correct answer is 'a' only, where x= -4;-1 and y= -6;-21

kiruha [24]3 years ago
3 0

(- 1, - 6 ) from the list

Since both equations express y in terms of x, equate the right sides

x² + 10x + 3 = - x² - 5 ( add x² - 5 to both sides )

2x² + 10x + 8 = 0 ( divide all terms by 2 )

x² + 5x + 4 = 0

(x + 1 )(x + 4 ) = 0

equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 4 = 0 ⇒ x = - 4

substitute these values into either of the 2 equations for y

x = - 1 : y = 1 - 10 + 3 = - 6 ( using y = x² + 10x + 3 )

x = - 4 : y = 16 - 40 + 3 = - 21

solutions are (- 1, - 6 ) or (- 4, - 21 )


You might be interested in
find the value of solid figure not including hole cutout. Round to two decimal places. Cube figure is 12 feet long with 4 ft cut
Artemon [7]

Answer:

1577.20 ft³

Step-by-step explanation:

Cube of length = 12 ft = a

Hole diameter which is cutout = 4 ft = d

Hole radius which is cutout = 4/2 =2 ft = r

Volume of the cube = a³

⇒Volume of the cube = a×a×a

⇒Volume of the cube = 12×12×12

⇒Volume of the cube = 1728 ft³

The hole cut out will be in the shape of a cylinder

Volume of cylinder = πr²h

⇒Volume of cylinder = π×2²×12

⇒Volume of cylinder = 150.79 ft³

Now volume of the solid figure with hole cut out is

Volume of the cube - Volume of cylinder

=1728 - 150.79

=1577.20 ft³

∴ Volume of solid figure not including hole cutout is 1577.20 ft³

5 0
3 years ago
A consumer report counted 72 low-quality, 112 medium-quality, and 711 high-quality computers based on a random sample. The repor
olga nikolaevna [1]

Answer:

Low = 72/895

Medium = 112/895

High = 711/895

Step-by-step explanation:

Low = number of low quality products over the total number of products

72 / 72 + 112 + 711

Medium = number of medium quality products over the total number of products

112 / 72 + 112 + 711

High = number of high quality products over the total number of products

711 / 72 + 112 + 711

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

7 0
2 years ago
55.8 is 62% of what number?
zhenek [66]
90

55.8 /? = 62/100
55.8 x 100= 62 x ?
5580=62 x ?
5580/62 = ?
?=90
7 0
3 years ago
What is the domain of the function
Svet_ta [14]

Answer:

The answer would be D, 0 < x < 4

Step-by-step explanation:

Because Domian is left to right of a function, so left to right would be 0 to 4

7 0
3 years ago
Ok just answer this and im gonna mark as brainliest
suter [353]
Paperbacks and notebooks
3 0
3 years ago
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