2 years ago

2x² + 4x + 4 + x² + 1 = 180

Mathematics

1 answer:

Tasya [4]2 years ago

5 0

Step-by-step explanation:

$2 {x}^{2} + 4x + 4 + {x}^{2} + 1 = 180$

$3 {x}^{2} + 4x + 5 = 180$

${3x}^{2} + 25x - 21x - 175 = 0$

$x \times (3x + 25) - 7(3x + 25) = 0$

$(3x + 25) \times (x - 7) = 0$

$3x + 25 = 0 = x - 7 = 0$

$x = - \frac{25}{3} = x = 7$

$= x_{1} = - \frac{25}{3} . \: \: x_{2} = 7$

You might be interested in

List the prime numbers from 41-60

disa [49]

43 47 53 59 are the prime numbers

3 0

2 years ago

I do draws a blueprint of a house using the scale 1 in equals 6 ft in the kitchen has a length of 24 ft what is the length of th

ikadub [295]

Answer:

Length of kitchen on blueprint = 4 in.

Step-by-step explanation:

Scale used to draw a blueprint of a house :

6 feet = 1 in.

Therefore, 1 feet = $\frac{1}{6}$ in.

If the length of kitchen = 24 feet

Then the length of kitchen on the blueprint will be

= $\frac{1}{6}\times 24$

= 4 in.

Therefore, length of kitchen on blueprint is 4 in.

8 0

2 years ago

Write 27% as a fraction.

Reil [10]

Answer:

27/100

Step-by-step explanation:

27%= 0.27= 27/100 which cannot be reduced

5 0

2 years ago

Read 2 more answers

9 11/12- 2 8/11 is a problem that i need help on

Vitek1552 [10]

Hey there!!

Okay here are the steps you can follow!

9 11/12 ----> improper fraction ----> 119/12
2 8/11 ----> improper fraction ----> 30/11

119/12 - 30/11
(119/12 - 30/11) * 132
11(119) - 12(30)
1309 - 360
<u>949</u>

3 0

2 years ago

If b = -3, find<br> answer

Nookie1986 [14]

Answer:

-2

Step-by-step explanation:

$(-3)^2+3(-3)-2\\=9-9-2\\=-2$

6 0

2 years ago