All categories

3 years ago

What is the solution? x^2 + 7x – 18 = 0

Mathematics

2 answers:

Drupady [299]3 years ago

7 0

When factored, you get (x - 2)(x + 9) = 0
Solve this and you have x = 2, -9

masya89 [10]3 years ago

4 0

X is equal to 2. put 2 in for X and try to solve it

You might be interested in

Need help ASAP thanks!

kherson [118]

Answer:

it's 11.

Step-by-step explanation:

15(11)= 165. It's also 4 less than 15, which is the length.

4 0

2 years ago

Suppose that one box contains 201 long bolts and 323 short bolts ,and that the other box contains 505 long bolts and 412 short b

astraxan [27]

Answer:

the answer is 420 your welcome

4 0

3 years ago

Based on the side lengths given (a, b, and o, which triangles are right triangles?

Cloud [144]

Answer:

2 & 3

Step-by-step explanation:

Pythagorean Theorem is $a^2+b^2=c^2$ .

If the values given in each option satisfy the theorem, the sides will make a right triangle.

<h3>For Option One:</h3>

$4^2+6^2=8^2\\=> 4^2=16\\=> 6^2=36\\=>8^2 =64\\16+36=64\\\boxed{52\neq 64}$

The sides would not make a right triangle.

<h3>For Option Two:</h3>

$6^2+8^2=10^2\\=> 6^2 = 36\\=> 8^2=64\\=> 10^2=100\\36+64=100\\\boxed{100=100}$

The sides would make a right triangle.

<h3>For Option Three:</h3>

$5^2+6^2=\sqrt{61}^2\\ => 5^2=25\\=>6^2=36\\=>\sqrt{61}^2=61\\ 25+36=61\\\boxed {61=61}$

The sides would make a right triangle.

<h3>For Option Four:</h3>

$6^2+9^2=12^2\\=> 6^2=36\\=>9^2=81\\=>12^2=144\\36+81=144\\\boxed{117\neq 144}$

The sides would not make a right triangle.

The correct answer should be options two and three.

6 0

2 years ago

Show a rectangle that is 1/2 meters long and is 3/10 meters wide

andreev551 [17]

________________
  I I not drawn to scale
3/10 I I
I I
I I
________________I
1/2

3 0

2 years ago

Pls help me with this no links please and Thank you

den301095 [7]

The top graph is correct because an x=# will create a vertical line at that #

4 0

2 years ago

Read 2 more answers