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kolezko [41]
3 years ago
11

Solve x^2-4x-12=0 Show solutions

Mathematics
2 answers:
V125BC [204]3 years ago
5 0
(x-6) (x+2)
so x=6 or x= -2 
for futher help i wll be available but it is simple as that 
ValentinkaMS [17]3 years ago
3 0
X^2 - 4x - 12 = 0
(x + 2)(x - 6) = 0

x + 2 = 0
x = -2

x - 6 = 0
x = 6

solutions are : -2 and 6
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A cube with a side of 1m was sawn into cubes with a side of 1 cm and then laid in a row (in a straight line). What was the lengt
MrRissso [65]

Answer:

10 km

Step-by-step explanation:

volume of cube = s^3

1 m = 100 cm

volume = s^3 = (1 m)^3 = (100 cm)^3 = 1,000,000 cm^3

Since 1 m^3 = 1,000,000 cm^3, when you lay down the 1-cm cubes in a straight line with the edges touching, the line is 1,000,000 cm long.

1,000,000 cm = 10,000 m = 10 km

5 0
3 years ago
The sum of three numbers $x$ ,$y$, $z$ is 165. When the smallest number $x$ is multiplied by 7, the result is $n$. The value $n$
babymother [125]

You're given

<em>x</em> + <em>y</em> + <em>z</em> = 165

7<em>x</em> = <em>n</em>

<em>n</em> = <em>y</em> - 9

<em>n</em> = 9 + <em>z</em>

and you want to find <em>xyz</em>.

Solve the last three equations for <em>x</em>, <em>y</em>, and <em>z</em> :

7<em>x</em> = <em>n</em>   →   <em>x</em> = <em>n</em>/7

<em>n</em> = <em>y</em> - 9   →   <em>y</em> = <em>n</em> + 9

<em>n</em> = 9 + <em>z</em>   →   <em>z</em> = <em>n</em> - 9

Substitute <em>x</em>, <em>y</em>, and <em>z</em> into the first equation and solve for <em>n</em> :

<em>n</em>/7 + (<em>n</em> + 9) + (<em>n</em> - 9) = 165

<em>n</em>/7 + 2<em>n</em> = 165

<em>n</em> + 14<em>n</em> = 1155

15<em>n</em> = 1155

<em>n</em> = 77

Now solve for <em>x</em>, <em>y</em>, and <em>z</em> :

<em>x</em> = 77/7 = 11

<em>y</em> = 77 + 9 = 86

<em>z</em> = 77 - 9 = 68

Then the product is

<em>xyz</em> = 11 • 86 • 68 = 64,328

6 0
3 years ago
&lt;,&gt;,=. Which one is more bigger 0.2 or 1/5
lubasha [3.4K]

Answer:

0.2 = 1/5

Step-by-step explanation:

Convert 0.2 into a fraction.

You get 2/10.

Now simplify that number by dividing both the numerator and the denominator by 2.

You get 1/5.

Since 1/5 = 1/5, 0.2 and 1/5 are equivalent.

7 0
3 years ago
The sum of Jason’s 5 quiz scores is 95. What is the
earnstyle [38]

Answer:

A

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Find the intersection and union for L={-1,1,2} I={-1,3,7}
Zanzabum
Intersection means elements both have. Both sets have -1 but they have nothing else in common so the intersection is {-1}
Union means combining the sets so {-1, 1, 2, 3, 7} Note that I only wrote 1 twice. No duplicates allowed!
7 0
3 years ago
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