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3 years ago

I'm really getting tired of the questions like these lol

Mathematics

1 answer:

Andre45 [30]3 years ago

4 0

Step-by-step explanation:

(3x+3)(x+2)=

3x^2+6x+3x+6

=3x^2+9x+6

we get quadratic equation

find discriminant:

D=b^2-4ac=81-72=9

x=(-b±√D)/2a

x1=-6/6=-1

x2=-12/6=-2

one of the x values should be correct.

but why when I try to put values I get zero

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The volume of the prism is 81 m3.

Citrus2011 [14]

Answer:

27 m^3

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

All of them , please and thank you

aalyn [17]

1) Simplified: k-6
Excluded Value: k=-10

2) Simplified: 4/k-8
Excluded Values: k=-4, k=8, k=4

3) Simplified: 10/9m
Excluded Values: m=0, m=-3

4) Simplified: a-3
Excluded Values: a=1, a=2, a=6

5) Simplified: 3/4
Excluded Value: y= 0

6) Simplified: 4-3x/2x
Excluded Values: X=0

7 0

2 years ago

write an equation in slope intercept form of the line with a slope- 2 and y intercept 3. Graph the line

charle [14.2K]

Answer:

y = -2x + 3

Step-by-step explanation:

Step 1: Find out what each part of slope intercept form is

Slope Intercept Form: y = mx + b

m is the slope

b is the y-intercept

Step 2: Plug in the information into the formula

m/slope = -2

b/y-int = 3

y = -2x + 3

Answer: y = -2x + 3

4 0

3 years ago

Helppppppp pleaseeee it’s mathhhhhh

Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

6x+25=10x-11

-4x=-36

x=8

6(8)+25

48+25=73

I am not sure on this one but hope I helped

3 0

2 years ago

X-4y-8=6/8+-8y-2y 5y-3(6-7/8)=5x-4y+3

Ivan

First simplify

x-4y-8=3/4-10y
add 10y both sides and add 8
x+6y=8+3/4
times 4 both sides
4x+24y=32+3
4x+24y=35

5y-3(6-7/8)=5x-4y+3
add 4y both sides
9y-3(6-7/8)=5x+3
distribute
9y-18+21/8=5x+3
minus 5x both sides
9y-5x-18+21/8=3
add 18 to both sides and minus 21/8 both sides
9y-5x=21-21/8
times 8 both sides
72y-40x=147
72y-40x=147

so we got

24y+4x=35
72y-40x=147

multiply first equation by -3 and add to 2nd

-72y-12x=-105
72y-40x=147 +
0y-52x=42

-52x=42
divide both sides by -52
x=-21/26
sub back

24y+4x=35
24y+4(-21/26)=35
using math
y=497/312

the solution is
$( \frac{-21}{26}, \frac{497}{312} )$

8 0

2 years ago