Help!.................................

This is a picture of a cube and the net for the cube.

makvit [3.9K]

I cant give you the answer without the picture but I can tell you how to solve it.

if all the sides are the same length just multiply one of the numbers by the sides, for example, a rubics cube is 9 cm on each side. 9*6=54, so the answer would be 54 cm

6 0

3 years ago

Read 2 more answers

Factorise 2x^2 - 3x -2 < 0

Galina-37 [17]

Step 1: Factor $2 x^{2} - 3x -2$
1. Multiply 2 by -2, which is -4.
2. Ask: Which two numbers add up to -3 and multiply to -4?
3. Answer: 1 and -4
4. Rewrite $-3x$ as the sum of $x$ and $-4x$

$2 x^{2} +x-4x-2\ \textless \ 0$

Step 2: Factor out common terms in the first two terms, then in the last two terms.

 $x(2x+1)-2(2x+1)\ \textless \ 0$

Step 3: Factor out the common term $2x+1$

$(2x+1)(x-2)\ \textless \ 0$

Step 4: Solve for $x$

1. Ask: When will $(2x+1)(x-2)$ equal zero?
2. Answer: When $2x + 1 = 0$ or $x-2=0$
3. Solve each of the 2 equations above:

 $x=- \frac{1}{2} ,2$

Step 5: From the values of $x$ above, we have these 3 intervals to test.
x = < -1/2
-1/2 < x < 2
x > 2

Step 6: Pick a test point for each interval

For the interval $x\ \textless \ - \frac{1}{2} 
$
Lets pick $x=-1.$ Then, $2(-1) ^{2} -3 * -1 -2 \ \textless \ 0$
After simplifying, we get $3\ \textless \ 0$ , Which is false.
Drop this interval.

For this interval $- \frac{1}{2} \ \textless \ x\ \textless \ 2$
Lets pick $x=0$ . Then, $2* 0^{2} - 3 * 0-2\ \textless \ 0$ . After simplifying, we get $-2\ \textless \ 0,$ which is true. Keep this interval.

For the interval $x\ \textgreater \ 2$

Lets pick $x = 3.$ Then, $2 * 3 ^{2} -3*3-2\ \textless \ 0.$ After simplifying, we get $7\ \textless \ 0$ , Which is false. Drop this interval.

.Step 7: Therefore,
$- \frac{1}{2} \ \textless \ x\ \textless \ 2$

Done! :)

4 0

3 years ago

Math Geniuses, I need your help!

vesna_86 [32]

Answer:

100

Step-by-step explanation:

Since the second 4 is two decimal points away from the first 4, the answer should be 100 (two zeros)

3 0

2 years ago

1 × 6,391 _____ 0.1 × 6,391 ____ 0.01 × 6,391 _____

Cerrena [4.2K]

1.= 6,391

2.=6,3910

3. = 6,39100

All you do is add the 0s at the end

5 0

2 years ago

the first box measures 8 inches by 6.25 inches by 10.5 inches. the second box measures 9 inches by 5.5 inches by 11.75 inches. W

ira [324]

First Box
V= L*W*H
V=8*6.25*10.5
V=50*10.5
V=525 inches³

Second Box
V=L*W*H
V=9*5.5*11.75
V=49.5*11.5
V=569.25 inches³

8 0

2 years ago