4 years ago

Solve for the missing variable. Round to the nearest hundredth if necessary.

Mathematics

1 answer:

vagabundo [1.1K]4 years ago

3 0

Answer:

Step-by-step explanation:

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The volume of a cube is 422cm cubed. work out the length of its side rounded to 1DP?

zepelin [54]

Volume of a cube is S^3

To find S take the cubic root of the volume

Side length = 7.5007

Rounded to 1 decimal place = 7.5 cm

5 0

4 years ago

The equation 8- 4X=0 has blank real solutions

Cloud [144]

Answer:

8-4x= 0 has only 1 solution

Step-by-step explanation:

This can only have one solution because there will only be one value that can set the equation equal to 0 that number is 2. -2 on the other hand will not work because you will get 8+8=0 which does not make sense so you can only have 1 solution.

Hope this helps

7 0

4 years ago

Which expression is equivalent to sqrt80

Hoochie [10]

Answer:

4 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Given

$\sqrt{80}$

= $\sqrt{16(5)}$

= $\sqrt{16}$ × $\sqrt{5}$

= 4 $\sqrt{5}$ ← in simplest form

3 0

3 years ago

Read 2 more answers

Can you please help me with this

Rina8888 [55]

The formula to find the volume multiplies the length by the width by the height, so length is 7, the width is 2 and the height is 3.

7×2×3= 42

42 cubic units.

7 0

3 years ago

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Exercise 2.1.47 Prove that ifA^-1 exists and AX=0 then X =0.

stepan [7]

Answer:

Step-by-step explanation:

If $A^{-1}$ exist, then we have that $A^{-1}\cdot A=1$ .

Therefore, in the case that $AX=0$ , if we multiply both

terms in the equation by $A^{-1}$ , then we have

$A \cdot A^{-1}X=A^{-1}0$

and so the equation tells us that

$X=A\cdot A^{-1}X=A^{-1}0=0$ .

5 0

3 years ago