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3 years ago

Help with #10 please

Mathematics

1 answer:

eimsori [14]3 years ago

4 0

Its probably my computer, but your attachment went to a page that said, page not found...srry...:(

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A rectangular solid has sides of 4 cm, 6 cm, and 8 cm. What is its surface area?

gizmo_the_mogwai [7]

The surface are of a rectangular prism is:

A=2(xy+xz+yz), where x,y, and z are the dimensions of the prism, in this case:

A=2(4*6+4*8+6*8)

A=2(24+32+48)

A=2(104)

A=208 cm^2

8 0

3 years ago

Read 2 more answers

What percent is equivalent to 2/3<br>

kkurt [141]

2/3 is equivalent too 66.6%

3 0

3 years ago

Andre and Elena knew that after 28 days they would have 2²⁸ coins, but they wanted to find out how many coins that actually is.

vlada-n [284]

Answer:

I agree with none of them

Step-by-step explanation:

Given

$Expression= 2^{28}$

$Andre: 2 * 28 = 56$

$Elena: 28 * 28 = 756$

Required

Who is correct?

$Expression= 2^{28}$

When we apply law of indices to the above, it gives 2 multiplies by itself in 28 places

i.e.

$Expression= 2^{28}$

$Expression= 2*2*2*..........*2$ ---- in 28 places

Andre's interpretation of the expression is incorrect as:

$2^{28} \neq 56$

Also, Elena's expression is incorrect.

This is so, because

$2^28 \neq 28*28$

<em>Hence, both of them are incorrect and I agree with none of them</em>

6 0

3 years ago

A line segment or ray that is perpendicular to the segment at its midpoint is called

Dimas [21]

Perpendicular bisector

3 0

3 years ago

What is the value of x?

Mashcka [7]

Answer:

120

Step-by-step explanation:

Because we know that the line opposite of the right angle is flat, we know that 60 plus x must equal 180. Rewriting this gives us 180 - 60 = x.

Now, we can just solve for x.

x = 120.

8 0

3 years ago