All categories

2 years ago

Someone please help me I'm confused

Mathematics

2 answers:

Vesnalui [34]2 years ago

8 0

Answer:

Step-by-step:

Ok. First, for volume, you do V= L x W x H.

What that means is, you would do 25cm x 20cm x 4cm. That would give you the answer.

Now for surface area, I don’t know the formula, I do it in my head. The answer for Surface Area is 1,360 cm.

I hope I helped you!

Alex777 [14]2 years ago

6 0

Answer:

Volume: 2000 cm^3 Surface Area: 1360cm^2

Step-by-step explanation:

Ok, so we know the formula for volume is length x width x height, so we can substitute in the numbers given, so we end up with:

25 x 4 x 20

when we multiply them together, we get:

2000cm^3. That's the volume.

The formula for Surface Area is:

S.A.=2(lw+wh+lh) . Now we substitute in the numbers given

S.A.=2( (25 x 4)+(4 x 20)+(25 x 20)) . Then we add and multiply, so we get:

S.A. = 1360cm^2

The Surface Area is 1360cm^2.

Hope this helped, sorry if I was wrong somewhere!

~Mschmindy

You might be interested in

For every 1% increase in

givi [52]

Answer:

The GDP gap is 9 % when there is 4.5 % unemployment.

Step-by-step explanation:

The statement shows a reverse relationship, where an increase in unemployment is following by decrease in potential GDP and can be translated into the following rate:

$r = \frac{2\,\% \,GDP}{1\,\% unemp.}$

The GDP gap at a given increase in unemployment can be estimated by the following expression:

$\frac{g}{u} = r$

$g = r\cdot u$

Where:

$r$ - GDP gap-unemployment increase rate, dimensionless.

$u$ - Increase in unemployment rate, measured in percentage.

$g$ - GDP gap, measured in percentage.

If $r = \frac{2\,\% \,GDP}{1\,\% unemp.}$ and $u = 4.5\,\%\,unemp.$ , the GDP gap is:

$g = \left(\frac{2\,\%\,GDP}{1\,\%\,unemp.} \right)\cdot (4.5\,\%\,unemp.)$

$g = 9\,\%\,GDP$

The GDP gap is 9 % when there is 4.5 % unemployment.

3 0

3 years ago

Find the surface area of composite figure. Please help

Ivan

Answer:

The surface area of the composite figure is $410\ m^{2}$

Step-by-step explanation:

we know that

The surface area of the composite figure is equal to the surface area of the rectangular prism of the bottom plus the lateral area o the rectangular prism of the top

Step 1

Find the surface area of the rectangular prism of the bottom

The surface area is equal to

$SA=2B+Ph$

Find the area of the base B

$B=10*10=100\ m^{2}$

$P=4*10=40\ m$

$h=3\ m$

substitute

$SA=2(100)+40(3)=320\ m^{2}$

Step 2

Find the lateral area of the rectangular prism of the top

The lateral area is equal to

$LA=Ph$

$P=2*(4+5)=18\ m$

$h=5\ m$

substitute

$LA=18(5)=90\ m^{2}$

Step 3

Find the surface area of the composite figure

$320\ m^{2}+90\ m^{2}=410\ m^{2}$

8 0

2 years ago

The area of circle B is 16 times greater than the area of circle A. Which of the following statements is true?

valina [46]

The answer is A. It says that circle b is 16 times greater so yeah its A.

5 0

2 years ago

I am bored so I just want to give you free brainy points, here you go you deserve them....... and have a good day ahead :D

BaLLatris [955]

Answer:

Bro wht is this la thanks anyways

Step-by-step explanation:

You are good eh I'm a newbie welp just gotta keep on answering

4 0

2 years ago

Read 2 more answers

Drag each pair of equations to show if the system has no solutions, one solution, or infinitely many solutions.

Vsevolod [243]

Remark

Please number your pairs of equations going from left to right. The pair on the extreme left is (1) and the pair on the extreme right is (5).

(1)

If you multiply to top member of the pair by 2, you will get the bottom equation of the pair. What that tells you is that there are many (infinite) numbers of solutions.

(y = 3x + 4) * 2 remove the brackets.

2y = 6x + 8 Exactly the same equation as the bottom one = infinite solutions.

(2)

If the slopes are the same (both are -1) and the y intercepts are different (0,-2) and (0,-6) then the lines are parallel (they never meet) and have no solutions.

(3)

If the slopes are different, there is one solution. (9 and 1) There is one solution.

(4)

Four gives 1 solution as well at 0,0. That is because the slopes are different.

(5)

trick question. the slopes are quite different. one is 0 and the other is undefined. They meet at one point.(-6,-3). I solution.

4 0

3 years ago

Someone please help me I'm confused​

Someone please help me I'm confused