All categories

2 years ago

How to find the surface area

Mathematics

1 answer:

Stolb23 [73]2 years ago

8 0

Answer:

158 in²

Step-by-step explanation:

Surface area

A = 2·(l·w + l·h + w·h)

= 2·(3in·8in + 8in·5in + 3in·5in)

= 2·(24in² + 40in² + 15in²)

= 2·(79in²)

= 158 in²

al3xis

You might be interested in

Simplify this expression. Enter your answers in the boxes. 8.9 – 1.4x + (–6.5x) + 3.4

densk [106]

Answer:

12.3-7.9x

Step-by-step explanation:

8.9+3.4=12.3

-1.4x+(-6.5x)=-7.9x

5 0

2 years ago

Read 2 more answers

How do you do this ? Anyone who know how and can explain this

Murrr4er [49]

Answer:

G. 105.

Step-by-step explanation:

Percentage of cars with 3 or more people

= 15 + 7 + 3

= 25%,

25% of 420

= 0.25 * 420

= 105.

3 0

2 years ago

Round 2.5 to the nearest hundredth...

CaHeK987 [17]

2.5 is already rounded to the nearest hundredth. S it cant be rounded again. Its already rounded by the nearest hundredth.
hope it helps!

5 0

2 years ago

Read 2 more answers

A car dealership pays $8,550 for a car. They markup the price by 20.4% to get the retail price. What is the retail price of the

DochEvi [55]

Answer:

$9802.90

Step-by-step explanation:

$9802.90

Step-by-step explanation:

17.4% = 0.174

So retail price = 8,350 + 8,350 * 0.174

= $9802.90

4 0

2 years ago

Solve the simultaneous equation : 4x+2y=17 3x+2y=14

enot [183]

Answer:

(x, y) = (3, 5/2)

Step-by-step explanation:

$4x+2y=17\\3x+2y=14$

I'll solve by elimination here. If you invert the second equation and add it to the first, 2y and -2y would cancel out.

$4x+2y=17\\-(3x+2y=14)$

Now just add those from top to bottom.

$\rightarrow (4x-3x)+(2y-2y)=17-14\\\rightarrow x=3$

Nothing else needs to be done for that part. Now, you can pick either equation and use the known value of x to solve for y.

$4x+2y=17\\\rightarrow 4(3)+2y=17\\\rightarrow 12+2y=17\\\rightarrow 2y=5\\\rightarrow y=\frac{5}{2}$

(x, y) = (3, 5/2)

6 0

1 year ago