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3 years ago

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

2 answers:

4 0

Dimensions of a rectangular solid:
a = 4 cm, b = 6 cm, c = 8 cm.
Surface Area = 2 * ( a b + b c + a c ) =
= 2 * ( 4 * 6 + 6 * 8 + 4 * 8 ) =
= 2 * ( 24 + 48 + 32 ) =
= 2 * 104 = 208 cm²
Answer: Its surface area is 208 cm².

kykrilka [37]3 years ago

4 0

Answer:

208 cm^2

Step-by-step explanation:

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What's 8/7 divdied by 5/4?

MrRa [10]

8/7 ÷ 5/4

8/7 • 4/5

32/35

6 0

3 years ago

You are making 6 quarts of

Ivenika [448]

1.5 quarts of 20% fruit juice and 4.5 quarts of 100% fruit juice.

Step-by-step explanation:

Let x be the number of quarts of 100% fruit juice

Let y be the number of quarts of 20% fruit juice

The equation for amount of quarts is ;

x+y=6

x=6-y-------------------equation 1

The equation for the amount of quarts of fruit juice to get 80% fruit juice will be;

x(100%)+y(20%)=80%------however you need to make 6 quarts so divide first portion of equation by 6

{x(100%)+y(20%) }/6=80%

Multiply both parts of the equations by 6

x(100%)+y(20%)=480% --------------equation 2

Use equation 1 in 2

(6-y)(100%)+y(20%)=480%

600-100y+20y=480

600-80y=480

600-480=80y

120=80y

120/80 =y

1.5=y

Use the value of y in equation 1

x=6-y , x= 6-1.5=4.5

So you have,

1.5 quarts of 20% fruit juice and 4.5 quarts of 100% fruit juice.

Learn More

Mixtures equations;brainly.com/question/11898822

Keywords : quarts,party,bottles,punch

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6 0

3 years ago

write a word problem that you can represent with the expression 8÷2/3. draw a model and use equation to show the solution

Mariana [72]

Answer:

The word problem is " In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there".

Step-by-step explanation:

The given expression is

$8\div \frac{2}{3}$

We need write a word problem which is solved by the above expression.

Word problem : In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there.

Solution:

Let the total number student be x.

$x\times \frac{2}{3}=8$

Divide both sides by 2/3.

$x=\dfrac{8}{\frac{2}{3}}$

$x=\dfrac{8\times 3}{2}$

$x=12$

Therefore, the total number of students is 12.

4 0

3 years ago

Write the equation for the linear function. A={(x,y): (0,2)(-2,0)(-3,1)...}

Kay [80]

Answer:

y=x+2

Step-by-step explanation:

To find the equation of a line or linear function, you need at least two points that lie on the line. This is to find the slope or gradient of the line if it's not given. Let's use the two points (0,2) and (-2,0). The first coordinate in each point is X and the second is the y coordinate.

GRADIENT/SLOPE=[y1-y2]/[x1-x2]

=[2-0]/[0-2]=1

The equation of a linear function is given. by Y-y1=m(X-x1)

Y-2=1(X-0)

Y=X+2

VERIFICATION OF SOLUTION

You may want to verify whether you are right by substituting values of x to see if you can obtain corresponding y values.

Example: if x=0, y=0+2=2.This confirms first point

6 0

3 years ago

Mr. Keller bought a car for $20,000. A study shows that a car will depreciate (go DOWN in value) by 15% each year. How much is M

Aneli [31]

Average annual value lost: $7,390.65First-year depreciation: $3,000.00Total depreciation: $11,125.89Total depreciation percentage: 55.63%Value of vehicle at end of ownership period: $8,874.11
see attachment for graph

7 0

4 years ago