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3 years ago

What is the surface area of a cube that measures 3 cm

Mathematics

1 answer:

kifflom [539]3 years ago

8 0

Answer: Surface area= 54

Step-by-step explanation:

To find the surface area of a cube you do 6 times s^2

S is the side length. In this case that is 3 cm. S^2 is 9

So now you do 6 times 9, and that is 54.

So, the surface area is 54.

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Which equation represents the graph ?

Ronch [10]

Answer:

The equation of the line is;

y + 4 = 3(x + 4)

Step-by-step explanation:

The general equation of a line is;

y = mx + b

where m is the slope and b is the y-intercept

To get the equation, let us look at the given intercepts

We have the intercepts at the point (0,5) and (-2,-1)

We have the slope of the line as follows;

m = (y2-y1)/(x2-x1) = (-1-5)/(-2-0) = -6/-2 = 3

So we have the equation as;

y = 3x + b

recall, we have the y-intercept as 5

so the complete equation is;

y = 3x + 5

Now, we can rewrite this as;

y+ 4 = 3(x + 3)

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3 years ago

If lines and and cd are parallel,which if the following statements are true?

faltersainse [42]

Answer:

Step-by-step explanation:

AB ll CD

what grade r u in btw ?

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2 years ago

Malcolm buys a 5/6 pound of black beans and a 3/4 pound bag of pinto beans. How many pounds of beans does Malcolm buy in all?

natulia [17]

Answer:

19/12 or 1 7/12 lbs

5/6 + 3/4

Find a common denominator, aka least common multiple

So, 5/6 becomes 20/24 and 3/4 becomes 18/24

20/24 + 18/24 = 38/24 which simplifies to 19/12 or 1 7/12

6 0

3 years ago

Read 2 more answers

What kind of solution is -4x-4=-7(x+4) ?

natima [27]

~ Simplifying

-4x + -4 = -7(x + 4)

~ Reorder the terms:

-4 + -4x = -7(x + 4)

~ Reorder the terms:

-4 + -4x = -7(4 + x)

-4 + -4x = (4 * -7 + x * -7)

-4 + -4x = (-28 + -7x)

~ Solving

-4 + -4x = -28 + -7x

~ Solving for variable 'x'.

~ Move all terms containing x to the left, all other terms to the right.

~ Add '7x' to each side of the equation.

-4 + -4x + 7x = -28 + -7x + 7x

~ Combine like terms: -4x + 7x = 3x

-4 + 3x = -28 + -7x + 7x

~ Combine like terms: -7x + 7x = 0

-4 + 3x = -28 + 0

-4 + 3x = -28

~ Add '4' to each side of the equation.

-4 + 4 + 3x = -28 + 4

~ Combine like terms: -4 + 4 = 0

0 + 3x = -28 + 4

3x = -28 + 4

~ Combine like terms: -28 + 4 = -24

3x = -24

~ Divide each side by '3'.

x = -8

~ Simplifying

x = -8

8 0

3 years ago

Read 2 more answers

Tavon has a gift card for $ 155 that loses $ 3.50 for each 30-day period it is not used. He has another gift card for $ 135 tha

Zepler [3.9K]

Answer:

A) 40

B) $ 15

Step-by-step explanation:

<u>A)An equation for the number of 30-day periods until the value of the gift cards will be equal</u>

Let x be the number of time periods for which the gift card is not used, then

For the gift card $ 155 if it is not used for x periods, then the amount that will be lost is

155 - 3.50 x---------------------(1)

For the gift card $ 135 if it is not used for x periods, then the amount that will be lost is

135 - 3x---------------------- (2)

Now when both the amount lost is equal

$155 - 3.50x = 135 - 3x$

solving the equation, we get

$155 -135 = -3x + 3.50x$

20 = 0.5x

$x = \frac{20}{0.5}$

x = 40

Thus the value of gift cards will be equal for 40 ,30 day periods.

<u>B)The value of each card be when they have equal value</u>

The two cards will have equal value after 40 30 day periods, this denotes that at this time, the value of each card will be equal.

Then

$155 - 3.50x = 135 - 3x$

substituting x = 40, we get

$155 - 3.50(40)= 135 - 3(40)$

$155 - 140= 135 - 120$

$15 =15$

when they have equal value, the value of each card will be $15

7 0

4 years ago

What is the surface area of a cube that measures 3 cm​

What is the surface area of a cube that measures 3 cm