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3 years ago

A cube has a side length of 13 millimeters.What is the surface area of the cube?

1 answer:

wel3 years ago

8 0

Surface area of a cube is n^2, n being the measurment of any one side of the cube. In this case, 13x13=169, so the answer is 169 mL^2.

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HELP PLEASEEEEEEEEEEE

professor190 [17]

Question 5:
x/3=6
x=3(6)
x=18

Question 4:
2.3k=4.83
k=4.83/2.3
k=2.1

Question 6:
y=3/4-1/2
y=1/4

Question 2:
8r=24
r=3

Hope this helps!! :)

4 0

3 years ago

Please help! Find the surface area of the composite figure

Anni [7]

Answer:

Step-by-step explanation:

area of base=6×6=36 m²

surface area of four walls=4×6×12=144 m²

area of top= area of four triangles=4×1/2×6×5=60 m²

total surface area=36+144+60=240 m²

3 0

3 years ago

Nina purchased apples and strawberries. She purchased a total of 9 pounds of fruit and spent a total of $16.35. Strawberries cos

irina [24]

Answer:

4 pounds of strawberries and 5 pounds of apples are bought.

Step-by-step explanation:

Given:

Total number of pounds of fruit = 9 pounds

Total money spent = $16.35

Cost of 1 pound of strawberry = $1.60

Cost of 1 pound of apple = $1.99

Let 'x' pounds of strawberries and 'y' pounds of apples are bought.

So, as per question:

The sum of the pounds is 9. So,

$x+y=9\\\\y=9-x----1$

Now, total sum of the fruits is equal to the sum of 'x' pounds of strawberries and 'y' pounds of apples. So,

$1.60x+1.99y=16.35----2$

Now, plug in the 'y' value from equation (1) in to equation (2). This gives,

$1.60x+1.99(9-x)=16.35\\\\1.60x+17.91-1.99x=16.35\\\\Combining\ like\ terms, we get:\\\\1.60x-1.99x=16.35-17.91\\\\-0.39x=-1.56\\\\x=\frac{-1.56}{-0.39}=4\ pounds$

Now, from equation 1, we have:

$y=9-4=5\ pounds$

Therefore, 4 pounds of strawberries and 5 pounds of apples are bought.

4 0

3 years ago

PLEASE HELP

ser-zykov [4K]

Answer:

f(x)=-5x+1

Step-by-step explanation:

i hope this works for you

7 0

3 years ago

Find the mean of the integers: 7,-9,9,-7,0

Aleks04 [339]

Step-by-step explanation:

Add all of the numbers together

7 + 9 + 0 + (-9) + (-7)

simplify it down to:

(7+9+0)= 16

-9 + (-7)= - 16

So, -16 + 16 = 0

then divide 0 by 5 to get the answer of 0

To find the mean you have to add all of the numbers together and then divide by the amount of numbers that you have.

7 0

3 years ago