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Pani-rosa [81]
3 years ago
14

A crate made of wood measures 50 cm wide, 70 cm long, and 40 cm tall. Which unit of measurement should be used to figure out the

surface area of the crate? A. cm2 B. cm3 C. cm
Mathematics
1 answer:
saveliy_v [14]3 years ago
8 0
Surface area is the area of all the sides added up. If you were to unfold all the areas and make it flat (2-D), area is cm^{2}.

Volume would be cubed because it's 3-D
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5x^2 +3 = -122 a. no solution b. -5 c. +‐5 d. +- 25​
Finger [1]

Answer:

I put it in the calc and it got

x=5i,−5i

6 0
3 years ago
Read 2 more answers
Please answer this for me.
Nastasia [14]

Answer:

(x + 5)**2 + (y + 2)**2 = 25

Step-by-step explanation:

We know that the general equation for a circle is ( x - h )^2 + ( y - k )^2 = r^2, where ( h, k ) is the center and r is the radius. The graph shows the center at (-5, -2), and the radius of 5. So plugging this in

(x - -5)**2 + (y - - 2)**2 = 5**2

(x + 5)**2 + (y + 2)**2 = 25

6 0
2 years ago
Toby bought 8 hotdogs and 5 fries. It cost $34.00
ruslelena [56]

Answer:

Each hot dog = $3

Each french fry = $2

Step-by-step explanation:

First, lets define our variables:

x = Hotdog

y = fries

Next, you need to set up a cost equation for both Toby and Bernie:

8x + 5y = 34

2x + 6y = 18

Now, we need to isolate one of the variable:

2x + 6y = 18

2x = 18 - 6y

x = 9 - 3y

Next, we need to insert this equation back into the first equation (8x+5y = 34) to find the cost of y (fries):

8x +5y = 34

8 (9-3y) + 5y = 34

72 - 24y + 5y = 34

72 - 19y = 34

19y = 38

y or fries = $2

Finally, we need to find the cost of each hotdog by using the cost of fries ($2) in one of the formulas:

2x + 6y = 18

2x + 6(2) = 18

2x + 12 = 18

2x = 6

x or hotdog = $3

I hope this helps!

-TheBusinessMan

6 0
3 years ago
Miranda painted the 4 walls of her rectangular room. Her room measures
4vir4ik [10]

Answer: I think it is 1572 sq feet

Step-by-step explanation:

Lxwxh

14x13x9=1638

Window is 4x4.5=18

Door 1 is8x3=24

Door 2 8x3=24

Since the doors and window are not included in what was painted you need to subtract those totals from the room.

So, 1638-18=1620

1620-48(two doors)=1572 sq feet

6 0
3 years ago
You randomly select a card from a 52-card deck. What is the probability that the card is
krek1111 [17]

Answer: 39/52 or 3/4 or .75

Step-by-step explanation:

52-13=39

39 cards are not clubs

5 0
2 years ago
Read 2 more answers
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