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AnnZ [28]
2 years ago
12

What is the unit digit of the cube of the number 1127​

Mathematics
1 answer:
Solnce55 [7]2 years ago
7 0

Answer:

3.

Step-by-step explanation:

As the last digit is 7 the unit digit of it's cube is the last digit of 7^3.

7^3 = 7 * 49 = 343 so the answer is 3.

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What is the factored form of the expression 144x2 - 49?
PIT_PIT [208]

Answer:

A

Step-by-step explanation:

Difference of squares: (a^2 - b^2) = (a - b)(a + b)

(144x^2 - 49) = (12x - 7) (12x + 7)

6 0
2 years ago
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A man is 32 years older than his daughter and the product of their ages is 320..
gogolik [260]
A) the man is 40 and the daughter is 8
b)in 8 years when the man is 48 and the daughter is 16
8 0
3 years ago
Plz Help...................
joja [24]

Answer:

55.5 u^2

Step-by-step explanation:

Split the quadrilateral into 2 triangles. There are two ways to do this, but I'm only doing one of them.

On the 5-11 triangle, use the two of the lengths and plug them into the triangle area formula. (L x W)/2 = A

5-11 triangle area: 27.5

Do the same for the 7-8 triangle. Plug it into the same formula.

7-8 triangle area: 28

Add the two areas. 27.5 + 28 = 55.5

8 0
3 years ago
Luke has 48 books. He puts 7 books in a box. How many boxes can he fill? Explain how you interpreted the remainder
Damm [24]
He can fill 6 boxes. 48 / 7 = 6R6.

I interpreted the remainder by removing the remainder to get the answer.
3 0
3 years ago
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New streetlights will be installed along a section of the highway. The posts for the streetlights will be 7.5 m tall and made of
SIZIF [17.4K]
First, we determine the volumes of the posts may it be cylindrical in shape or rectangular prism. 

(A) cylindrical:
                         ( π(26.7/100)² - π(24.2/100)²)*(7.5) = 0.3 m³
(B) rectangular prism:
                          (40/100)²(7.5) - (35/100)²(7.5) = 0.28125 m³

Then, we calculate for the amount of substance
 (A) cylindrical:   (0.3 m³)(2700 kg/m³) = 810 kg
 (B) rectangular prism : (0.28125 m³)(2700 kg/m³) = 759.375 kg

Then, calculate for the costs
 (A) (810 kg)($0.38/kg) = $307.8
 (B) (759.375 kg)($0.38/kg) = $288.56

Thus, the answer for A is rectangular post 
B. About $19.24 can be saved. 
6 0
2 years ago
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