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Contact [7]
3 years ago
11

Evaluate: 2^-2 x (13x3)-5^3

Mathematics
2 answers:
Lapatulllka [165]3 years ago
6 0

2^-2 x (13x3)-5^3

1/ (2^2) * 39 - 125

1/4 *39 -125

39/4 -125

9 3/4 - 125

factor out -1

- (125-9 3/4)

borrow to subtract the fraction

- (124 4/4 - 9 3/4)

- (115 1/4)

-115 1/4

Rainbow [258]3 years ago
3 0

Answer:

-115.25

2^-2 x (13x3)-5^3

2^-2 x (39)- 5^3

2^-2 x (39)- 125

0.25 x (39) - 125

9.75 - 125

-115.25




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Answer:

80 cubes

Step-by-step explanation:

volume of one small cube = 1 /2 × 1 / 2 × 1 / 2

= 1 / 8cm^3

let x be the number of cubes needed

1 / 8 × x = 10

x = 10 × 8

x = 80 cubes

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3 years ago
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Nadusha1986 [10]
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8 0
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PTG has side lengths of 18 cm, 27 cm, and 13 cm. which type of triangle is PTG? The answer is obtuse.
Verizon [17]
To know what kind of triangle is it. use the pythagorean theorem:
A^2 + B^2 = C^2,
where C is the longest side of the triangle 
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if A^2 + B^2 < C^2 it is obtuse triangle

18^2 + 13^2 ? 27^2
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3 0
3 years ago
Thank you so much!! If u get this right I'll mark you!
Semenov [28]

Hi! I hope you are having a great day! So looking here at this question I do so humbly believe that your answer is Number to and or B. all numbers Less than 7. <em>(seven) ==> ♥</em>

Explanation for Q.A.:

  1. The sign is to the right (<)
  2. If x = < 7 then it is evidently going to be B. (LOL)
  3. You are, Awesome! and I am to so yea... It is going to be right! trust me.

I hope that this is helpful to you! I also pray that you get a 100% Good luck.`♥

4 0
3 years ago
What is the value of b?<br><br> ​0.4(3b+10)=19
Sergio039 [100]

Answer:

12.5

Step-by-step explanation:

Step 1:

0.4 ( 3b + 10 ) = 19     Equation

Step 2:

1.2b + 4 = 19       Multiply

Step 3:

1.2b = 15    Subtract 4 on both sides

Step 4:

15 ÷ 1.2    Divide

Answer:

b = 12.5

Hope This Helps :)

7 0
3 years ago
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