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barxatty [35]
3 years ago
6

a) work out the value of 4^3-5^2 b) work out the value of 6^2+3^3​

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
5 0

The answer of the given questions

a) 39 and b) 63

Step-by-step explanation:

Here are the solutions of given questions

a) 4^{3} -5^{2}

=64-25

=39

b) 6^{2} +3^{3}

= 36+27

= 63

ahrayia [7]3 years ago
3 0

Answer:

(a) 39

(b) 63

Step-by-step explanation:

(a) 4^3-5^2

In this kind of equation, ensure that the square on each of the figures is well treated

Deal with the square first before dealing with the given equation

Here it's goes

4^3 means cube of 4 which means 64

5^2 means square of 5 which is 25

Back to the question

4^3-5^2

64-25

=39

Therefore the final answer is 39

(b)6^2+3^3

Which means 6^2 square of 6 and it equals to 36

3^3 means cube of 3 which equals to 27

Back to the question

6^2+3^3

36+27

=63

Therefore the final answer is 63

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Step-by-step explanation:

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2 years ago
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Solve for u. u+1/4=-4/5
DedPeter [7]

Answer:

u = (-21)/20

Step-by-step explanation:

Solve for u:

u + 1/4 = (-4)/5

Put each term in u + 1/4 over the common denominator 4: u + 1/4 = (4 u)/4 + 1/4:

(4 u)/4 + 1/4 = -4/5

(4 u)/4 + 1/4 = (4 u + 1)/4:

1/4 (4 u + 1) = -4/5

Multiply both sides of (4 u + 1)/4 = (-4)/5 by 4:

(4 (4 u + 1))/4 = (-4)/5×4

4×(-4)/5 = (4 (-4))/5:

(4 (4 u + 1))/4 = (-4×4)/5

(4 (4 u + 1))/4 = 4/4×(4 u + 1) = 4 u + 1:

4 u + 1 = (-4×4)/5

4 (-4) = -16:

4 u + 1 = (-16)/5

Subtract 1 from both sides:

4 u + (1 - 1) = (-16)/5 - 1

1 - 1 = 0:

4 u = (-16)/5 - 1

Put (-16)/5 - 1 over the common denominator 5. (-16)/5 - 1 = (-16)/5 - 5/5:

4 u = (-16)/5 - 5/5

-16/5 - 5/5 = (-16 - 5)/5:

4 u = (-16 - 5)/5

-16 - 5 = -21:

4 u = (-21)/5

Divide both sides by 4:

u = ((-21)/4)/5

5×4 = 20:

Answer:  u = (-21)/20

3 0
3 years ago
Can someone please help me on this and can u show your work please......#s 1 and 2
Nikitich [7]
45 cookies will serve 15 students.

You would multiply 15 by 2 that would give you 30, therefore you multiply 45 by 2 which will be 90.

90 cookies will serve 30 students
6 0
3 years ago
I need help is due in 15 minute he’ll pls
aleksley [76]

Answer:

3x - 2 = 4(2x-8)

3x- 2 = 8x- 32

3x-8x = -32+2

-5x = -30

x = -30/-5

x = 6

7 0
3 years ago
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