Evaluate
74 x 115 x 25
24
and express the answer in the exponential form.
121 < (14)
THE FIRST RIGHT ANSWER WILL BE MARKED AS BRAINLIEST AND FOLLOW AND THANKS
Answers
Answer:
The short notation 104 stands for the product 10×10×10×10. Here ‘10’ is called the base and ‘4’ the exponent. The number 104 is read as 10 raised to the power of 4 or simply as the fourth power of 10. 104 is called the exponential form of 10,000.
The other portion of the chapter gives insight about Laws of exponents. This particular section is divided into several sub-sections:
Multiplying Powers with the Same Base
Dividing Powers with the Same Base
Taking Power of a Power
Multiplying Powers with the Same Exponents
Dividing Powers with the Same Exponents
Numbers with exponent zero
Once the student has come across various laws of exponents miscellaneous examples using the laws of exponents can be studied.
This is followed by Decimal Number System and expressing large numbers in the standard form.
Any number can be expressed as a decimal number between 1.0 and 10.0 including 1.0 multiplied by a power of 10. Such a form of a number is called its standard form.
The chapter includes 3 unsolved exercises and various solved examples.
The chapter comprises a summary in which all the important concepts of the chapter- Exponents and Powers are mentioned.
Page No 252:
Question 1:
Find the value of:
(i) 26 (ii) 93
(iii) 112 (iv)54
ANSWER:
(i) 26 = 2 × 2 × 2 × 2 × 2 × 2 = 64
(ii) 93 = 9 × 9 × 9 = 729
(iii) 112 = 11 × 11 = 121
(iv)54 = 5 × 5 × 5 × 5 = 625
Page No 252:
Question 2:
Express the following in exponential form:
(i) 6 × 6 × 6 × 6 (ii) t × t
(iii) b × b × b × b (iv) 5 × 5 × 7 ×7 × 7
(v) 2 × 2 × a × a (vi) a × a × a × c × c × c × c × d
ANSWER:
(i) 6 × 6 × 6 × 6 = 64
(ii) t × t= t2
(iii) b × b × b × b = b4
(iv) 5 × 5 × 7 × 7 × 7 = 52 × 73
(v) 2 × 2 × a × a = 22 × a2
(vi) a × a × a × c × c × c × c × d = a3 c4 d
Answer:
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Step-by-step explanation:
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your answer is 240500