3 years ago

Write anyFive Places where ICTtools can be used.

Mathematics

2 answers:

alexandr1967 [171]3 years ago

7 0

Answer:

A Computer, The Internet, A Printer, Scanners, and Mobile Devices

Step-by-step explanation:

tatiyna3 years ago

5 0

At home, banks, schools, shops and hospitals

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How to work out 5-[5+8÷4-1]

rodikova [14]

PEMDAS (order of operations rules) require that we perform operations in a certain order: anything inside parentheses first, followed by any exponentiation, followed by mult. and div., finally followed by addition and subtraction.

Thus, we must evaluate 5+8÷4-1 first, as it's inside parentheses. Focusing on the division first, we get 5+8÷4-1 = 5 + 2 - 1, or 6.

Then we have 5 - [6], which comes out to -1.

6 0

3 years ago

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Evaluate 3x² - 4xy + 2y² - 1 for x = - 3 and y = 5

zhannawk [14.2K]

Answer:

$3x^{2} - 4xy + 2y { }^{2} - 1 \\ 3 \times ( - 3) { }^{2} - 4 \times ( - 3) \times 5 + 2 \times 5 {}^{2} - 1 \\ (3 \times 9) - ( - 60) + 50 - 1 \\ 27 + 60 + 50 - 1 \\ 165$