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Triss [41]
3 years ago
7

Evaluate 4x2 +3 when x=5

Mathematics
2 answers:
luda_lava [24]3 years ago
8 0

Answer:

43

Step-by-step explanation:

4(5)2 +3

(20)2+3

40+3

43

Molodets [167]3 years ago
7 0

Answer:

103

Step-by-step explanation:

We substitute x with 5:

4(5)^2+3

Solve the exponent first:

5^2 = 25

<em>Note: We are using order of operations (consecutively)</em>

  1. <em>Parentheses </em>
  2. <em>Exponents</em>
  3. <em>Multiplication</em>
  4. <em>Division</em>
  5. <em>Addition </em>
  6. <em>Subtraction</em>

Multiply:

25 * 4 = 100

Add:

100 + 3 = 103

Our answer is 103

<em />

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Answer this equation
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Answer:

The solution to the box is

a = 2.1

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Step-by-step explanation:

To answer the equation, we simply name the boxes a,b,c and d.

Such that

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8 - a - c = 5

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b = 8 - 2.1

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Substitute 0.9 for c

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d * 0.9/0.9 = 9/0.9

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