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SashulF [63]
3 years ago
8

Which of the following is an example of a perfect square trinomial?

Mathematics
1 answer:
Aliun [14]3 years ago
4 0

Answer:

c

Step-by-step explanation:

A perfect square trinomial is always in the form

(a+b)(a+b)= a^{2} +2ab+b^2

ie. (x+4)(x+4)= x^{2} +8x+16

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Masteriza [31]

The problem statement is not clear regarding which money is invested. We will assume it is the 80% of $8750 that is set aside for future education. That amount is

... 0.80 × $8750 = $7000

If x represents the amount invested at 7%, then the total interest earned is

... (7000 -x)×4% + (x)×7% = 420

... 280 +0.03x = 420

... x = 140/0.03 ≈ 4666.67

$4666.67 was invested at 7%.

$2333.33 was invested at 4%.

5 0
4 years ago
What is the diameter of the following?
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Answer:

12

Step-by-step explanation:

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(x - 9)² + (y - 4)² = 36 ← is in standard form

with r² = 36 ⇒ r = \sqrt{36} = 6

diameter = 2 × r = 2 × 6 = 12

4 0
3 years ago
Using the distributive property rewrite 2x + 16 as a product of two factors
tresset_1 [31]
2(x + 8)
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5 0
3 years ago
I need help. See attachment for detail.
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3 years ago
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Step-by-step explanation:

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