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bulgar [2K]
3 years ago
6

1/2(a+b)-(a-b)exponent2 when a=18 and b=14

Mathematics
1 answer:
lora16 [44]3 years ago
8 0

Answer:

0

Step-by-step explanation:

Substitute the given values for a and b into the expression

\frac{1}{2}(18 + 14) - (18 - 14)²

= \frac{1}{2} × 32 - 4²

= 16 - 16

= 0

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What is the answer to -6n^2 - 5n - 7 = -8
soldi70 [24.7K]

Answer:

n = \frac{1}{3} , n = \frac{1}{2}

Step-by-step explanation:

6n² - 5n - 7 = - 8 ( add 8 to both sides )

6n² - 5n + 1 = 0 ← in standard form

Consider the product of the factors of the coefficient of the n² term and the constant term which sum to give the coefficient of the n- term

product = 6 × 1 = 6 and sum = - 5

The factors are - 3 and - 2

Use these factors to split the n- term

6n² - 3n - 2n + 1 = 0 ( factor the first/second and third/fourth terms )

3n(2n - 1) - 1(2n - 1) = 0 ← factor out (2n - 1) from each term

(2n - 1)(3n - 1) = 0 ← in factored form

Equate each factor to zero and solve for n

3n - 1 = 0 ⇒ 3n = 1 ⇒ n = \frac{1}{3}

2n - 1 = 0 ⇒ 2n = 1 ⇒ n = \frac{1}{2}

7 0
3 years ago
? x 10 = 6,026.1 what would be the first number
Nadusha1986 [10]

Answer:

602.61

Step-by-step explanation:

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7 0
3 years ago
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san4es73 [151]

Answer:

6^3= 216

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Step-by-step explanation:

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6 0
2 years ago
If you add​ Natalie's age and​ Fred's age, the result is . If you add​ Fred's age to times​ Natalie's age, the result is . Write
Reika [66]

Answer:

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Step-by-step explanation:

8 0
3 years ago
A $55 gild ring costs $58.85 after sales tax is figured in. What is the sales tax percentage?
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