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2 years ago

If h (x) = -5x-7 then what is h (x-1) ?

Mathematics

1 answer:

goldenfox [79]2 years ago

6 0

Answer:

h(x - 1) = -5x - 2

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Terms/Coefficients

Functions

Function Notation

Step-by-step explanation:

Step 1: Define

Identify

h(x) = -5x - 7

Step 2: Find

Substitute in x [Function h(x)]: h(x - 1) = -5(x - 1) - 7
[Distributive Property] Distribute -5: h(x - 1) = -5x + 5 - 7
Combine like terms: h(x - 1) = -5x - 2

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2 years ago

Read 2 more answers

Joel has a goal to practice his clarinet for 4 hours per week. The list 5 1below shows the number of hours Joel has practiced so

Reil [10]

Answer:

Joel need to practice this week = $\frac{3}{4}$ hour

Step-by-step explanation:

P.S - the exact question is -

As given

Total practice goal of Joel = $4\frac{1}{2}$ hours

He practiced on : Monday - $1\frac{1}{2}$ hours

Wednesday - $1\frac{1}{4}$ hours

Thursday - 1 hour

Let the remaining practice = x hours

⇒ Total practice = $4\frac{1}{2}$ hours

⇒ $1\frac{1}{2}$ + $1\frac{1}{4}$ + 1 + x = $4\frac{1}{2}$

⇒ 1 + $\frac{1}{2} + 1 + \frac{1}{4} + 1 + x = 4 + \frac{1}{2}$

⇒3 + x - 4 = $\frac{1}{2} - \frac{1}{2} - \frac{1}{4}$

⇒x - 1 = $-\frac{1}{4}$

⇒x = $-\frac{1}{4} + 1 = \frac{-1 + 4}{4} = \frac{3}{4}$

⇒x = $\frac{3}{4}$ hour

∴ we get

Joel need to practice this week = $\frac{3}{4}$ hour

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