1. Expand the expression: 6 (2k – 3)

Mathematics

1 answer:

Archy [21]3 years ago

8 0

Answer:

12k - 18

Step-by-step explanation:

i used the distributive property to solve. i hope thats what you meant:)

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3. A regular pentagon has a perimeter of 10x + 15. What is the length of che side?

Ivan

Answer:

Step-by-step explanation:

A pentagon has 5 sides. Given that it is a regular pentagon, these 5 sides are equal.

The perimeter is the total length of all the sides of the pentagon. Since these 5 sides are all equal, we can divide the perimeter by 5 to obtain the length of a side of the pentagon.

Perimeter= 10x +15

Length of each side

= (10x +15) ÷5

= 2x +3

5 0

3 years ago

Carla is a waitress at Daybreak Diner and she earns $5 for each hour she works. Last week she earned 148 total including $68 tip

Zigmanuir [339]

Answer: 16 hours

Step-by-step explanation:

Given

Carla earns $\$5$ for each hour she works

Last week she earned $148 total including $\$68$ tip

So, the sum of hourly income and must be equal to the total money earned

Suppose she works for $x$ hours

$\Rightarrow 5x+68=148$

$\Rightarrow 5x=148-68\\\Rightarrow 5x=80\\\Rightarrow x=16\ \text{hours}$

Thus, she works 16 hours last week

5 0

3 years ago

Divide 5 3/4 ÷ 1 1/2

Kipish [7]

The required mixed number is $3\frac{5}{6}$ . The calculations are attached with the solution as an image.

What is a mixed number ?

A bit represented with its quotient and remainder is a mixed bit. For illustration,21/3 is a mixed bit, where 2 is the quotient, 1 is the remainder.
So, a mixed bit is a combination of a whole number and a proper bit. A mixed bit, also called a mixed number, is a whole number and a bit together.
The bit is written to the right of the whole number.
A mixed number is formed by combining three corridor a whole number, a numerator, and a denominator. The numerator and denominator are part of the proper bit that makes the mixed number.