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3 years ago

Explain how to solve the equation 2(4x - 11) + 9 = 19

Mathematics

2 answers:

pogonyaev3 years ago

7 0

$2(4x-11)+9=19 \\ \\ 8x-22=19-9 \\\ \\ 8x-22=10 \\ \\ 8x=10+22 \\ \\ 8x=32 \\ \\ \boxed{x=\frac{32}{8}=4}$

Alika [10]3 years ago

4 0

2(4x-11)+9=19 -- expand brackets multiply inner by. Outer terms
8x-22+9=19 -- combine like terms
8x-13=19 -- add 13
8x=32 -- divide by 8

x=4

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Freida earns $5.25 per hour and time-and-a-half for overtime for all hours over 40 hours. How much did she earn the week she wor

nikdorinn [45]

Answer:

Total earned= $273

Step-by-step explanation:

Giving the following information:

Regular labor hours= $5.25

Overtime labor hours= $5.25*1.5= $7.875

To calculate the total earned, we need to use the following formula:

Regular labor hours= 40*5.25= 210

Overtime labor hours= 8*7.875= 63

Total earned= 210 + 63

Total earned= $273

8 0

3 years ago

PLEASE HURRY THIS IS DUE IN 20MIN

OverLord2011 [107]

This is not my answer I found it from another brainly

From the beginning we know we are dealing with two different rates. Distance is equal to (Speed X Time). We have two different speeds though. We will call the min speed = x and the max speed = y. With those two ideas in place we can make two equations for both Tony and Rae.

Tony:

2x+3.5y=355

Rae:

2x+3y=320

Now you can solve the equations by subtracting Rae's equation from Tony's

.5y=35 solve for y and you get 70

Now plug that y value back into either equation and you can solve for x. I'll use Rae's distance:

2x+3(70)=320

x=55

6 0

3 years ago

Use the eqation to solve for how many miles "m" the person rode their bike after "t" time.

Svetllana [295]

Answer:

Step-by-step explanation:

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5 0

2 years ago

One model of Earth's population growth is P(t)= 64/(1+11e^0.8t)

Pepsi [2]

Answer:

A. In 1991, there were 5.74 billion people

D. The carrying capacity of Earth is 64 billion people

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5 0

3 years ago

Find the number of positive integers less than 100,000 whose digits are among 1, 2, 3, and 4. Hint consider the

Verdich [7]

Answer:

1364 is the number of possibilities for positive integers less than 1,00,000.

Step-by-step explanation:

1. 5 digit numbers:

We have 5 places here, and each place can have 4 options because repetition is allowed.

So, total number of possibilities for 5 digit numbers:

$4 \times 4 \times 4 \times 4 \times 4\\ \Rightarrow 1024$

2. 4 digit numbers:

We have 4 places here, and each place can have 4 options because repetition is allowed.

So, total number of possibilities for 4 digit numbers:

$4 \times 4 \times 4 \times 4 \\ \Rightarrow 256$

3. 3 digit numbers:

We have 3 places here, and each place can have 4 options because repetition is allowed.

So, total number of possibilities for 3 digit numbers:

$4 \times 4 \times 4 \\ \Rightarrow 64$

4. 2 digit numbers:

We have 2 places here, and each place can have 4 options because repetition is allowed.

So, total number of possibilities for 2 digit numbers:

$4 \times 4 \\ \Rightarrow 16$

5. 1 digit numbers:

We have 1 place here, and each place can have 4 options because repetition is allowed.

So, total number of possibilities for 1 digit numbers:

$4$

We can add all the above possibilities to find the total.

So, number of positive integers less than 100,000 whose digits are among 1, 2, 3, and 4 = 1024 + 256 + 64 + 16 + 4 = 1364

3 0

3 years ago