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2 years ago

PLEASE HELP IM BEGGING PLEASEEEE SEE ATTACHED DOCUMENT

Mathematics

1 answer:

ANTONII [103]2 years ago

3 0

Answer:

Step-by-step explanation:

3x-1 = 4x+13

-1=x+13

12=x

3(12)-1

36-1

Answer: 35

Second 5.

I'm not completely sure what this is referring to (please tell me if there is another part for this because there isn't any numbers such as <1 shown on the picture.)

90+40+x=180

130+x=180

50=x

Answer: 50

x+71=90

x=19

Answer: 19

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Callie surveyed 40 students at her school to see how many have dogs and/or cats. She found that 40% of students who have dogs, d

irina [24]

I think you need to show the tablle

6 0

3 years ago

There are approximately 113 million TVs in the United States. Each uses, on average, 76 W of power and is turned on for 6.3 hour

ioda

Answer:

$76 W *\frac{1kW}{1000 W}= 0.076 kW$

$0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}$

$113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh$

And finally we can convert this into money like this:

$54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6$

So they spent every day approximately in total $ 4815291.6 dollars

Step-by-step explanation:

For this case we can convert the average power into Kw like this:

$76 W *\frac{1kW}{1000 W}= 0.076 kW$

Now on average we know that one person use on average this power over 6.3 hours per day so then we have the following consumption rate:

$0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}$

And now we know the total population so then the total consumption per day would be:

$113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh$

And finally we can convert this into money like this:

$54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6$

So they spent every day approximately in total $ 4815291.6 dollars

6 0

2 years ago

Read 2 more answers

Answer the 3 questions above (in the picture) please!!!

Karo-lina-s [1.5K]

Answer:

1. X = 17/A --- answer is (A)

2. (6, 0.7) (10, 1.9)

3. $10.99D + $9.99 ≤ $100

Step-by-step explanation:

1. AX + 4AX = 51 + 2AX

5AX = 51 + 2AX .... -2AX both side

3AX = 51 .. divide 3A

X = 17/A --- answer is (A)

2. 10y = 3x -11

(2, 0.5): 3*2 -11 = - 5 10y = 10*0.5 = 5 ..... not correct

(4, 1) 3*4 - 11 = 1 10y = 10*1 = 10 ....... not correct

(6, 0.7) 3*6 - 11 = 7 10y = 10*0.7 = 7 .....Correct

(8,2.3) 3*8 -11 = 13 10y = 10*2.3 =23 ..... not correct

(10, 1.9) 3*10 -11 = 19 10y = 10*1.9 = 19 .... correct

3. 1D cost $10.99

D piece cost: $10.99D

Shipping: $9.99

No more than $100: ≤ 100

D piece DVD + Shipping withtotal no more than $100:

$10.99D + $9.99 ≤ $100

5 0

2 years ago

Which of the following expressions is equivalent to 12x - 3 + 2x +13

Maru [420]

Answer:

Are there multiple choice options? If so, please include them. That way I will actually be able to help you :)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

If the domain of f(n) = -4n - 3 is (-1, 1/4,4}, what is the range?

ahrayia [7]

Answer:

$Range= \{1,-4,-19\}$

Step-by-step explanation:

Given

$f(n) = -4n - 3$

$n = \{-1,1/4,4\}$ --- domain

Required

Determine the range

To do this, we simply substitute the values of n in the given expression

So, we have:

$n = -1$

$f(-1) = -4 * -1 - 3 =4 - 3 = 1$

$n = 1/4$

$f(-1) = -4 * 1/4 - 3 =-1 - 3 = -4$

$n=4$

$f(-1) = -4 * 4 - 3 =-16 - 3 = -19$

Hence, the range is:

$Range= \{1,-4,-19\}$

5 0

2 years ago