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sesenic [268]
2 years ago
15

Please helpppp

Mathematics
1 answer:
frutty [35]2 years ago
6 0

The statement is true is: A 16,000-BTU air conditioner meets the manufacturer recommendation.

<h3>Recommended BTU</h3>

Option A

BTUs=16,000/(20 feet×20 feet×8 foot)

BTUs=16,000/3200 feet

BTUs=5 BTUs

Option B

BTUs=14,000/(10 feet×20 feet×8 foot)

BTUs=14,000/1600 feet

BTUs=8.75 BTUs

Option C

BTUs=20,000/(20 feet×40 feet×8 foot)

BTUs=20,000/6400 feet

BTUs=3.125 BTUs

Option D

BTUs=12,000/(15 feet×10 feet×10 foot)

BTUs=12,000/1500 feet

BTUs=8 BTUs

Based on the calculation above only option A with 5 BTUs fall between 4 and 6 BTUs.

Therefore the statement is true is: Option A.

Learn more about BTUs here:brainly.com/question/10486668

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What expression is equivalent to x^2 - 49
Sati [7]

Answer:

(x + 7)(x - 7)

Step-by-step explanation:

We need to factor [ x² - 49 ]

The middle number is 0 and the last number is -49.

Factoring is when we fill in the blanks for [ (x + _)(x + _) ]

We need to know what goes in the blanks, we need to know:

  • two numbers that add to get 0
  • two number that multiplied together get -49

We can try 7 and -7.

7 + (-7) = 0

7 * (-7) = -49

This works, so fill in the blanks for the factor.

(x + 7)(x + (-7))

(x + 7)(x - 7)

Best of Luck!

7 0
3 years ago
Solve 58x29 using an area model
trasher [3.6K]
Ugh I know the answer but like it wont let me take a pic of how to do it and the answer ugh sorry I will answer it as soon as I can
3 0
3 years ago
Sketch the graph of y= (x-1)^2+2
yarga [219]
That's what the graph should look like and I wrote the rest on there just incase you needed any other information.

7 0
4 years ago
Which expression is equivalent to 3(5 + 4)? <br> 15 + 12 <br> 15 + 4 <br> 8 + 7 <br> 8 + 4
Montano1993 [528]
Once you distribute the 5 15+12 is equivalent
4 0
3 years ago
Read 2 more answers
Ahmed learned: "To multiply a whole number by ten, just place a zero at the end of the number." For
Gala2k [10]

Answer:

a) 2x^4 + 8x^3 + x^2 + 3x

b) evaluate this polynomial at x = 10

Step-by-step explanation:

Hi!

a)

The product of a sum is the sum of the products, having said this:

(2x^3 + 8x^2 + x + 3) \times x = 2x^4 + 8x^3 + x^2 + 3x

b)

We can use the result from part a and consider x = 10.

First lets take the first polynomial

2x^3 + 8x^2 + x + 3 = 2(10)^3 + 8 (10)^2+10^1+3(10)^0

Knowing that every number (excepting probably 0, which could be undefined for some or 1 for others) to the power of 0 is one:

2x^3 + 8x^2 + x + 3 = 2(1000)+ 8(100)+10+3(1) = 2813

Which is the initial number

Now lets conisder the product of the polynomial times x and evaluate it at x=10:

(2x^3 + 8x^2 + x + 3) \times x = 2x^4 + 8x^3 + x^2 + 3x

(2(10)^4 + 8(10)^3 + 10^2 + 3(10) = 2 (10000) + 8(1000) + 100 + 3(10)

= 28130

We can now see that teh rule is treu because we can see the whole number as a sum of numbers from 0 to 9 multiplied by a power of 10, and when it is multiplied by 10, each power increases by one, and at the end, the final result is adding a zero at the end

6 0
3 years ago
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