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Mariulka [41]
3 years ago
7

Evaluate the algebraic expression.

Mathematics
2 answers:
Tanya [424]3 years ago
5 0

Answer:

-15

Step-by-step explanation:

m/n - 3

-12 / 1 - 3

-12 - 3

-15

Can I get a crown?

LuckyWell [14K]3 years ago
5 0
-12 \ 1 -3 = -12 -3= -15

Pretty much put in the values for the letters. Then divide -12 by 1 which is -12 and subtract -3 from -12 which equals to -15
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Suppose that 6 people sitting in a enclosed room are each generating about 400 BTUs of body heat per hour. If the room is 20 ft
Crazy boy [7]

Answer:  B) 4 BTUs/ft^3

Step-by-step:

For a cuboid of length L, width W and height H, the volume is:

V = L*W*H

In this case, we have:

L = 20ft

W = 15ft

H = 10ft

Then the volume of the room is:

V = 20ft*15ft*10ft = 3000 ft^3

Now we have 6 people, and each generate 400 BTUs per hour.

Then in total, they generate:

6*400 BTUs per hour

2400 BTUs per hour.

Now we want to find the BTUs per ft^3 produced in 5 hours.

Then if they generate 2400 BTUs per hour, in 5 hours they generate a total of:

5*2400 BTUs = 12000 BTUs

Now we take the quotient between the total BTUs and the volume of the room:

Q = (12000 BTUs)/(3000 ft^3) = 4 BTUs/ft^3

The correct option is B.

8 0
3 years ago
A wholesaler sells rolls of fruit snacks in two sizes of bags. The table shows the number of rolls that come in each bag. Write
Elden [556K]

Answer:

3 × 10 = 30 2 ×5 = 10

Step-by-step explanation:

30 + 10 = 40 rolls

4 0
3 years ago
−7(−2x+6)<br><br><br> Select one:<br><br> −9x−42<br><br> 14x+6<br><br> 14x−42<br><br> −14x−42
saveliy_v [14]

Answer:

14x-2 is answer

Step-by-step explanation:

may be this is helpful!

5 0
3 years ago
Read 2 more answers
In Exercises 10 and 11, points B and D are points of tangency. Find the value(s) of x.<br>​
Lemur [1.5K]

In both cases,

AB^2=AD^2

(as a consequence of the interesecting secant-tangent theorem)

So we have

10.

(4x+7)^2=(6x-3)^2

16x^2+56x+49=36x^2-36x+9

20x^2-92x-40=0

5x^2-23x-10=0

(5x+2)(x-5)=0\implies\boxed{x=5}

(omit the negative solution because that would make at least one of AB or AD have negative length)

11.

(4x^2-18x-10)^2=(x^2+x+4)^2

16x^4-144x^3+244x^2+360x+100=x^4+2x^3+9x^2+8x+16

15x^4-146x^3+235x^2+352x+84=0

(x-7)(3x+2)(5x^2-17x-6)=0\implies\boxed{x=-\dfrac23\text{ or }x=7}

(again, omit the solutions that would give a negative length for either AB or AD)

7 0
3 years ago
In the morning the temperature is 0 F. It is drop out rate of 3° perh what is the temperature after five hours
r-ruslan [8.4K]

Answer:

-15 degrees

Step-by-step explanation:

3 times 5 is 15 and its negative because it says it DROPS every hour and its taking the temp every 5 hrs

6 0
3 years ago
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