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8090 [49]
4 years ago
11

8 x - 4 (5 - x) = -44

Mathematics
1 answer:
Sphinxa [80]4 years ago
3 0

8 x - 4 (5 - x) = -44

mutiply the bracket by -4

(-4)(5) = -20

(-4)(-x)= 4x

8x-20+4x= -44

8x+4x-20= -44 ( combine like terms )

12x-20= -44

move -20 to the other side

sign changes from -20 to +20

12x-20+20= -44+20

12x= -44+20

12x= -24

divide both sides by 12

12x/12= -24/12

Answer: x= -2

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5-7 write as an addition problem by adding the oppisite __+__.
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Do you mean 5+7?
If so, that equals 12!
8 0
4 years ago
Can someone help me & explain, please?
GenaCL600 [577]

Put the numbers in the data set in order from smallest to largest:

44, 45, 45, 47, 49, 50, 50, 51, 55, 55, 55, 56


The smallest number is 44, the largest is 56, so the outside lines need to be above those numbers.


Both A and B have that.


Now find the median ( the average of the middle two numbers)

The middle two numbers from the list are 50 and 50 so the median would be (50 +50) /2 = 100/2 = 50

The middle line inside the rectangle needs to be above 50.

This makes the answer A.


7 0
3 years ago
Tom keeps sticky notes in a box that is the shape of a cube each side of the box is 4 inches what is the volume of the box
den301095 [7]
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V=a³
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7 0
4 years ago
10) The temperature recorded at 12 noon was 15°C above zero. If it decreases at the rateof 3°C per hour until midnight, at what
aalyn [17]

Answer:

at 8 pm the temperature will be -9 degrees. and at midnight the temperature will be negitive twenty one(-21) degrees

Step-by-step explanation:

the start time is 12 pm and finish is 12 am and every hour your going to subtract 3 from the given degree so 15-3= 12 , 12-3=9 ect.

6 0
3 years ago
Consider the graph and equation, y = 3x, that represent Alonso’s walking speed. What relationship is represented by this equatio
natulia [17]

Answer with explanation:

The equation, y=3 x,

y=Distance traveled

x =Total time

\frac{\text{Distance traveled}}{\text{Time}}=\frac{y}{x}=3\\\\ \frac{dy}{dx}={\text{Rate of change}}={\text{Velocity}}=3 {\text{unit of time}]

Also, in terms of straight line

Slope =3= uniform Velocity

Point (3,9) and (5,15) represents Distance traveled in 3 (unit of time) =9 unit ,and 15 unit=Distance traveled in 5 (Unit of time).

→Alonso is moving with uniform speed=3 (unit of time), as velocity remains constant in the entire process.

5 0
4 years ago
Read 3 more answers
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