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Makovka662 [10]
3 years ago
10

What is -3x-32=-2(5-4x)

Mathematics
2 answers:
san4es73 [151]3 years ago
5 0

Answer:

x=−2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−3x−32=−2(5−4x)

−3x+−32=(−2)(5)+(−2)(−4x)(Distribute)

−3x+−32=−10+8x

−3x−32=8x−10

Step 2: Subtract 8x from both sides.

−3x−32−8x=8x−10−8x

−11x−32=−10

Step 3: Add 32 to both sides.

−11x−32+32=−10+32

−11x=22

Step 4: Divide both sides by -11.

−11x

−11

=

22

−11

kari74 [83]3 years ago
4 0

Answer:2

Step-by-step explanation:

Multiply the-2 with the 5 and the -4x

Add the 10 to the -32

Equation is now -3x +22=8x

Add the 3x to the 8x which equals 11x

Now divide the 22 and 11.

X= 2

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The sum of two numbers is 33. Their difference is 23. Find the numbers.
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Answer: The numbers are 28 and 5

Step-by-step explanation: The question gives a set of clues. In the first instance, the addition of two numbers equals 33. Let us assume the two numbers are A and B. What that means is that

A + B = 33.

We shall call this equation 1.

The other clue is given as “their difference is 23.” This can be expressed as

A - B = 23.

We shall call this equation 2.

Now we have a pair of simultaneous equations as follows

A + B = 33 —————-(1)

A - B = 23 —————-(2)

We shall use the substitution method

From equation (1), if we make A the subject of the equation we shall move B to the other side and we’ll have

A = 33 - B

Substitute for the value of A in equation (2)

A - B = 23 now becomes

(33 - B) - B = 23

33 - B - B = 23

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By collecting like terms we now have 33 - 23 = 2B

(Remember that when a positive value crosses to the other side of an equation, it becomes negative, and vice versa)

33 - 23 = 2B

10 = 2B

Divide both sides of the equation by 2

5 = B

If we calculate B as 5

We can substitute for this value into equation 1, which is

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Subtract 5 from both sides of the equation

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Therefore the numbers are 28 and 5.

8 0
2 years ago
The formulae for kinetic energy is E =-mv2.<br><br> Find the value of E when m= 900 and v=1.3,
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Answer: ΔKE = 760.5 Joules

Step-by-step explanation:

Isnt the formula for ΔKE = 0.5m*v^2???

Im not going to use that formula you gave me, its wrong.

900/2 = 450

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450 x 1.69 = 760.5 Jules

This is also the wrong subject btw

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Answer:

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Step-by-step explanation:

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