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3 years ago

The PS4 cost $650 when it first came out. Two years later it was only worth $250. By what percentage did the price decrease?

Mathematics

1 answer:

Alex777 [14]3 years ago

8 0

Answer:

It decreased by 61.5%

Step-by-step explanation:

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3x + 4 = 13 solve for X

igor_vitrenko [27]

Answer:

x = 3

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x. Do the opposite of PEMDAS.

First, subtract 4 from both sides:

3x + 4 (-4) = 13 (-4)

3x = 13 - 4

3x = 9

Next, divide 3 from both sides:

(3x)/3 = (9)/3

x = 9/3

x = 3

3 is your answer for x.

5 0

4 years ago

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How do you divide 328 by 2

UkoKoshka [18]

Answer:

164

Step-by-step explanation:

You can use a calculator or use long division

4 0

3 years ago

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S+1/4s=-6-3/2<br> provide your answer

Ilya [14]

Answer:

s = -6

Step-by-step explanation:

Combining terms, we get ...

(5/4)s = -15/2

Multiplying by 4/5 gives ...

s = (4/5)(-15/2)

s = -6

8 0

4 years ago

Resiprocal of (-3/7)^2!

USPshnik [31]

Answer:

$\frac{49}{9}$

Step-by-step explanation:

Given

$(\frac{-3}{7})^{2!}$

Required

Determine the reciprocal

If a number is x, the reciprocal is: 1/x

So, the reciprocal of $(\frac{-3}{7})^{2!}$ is:

$\frac{1}{(\frac{-3}{7})^{2!}}$

$2! = 2*1 =2$

So, we have:

$\frac{1}{(\frac{-3}{7})^{2}}$

$\frac{1}{(\frac{-3^{2}}{7^{2}})}$

Evaluate all exponents

$\frac{1}{(\frac{9}{49})}$

Take inverse of 9/49

$\frac{49}{9}$

Hence, the reciprocal of $(\frac{-3}{7})^{2!}$ is $\frac{49}{9}$

5 0

3 years ago

Estimate how many times larger 4 x 10^15 is than 8 x 10^9 in the form of a single digit times an integer power of 10.

netineya [11]

Answer:

5×10⁵

5×10⁶

Step-by-step explanation:

$\dfrac{4\cdot 10^{15}}{8\cdot 10^{9}}=\dfrac{40\cdot 10^{14}}{8\cdot 10^{9}}\\\\=\dfrac{40}{8}\cdot 10^{(14-9)}=5\cdot 10^{5}$

$\dfrac{2\cdot 10^{-5}}{4\cdot 10^{-12}}=\dfrac{20\cdot 10^{-6}}{4\cdot 10^{-12}}\\\\=\dfrac{20}{4}\cdot 10^{(-6-(-12))}=5\cdot 10^{6}$

3 0

4 years ago