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3 years ago

Twelve decreased by two times a number is 8. Find the number.

Mathematics

2 answers:

Law Incorporation [45]3 years ago

7 0

Answer:

x = 2

Step-by-step explanation:

We can make an equation that meets the requirements stated.

Decreased signifies subtraction, so 12 will reduce the value after it. A number can be any letter you'd like, but I'll stick to x. Since 2 is multiplying <em>that</em> number, we can make 2 the coefficient. Finally, set it equal to 8.

12 - 2x = 8 Subtract 12 from both sides of the equation.

-2x = -4 Divide by -2 on both sides of the equation.

x = 2

lora16 [44]3 years ago

4 0

Answer:2

Step-by-step explanation: 12-8=4 4/2=2

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It's a question from real and complex numbers which I can't solve. so someone PLZ HeLp

Semmy [17]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

Using the rules of exponents

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Simplifying the product of the first 2 terms

$\frac{a^{p^2+pq} }{a^{pq+q^2} }$ × $\frac{a^{q^2+qr} }{a^{qr+r^2} }$

= $a^{p^2-q^2}$ × $a^{q^2-r^2}$

= $a^{p^2-r^2}$

Simplifying the third term

5( $(a^p+r)^{p-r}$

= 5 $a^{(p+r)(p-r)}$ = 5 $a^{(p^2-r^2)}$

Performing the division, that is

$\frac{a^{(p^2-r^2)} }{5a^{(p^2-r^2)} }$ ← cancel $a^{(p^2-r^2)}$ on numerator/ denominator leaves

= $\frac{1}{5}$

4 0

3 years ago

A 56-inch Woman cast a shadow that is 16 inches long. How tall is her child if his shadow is 14 inches long?

nikitadnepr [17]

Answer:49

Step by step is 56÷16=3.5

14x3.5=49

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3 years ago

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NeX [460]

Answer:

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2 years ago

Which of the following is not a real number?

Aleks [24]

Answer:

D: √(-4)

Step-by-step explanation:

D: √(-4) is not a real number; it's an imaginary one.

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago