3 years ago

Is 8 a solution to 1/2 x + 9= 13 ?

Mathematics

1 answer:

ra1l [238]3 years ago

4 0

Answer:

yes the solution is 8

Step-by-step explanation:

subtract 9 from both sides

1/2x+9-9=13-9

simplify

1/2x=4

multiply both sides by 2

2 x 1/2=4 x 2

simplify

x=8

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PSYCHO15rus [73]

Answer:

Step-by-step explanation:

a =3 ;r = 1/2

first term = 3

second term = 3*1/2 = 3/2

third term = 3/2 * 1/2 = 3/4

Fourth term = 3/4*1/2 = 3/8

Fifth term = 3/8 * 1/2 = 3/16

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3 years ago

What is the solution set of {x | x 5}?

german

Answer:

3. the numbers between -5 and 5

Step-by-step explanation:

Let set A= $\{x| x>-5\}$ and set $B=\{x | x$ .

The solution set of A and B is the solution set of A∩B

The solution set of A is all the real number x which is greater than -5.

The solution set of B is all the real number x which is less than 5.

Therefore, the solution set of A∩B is all the real numbers between -5 and 5.

Hence, option (3) is correct.

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2 years ago

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mihalych1998 [28]

The pattern is adding 1.43 to the term before

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3 years ago

Use the following similar triangles (ABC ~ DEF). If AC= 18 when DF=19 and AB=15, what is DE? Solve mathematically. Round your an

aev [14]

Answer:

Step-by-step explanation:

As they are similar triangles,we can write

$\frac{AB}{DE}$ = $\frac{AC}{DF}$

⇒ $\frac{15}{DE}$ = $\frac{18}{19}$

⇒DE=15.8

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