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3 years ago

What is the pattern in this sequence? 0.001,0.01,0.1,1

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

8 0

Answer:

The one moves up a tenth until it gets to 1.

Step-by-step explanation:

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If 6 cans of soup cost $1.50, how much will 9 cans cost?

Step2247 [10]

If 6 cans of soup cost $1.50

9 cans cost .......................x?

x = 9 * 1.50 / 6

x = 2.25

Answer

9 cans cost $2.25

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3 years ago

If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.)

Sphinxa [80]

The answer is 14.4.................................

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3 years ago

Solve for a. 4a+5=2+3.5a

Mazyrski [523]

Answer:

a =-6

Step-by-step explanation:

4a+5=2+3.5a

Subtract 3.5a from each side

4a-3.5a+5=2+3.5a-3.5a

.5a +5 = 2

Subtract 5 from each side

.5a +5-5 = 2-5

.5a = -3

Divide each side by .5

.5a/.5 = -3/.5

a =-6

4 0

3 years ago

If f(x) = 7x-6, which of the following is the inverse of f(x)?

Harman [31]

Answer:

$f^{-1}$ (x) = $\frac{x+6}{7}$

Step-by-step explanation:

Let y = f(x) and rearrange making x the subject, that is

y = 7x - 6 ( add 6 to both sides )

y + 6 = 7x ( divide both sides by 7 )

x = $\frac{y+6}{7}$

Change y back into terms of x, hence

$f^{-1}$ (x) = $\frac{x+6}{7}$

8 0

3 years ago

How many liters of water must be added to 15 liters of 40 % sugar syrup to obtain 30 % sugar syrup?

RideAnS [48]

Answer:

5 L of water should be added

Step-by-step explanation:

Let x L is the amount of water needed to be added.

40% sugar syrup:

Amount of syrup = 15 L

Amount of sugar $=15\cdot 0.4=6$ L

30% sugar syrup:

Amount of syrup = 15 + x L

Amount of sugar $=(15+x)\cdot 0.3$ L

Amounts of sugar are the same (we didn't add sugar, only water), then

$0.3(15+x)=6\\ \\3(15+x)=60\\ \\45+3x=60\\ \\3x=60-45\\ \\3x=15\\ \\x=5\ L$

6 0

3 years ago