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3 years ago

I need to know what x is and the steps thanks

Mathematics

1 answer:

musickatia [10]3 years ago

8 0

Okay, you want to get x all by itself. You want to have the rest of the equation on one side.

Add two to the other side.

bx-2= k

bx= k+2

Now divide x from both sides.

b= k+2 (both divided by) / x

I hope this helps!

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If caffeine reduces by about 10% per hour, how many hours h does it take for the amount of caffeine in a body to

Mila [183]

Answer:

7 hours

Step-by-step explanation:

Since, the final amount of caffeine formula would be,

$A=P(1-r)^t$

Where,

P = Initial value,

r = rate per period,

t = number of periods,

Here, r = 10% = 0.10, t = h, A = $\frac{P}{2}$

$\frac{P}{2}=P(1-0.10)^h$

$\frac{1}{2}=(0.90)^h$

Taking log both sides,

$log 0.5 = log 0.90^h$

$log 0.5 = h log 0.90$

$\implies h = \frac{log 0.5}{log 0.9}=6.57881347896\approx 7$

Hence, after 7 hours the amount of caffeine in a body to reduce by half.

3 0

3 years ago

Pamela's age is two times Jiri's age. The sum of their ages is 84. What is Jiri's age?

Grace [21]

Answer:

Step-by-step explanation:

28 times 2 = 56

28 times 1 = 28

56 + 28 = 84

4 0

3 years ago

Alex can cut a cord into 7 pieces in 36 seconds. How long will it take him to cut the cord into 12 pieces? (the answer is NOT 61

Anika [276]

Answer:

x=61.71428 or 61 5/7

Step-by-step explanation:

We can use a ratio to solve

7 pieces 12 pieces

----------------- = ---------------

36 seconds x seconds

Using cross products

7x = 36*12

7x = 432

Divide by 7

7x/7 = 432/7

61 5/7

x=61.71428

3 0

3 years ago

Read 2 more answers

Evan is making soft pretzel nuggets. His recipe says that, after he makes the dough, he should divide it into 8 equal pieces. Th

Varvara68 [4.7K]

Answer:

The answer to your question is 192 pretzels

Step-by-step explanation:

Data

number of pieces = 8

length of each piece = 2 ft

length of each pretzel = 1 in

number of pretzels = x

Process

1.- Convert ft to in

1 ft --------------- 12 in

2 ft --------------- x

x = (2 x 12) / 1

x = 24 ft

2.- Divide the length of each piece by the length of each pretzel

24/1 = 24 pretzels per piece

3.- Multiply the number of pretzels per the number of pieces

24 x 8 = 192 pretzels

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3 years ago

Is each statement true for ⊙P? Drag “true” or “false” below each statement

Bess [88]

True and false I think

5 0

3 years ago