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nikitadnepr [17]
3 years ago
12

X+21+3x+9 solve for x​

Mathematics
1 answer:
frez [133]3 years ago
7 0

Answer:

This is not an equation. It is an expression, you can't solve for x in an expression

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Please help with 11c!?
Contact [7]

Answer:

"To the nearest year, it would be about 9 years"

Step-by-step explanation:

11c)

This is compound growth problem. It goes by the formula:

F=P(1+r)^t

Where

F is the future amount

P is the present (initial) amount

r is the rate of growth, in decimal

t is the time in years

Given,

P = 20,000

r = 8% = 8/100 = 0.08

F = double of initial amount = 2 * 20,000 = 40,000

We need to find t:

F=P(1+r)^t\\40,000=20,000(1+0.08)^t\\2=(1.08)^t

To solve exponentials, we can take Natural Log (Ln) of both sides:

2=(1.08)^t\\Ln(2)=Ln((1.08)^t)

Using the rule shown below we can simplify and solve:

Ln(a^b)=bLn(a)

We can write:

Ln(2)=Ln((1.08)^t)\\Ln(2)=tLn(1.08)\\t=\frac{Ln(2)}{Ln(1.08)}\\t=9.0064

To the nearest year, that would be about 9 years

5 0
3 years ago
A carnival charges $8 to enter and $3 per ride. Fill in the table of values for the total cost for a person to enter and go on 0
grigory [225]

Answer:

Look at the picture

Step-by-step explanation:

For 0 rise it would just be eight dollars

4 0
2 years ago
Can someone help me with question 8??? I know how to solve it but I’m just making sure my math is right before I write it down
Nostrana [21]
Ion sorry I don’t know I’m tryna ask a question
7 0
3 years ago
Read 2 more answers
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3 years ago
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Answer:

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ii between 25-29 = 0/10

iii at least 30 mpg = 1/10

c- 38, 28,25,26,24,25

d- the mileage of six cylinder car is less than the mileage of four cylinder cars using the same amount of fuel. it is somehow accurate, other factor that affects is the model of the car and how big it is.

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