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3 years ago

11

Solve this equation for x. Round your answer to the nearest hundredth. 3 = In(x + 9)

1 answer:

Mrac [35]3 years ago

7 0

Answer:

x ≈ 11.09

Step-by-step explanation:

Using the rule of logarithms

$log_{b}$ x = n ⇒ x = $b^{n}$

Given

ln(x + 9) = 3 , that is

$log_{e}$ (x + 9) = 3 , then

x + 9 = e³ ( subtract 9 from both sides )

x = e³ - 9 ≈ 11.09 ( to the nearest hundredth )

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Betty's Bakery sells donut holes at $2.00 for 5 boxes. Shari's Sweets sells 6 boxes of donut holes for $2.30. Which store has th

liq [111]

Easy. You're finding unit rates for both Betty's and Shari's.

Betty's: Divide 2.00 and 5 to get 0.4 or $0.40

Shari's: Divide 2.30 and 6 to get .38 (Had to round) or $0.38

Conclusion: Shari's is the better buy, you'll be saving 2 cents!

Hope this helped!

8 0

3 years ago

Read 2 more answers

A regular computer screen has a area of A square inches. The width of the computer screen is 7 inches. Which equation represents

mario62 [17]

Answer:

7 square inches hope this helps brainlest plzzz

Step-by-step explanation:

8 0

3 years ago

2-31. Write an equation and solve it to find the answer to the question below. Use the 5-D Process to help you write the equati

raketka [301]

r = 25+b

n = 3b

n+r+b=435

3b+25+b+b=435

5b+25=435

5b=210

b=42

r = 25+42 = 67

n = 3(42) = 126

6 0

4 years ago

What is the completely factored form of the expression 16X2 +18X+32

lina2011 [118]

ANSWER

$2(8 {x}^{2} + 9x + 16)$

EXPLANATION

The given expression is

$16 {x}^{2} + 18x + 32$

The greatest common factor is 2.

We factor 2 to obtain:

$2(8 {x}^{2} + 9x + 16)$

The expression in the parenthesis is prime.

This means that the quadratic expression in the parenthesis cannot be factored.

Hence the completely factored form is:

$2(8 {x}^{2} + 9x + 16)$

7 0

4 years ago

Read 2 more answers

If 95% and 98% confidence intervals were calculated from the same sample data in order to estimate the true cost of an appliance

damaskus [11]

Answer:

D) The z-statistics would be different.

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the sample mean
ME is the margin of error from the mean

An margin of error (ME) from the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding z-statistic in the given confidence level

s is the population standard deviation

N is the sample size

If 95% and 98% confidence intervals were calculated from the same sample data, then M, s and N are same.

$\frac{s}{\sqrt{N} }$ is called standard error. Since s and N are same the standard errors would also be same.

But, two tailed z-statistic for 95% confidence level is ≈1.96 where for 98% it is ≈2.33

8 0

3 years ago