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3 years ago

What is the percent of change from 6 to 9

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

Answer is: 50%

pretty easy/simple solution, you could have just looked it up.

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Algebraic fractions<br> x² + 5x+4 /<br> x²+ 4x + 3

Tresset [83]

Answer:

$\frac{x+4}{x+3}$

Step-by-step explanation:

Given

$\frac{x^2+5x + 4}{x^2+4x+3}$ ← factor numerator and denominator

= $\frac{(x+1)(x+4)}{(x+1)(x+3)}$ ← cancel common factor (x + 1) on numerator/ denominator

= $\frac{x+4}{x+3}$

8 0

3 years ago

The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. F

OlgaM077 [116]

Answer:

The Sample size is 1918.89035

Step-by-step explanation:

Consider the provided information.

It is given that 14 out of 105 samples failed.

Therefore p = 14/105 = 0.13 3... and q=1-0.133=0.867

Samples would be needed to create a 99 percent confidence interval.

Subtract the confidence level from 1, then divide by two.

$\frac{(1 -0.99)}{2}=0.005$

By standard normal table z=2.5758≈2.58

Calculate the sample size as:

$n=\frac{z^2pq}{e^2}$

Where, e is the margin of error,

Substitute the respective values.

$n=\frac{(2.58)^2(0.133)(0.867)}{(0.02)^2}=1918.89$

Hence, the Sample size is 1918.89035

4 0

3 years ago

I really need help with this question! And I need to show work

krek1111 [17]

Answer:

x=0.25 or -1/4

Step-by-step explanation:

120x + 21 = -9

120x = -30 (-21 from both sides of equation)

x = -0.25 or -1/4 (divide 120 from both sides of equation)

3 0

3 years ago

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Andres bought a pair of shoes for $80 and 1 shirt for $20. The sales tax is 5%. How much did Andres pay for all the items includ

Savatey [412]

Answer: $21

HOPE THIS HELPS

CAN U PLEASE GIVE ME BRAINLIEST

6 0

3 years ago

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Ayesha bought a 24-pack of lip gloss for $18.96. What is the unit cost per tube of lip gloss?

bogdanovich [222]

Divide the total # of lip gloss Ayesha bought by the total cost.

24/$18.96
=$1.26582278 If the unit cost is rounded to the hundreths, it'll be $1.27.

4 0

3 years ago

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