3 years ago

Nine subtracted from twice a number

Mathematics

2 answers:

faust18 [17]3 years ago

6 0

That would be 2x - 9

lesya [120]3 years ago

5 0

Answer:

2x-9

Step-by-step explanation:

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A student uses a solution that contains 16 grams of water to conduct an evaporation experiment. At the end of one hour, the am

yanalaym [24]

Answer:

3.5% decrease means 96.5% remaining

0.965(16)

4.25% decrease means 95.75% remaining

0.9575(0.965(16))

= 14.7838 grams

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3 years ago

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11/square root of 17

alisha [4.7K]

45.3541618818 is the answer

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3 years ago

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The SAT Reasoning Test (formerly called the Scholastic Aptitude Test) is perhaps the most widely used standardized test for coll

slamgirl [31]

Answer:

The score is $x = 1884$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 1500$

The standard deviation is $\sigma = 300$

From the question we are told that the score follow a normal distribution

i.e $X \~ \ N( 1500 , 300)$

The proportion of score in the top 10% is mathematically

$P(X > x ) = P( \frac{X - \mu}{\sigma } > \frac{x - \mu}{\sigma } ) = 0.10$

Where x is the minimum score required to be in the top 10%

Now the $\frac{X - \mu}{\sigma } = Z (The \ Standardized \ value \ of \ X)$

$P(X > x ) = P( Z > \frac{x - \mu}{\sigma } ) = 0.10$

$P(X > x ) = P( Z > \frac{x - 1500}{300} ) = 0.10$

So the critical value of 0.10 from the normal distribution table is $Z_{0.10} = 1.28$

$\frac{x - 1500}{300} = 1.28$

$x = 1884$

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3 years ago

What is the product in simplest form? State any restrictions on the variable.

Masteriza [31]

I factor it because you can't simplify

2x-8=2(x-4)
X^2+5x+4=(x+1)(x+4)
X^2-16=(x-4)(x+4)
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3 years ago

How to solve 10+(-3 3/8)

katrin2010 [14]

10+(-3 3/8)

= 10+(-27/8)

=80/8-27/8

=53/8

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2 years ago

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