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3 years ago

Which algebraic expression matches the word phrase: 15 more that (c) cars.

Mathematics

2 answers:

kvasek [131]3 years ago

6 0

The answer: 5c
because: i’m smart

Burka [1]3 years ago

3 0

Might be 15c not sure not that smart

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Can y’all help me please

EastWind [94]

Answer:

0,95

Step-by-step explanation:

4 0

3 years ago

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Simplify (7 x 10 ^−13) − (4.2 x 10 ^−15).

vazorg [7]

The value of the expression (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵) will be 6.958 x 10⁻¹³. Then the correct option is C.

<h3>What is subtraction?</h3>

It simply implies subtracting something from an entity, group, location, etc. Subtracting from a collection or a list of ways is known as subtraction.

The expression is given below.

⇒ (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵)

Simplify the equation, then the value of the expression will be

⇒ (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵)

⇒ (7 x 10⁻¹³) − (0.042 x 10⁻¹³)

⇒ 6.958 x 10⁻¹³

The value of the expression (7 x 10⁻¹³) − (4.2 x 10⁻¹⁵) will be 6.958 x 10⁻¹³. Then the correct option is C.

More about the subtraction link is given below.

brainly.com/question/4319655

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7 0

2 years ago

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A major credit card company has determined that customers charge between $100 and $1100 per month. If the monthly amount charged

Alexxx [7]

Answer:

a) $E(X) = \frac{a+b}{2} = \frac{100+1100}{2}=600$

b) First we need to calculate the variance given by this formula:

$Var(X) = \frac{(b-a)^2}{12}= \frac{(1100-100)^2}{12} = 83333.33$

And the deviation would be:

$Sd(X) = \sqrt{83333.33}= 288.675$

c) $P(600 < X< 889) = P(X$

And using the cdf we got:

$P(600 < X< 889)= F(889) -F(600) = \frac{889-100}{1000} -\frac{600-100}{1000}= 0.789- 0.5= 0.289$

d) $P(311 < X< 889)= F(889) -F(311) = \frac{889-100}{1000} -\frac{311-100}{1000}= 0.789- 0.211= 0.578$

Step-by-step explanation:

For this case we define the random variable X who represent the customers charge, and the distribution for X on this case is:

$X \sim Unif (a= 100, b=1100)$

Part a

For this case the average is given by the expected value and we can use the following formula:

$E(X) = \frac{a+b}{2} = \frac{100+1100}{2}=600$

Part b

First we need to calculate the variance given by this formula:

$Var(X) = \frac{(b-a)^2}{12}= \frac{(1100-100)^2}{12} = 83333.33$

And the deviation would be:

$Sd(X) = \sqrt{83333.33}= 288.675$

Part c

For this case we want to find the percent between 600 and 889, so we can use the cumulative distribution function given by:

$F(x) = \frac{X -100}{1100-100}= \frac{x-100}{1000}, 100 \leq X \leq 1100$

And we can find this probability:

$P(600 < X< 889) = P(X$

And using the cdf we got:

$P(600 < X< 889)= F(889) -F(600) = \frac{889-100}{1000} -\frac{600-100}{1000}= 0.789- 0.5= 0.289$

Part d

$P(311 < X< 889) = P(X$

And using the cdf we got:

$P(311 < X< 889)= F(889) -F(311) = \frac{889-100}{1000} -\frac{311-100}{1000}= 0.789- 0.211= 0.578$

6 0

3 years ago

Which graph represents the function y = 2 x - 2?

seropon [69]

Answer:

the third one!

Step-by-step explanation:

5 0

3 years ago

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Beginning at sunrise the temperature rose 2.8° per hour how long did it take for the temperature to rise a total of 19.18°?

nadezda [96]

19.18/2.8= 6.85 hours or rounded it would be 7 hours

3 0

4 years ago

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