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1 year ago

How do I solve this equation?

Mathematics

2 answers:

AnnyKZ [126]1 year ago

4 0

Okay so basically all you do is first subtract 2 from 2 and from 17. positive minus a negative 2 cancels out. Once this is done, you simplify your answer to 5x<15. Then, you divide both sides by 5 to get the variable by itself. 5x divided by 5 cancels out to 1 and 15 divided by 5 equals 3. This means that you answer will be x<3 and being that you did not multiply or divide by any negatives, the inequality sign stays the same and doesn’t flip... I hope this helps

aalyn [17]1 year ago

3 0

Answer:

x< 3

Step-by-step explanation:

5x+2<17

-2. -2

5x<15

Divide both sides by 5

x< 3

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kifflom [539]

Answer:

Step-by-step explanation:

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2 years ago

The comprehensive strength of concrete is normally distributed with μ = 2500 psi and σ = 50 psi. Find the probability that a ran

VARVARA [1.3K]

Answer:

The probability that the diameter falls in the interval from 2499 psi to 2510 psi is 0.00798.

Step-by-step explanation:

Let's define the random variable, $X =$ "Comprehensive strength of concrete". We have information that $X$ is normally distributed with a mean of 2500 psi and a standard deviation of 50 psi (or a variance of 2500 psi). In other words, $X \sim N(2500, 2500)$ .

We want to know the probability of the mean of X or $\bar{X}$ that falls in the interval $[2499;2510]$ . From inference theory we know that :

$\bar{X} \sim N(2500, \frac{2500}{5}) \Rightarrow \bar{X} \sim N(2500,500)$

Now we can find the probability as follows:

$P(2499 \leq \bar{X} \leq 2510) \Rightarrow P(\frac{2499 - 2500}{500} \leq \frac{\bar{X} - 2500}{500} \leq \frac{2499 - 2500}{500} ) \Rightarrow\\\Rightarrow P(-0.002 \leq \frac{\bar{X} - 2500}{500} \leq 0.02 ) \Rightarrow P(-0.002 \leq Z \leq 0.02 )$

Where $Z \sim N(0,1)$ , then:

$P(-0.002 \leq Z \leq 0.02 ) \approx P(0 \leq Z \leq 0.02 ) = P(Z \leq 0.02 ) - P(Z \leq 0) \\P(0 \leq Z \leq 0.02 ) = 0.50798 - 0.5 = 0.00798$

8 0

2 years ago

GEOMETRY HELP PLZ

tangare [24]

Answer:

0.324

0.068

Step-by-step explanation:

If Russell is 5'9" ; then he is under 6 feets :

Probability = number of forwards under 6 feets / tot number of players

Probability = 120 / 370 = 0.324

Peter is 6'2" ; Peter is over 6 feets ;

Probability that Peter is a guard = (number of guards over 6 feets / total number of players) = 25 / 370 = 0.0676 = 0.068

8 0

2 years ago

How do i add 567,890 567,096

marissa [1.9K]

567,890
+567,096
________
1,134,986

3 0

2 years ago

How many ounces are in 8 cups

Olenka [21]

First ask your self how many ounces are in 1 cup?
8 ounces
So to find how many ounces are in 8 cups, you have to multiply how many ounces in one cyp (8) by 8
8×8=64
64 ounces

3 0

2 years ago

Read 2 more answers