1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pentagon [3]
3 years ago
15

Two show your work questions

Mathematics
1 answer:
Svet_ta [14]3 years ago
5 0

Answer:

x = 1; y = 1; z = 0

Step-by-step explanation:

First problem:

First equation minus second equation: 3y + 2z = 3      Eq. A

Second equation plus third equation: 2y + 4z = 2        Eq. B

-2 times Eq. A plus Eq. B: -4y = -4

y = 1

Substitute y = 1 in Eq. A: 3 + 2z = 3

2z = 0

z = 0

Substitute z = 0 and y = 1 in original first equation:

-2x + 2 + 0 = 0

-2x = -2

x = 1

Answer: x = 1; y = 1; z = 0



You might be interested in
The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.18 millimeters and a standard deviat
dimulka [17.4K]

As per the concept of normal distribution, the two diameters of the bolt that has separate the top 3% and the bottom 3% are 5.2836 mm and 5.0764 mm respectively .

Normal distribution:

Normal distribution means the probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean and it has the bell shaped curve.

Given,

The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.18 millimeters and a standard deviation of 0.07 millimeters.

Here we need to find the two diameters that separate the top 3% and the bottom 3% and these diameters could serve as limits used to identify which bolts should be rejected. we have also round off the result into nearest hundredth.

Here we have the given question with the values of,

The value of Mean is 5.18 millimeters

The value of Standard deviation is 0.07 millimeters.

Here we have to consider the following two cases, they are.

Case 1

We need to find x₁ such that that is P(X > x₁) = 3% when we convert it into decimal then we get P (X > x₁) = 0.03

So, as per the probability,

P (X ≤ x₁) = 1 - 0.03 = 0.97

So, z corresponding to the value of p = 0.97 is 1.48

Apply the given values to the formula of normal distribution then we get,

=> 1.48 = (x₁ -  5.18) /0.07

=> 0.1036 = x₁ - 5.18

Therefore, the value of x₁ is  5.2836

So, the diameter of the both with separate top 3% is 5.2836.

Case 2:

Next we have to take P(X < x₂) = 3% when we convert it into decimal then we get P (X < x₂) = 0.03

So, as per the given probability, the value of

P (X ≤ x₂) = 1 - 0.03 = 0.97

So, z corresponding to but here we have to use the negative because of the less than concept p = 0.97 is -1.48

Apply the values on the formula of normal distribution then we get,

-1.48 = (x₂ -  5.18) /0.07

Move the value to the other side

-0.1036 = x₂ - 5.18

When we simplify it,

x₂ =  5.0764

So, the diameter of the both with separate bottom 3% is 5.0764

To know more about Normal distribution here.

brainly.com/question/12421652

#SPJ1

7 0
9 months ago
The ratio of 6 hours and 48 minutes in simplest form is (I need this quickly)
julsineya [31]
The gcf of both 6 and 48 is 6. So, in simplest form, the ration would be: 1:6 or 1 hour:6 minutes :)
7 0
2 years ago
What is the correct solution of<br> 4 - 2x = -2<br> +4 +4<br> 2x = 2<br> 2 2<br> x = 6
zepelin [54]
The answer is x=3
Lol
4 0
3 years ago
Help please show work
Aleonysh [2.5K]

Answer:

C. 56.25π

Step-by-step explanation:

Circumference=15π=πd⇒d=15

Area=πr^2⇒r=d/2⇒r=7.5⇒π7.5^2=56.25π

7 0
2 years ago
What is the solution of the system of equations? y=-4x+10 y=-2x-6
Elina [12.6K]

Question-


What is the solution of the system of equations? y=-4x+10 y=-2x-6


Answer-


y = -4x + 10

y = -2x - 6


-4x + 10 = -2x - 6

-4x + 2x = -6 - 10

-2x = -16

x = -16/-2

x = 8


y = -4x + 10

y = -4(8) + 10

y = -32 + 10

y = -22


solution is (8,-22)


Hope i helped have a wonderful day

Can i get a Brainliest please and thank you...

4 0
3 years ago
Read 2 more answers
Other questions:
  • In a sample of 7500 new iphones, 18 were found to be defective. at this rate, how many defective iphones would be expected in a
    11·1 answer
  • Can somebody help me out i’m struggling really badly
    15·1 answer
  • Based on her recipe, Elena knows that 5 servings of granola have 1,750 calories. 1. if she eats 2 servings of granola, how many
    12·2 answers
  • You are preparing coffee for the breakfast. For every tablespoon of coffee you use 120ml of water. How many tablespoons of coffe
    14·2 answers
  • Tom is 8 years older than jane. five yeara ago tom was three times as old as jane. how old is jane now?
    14·1 answer
  • Find all rational zeros of the function<br><br> h(x)=6x^3-41x^2-8x+7
    12·2 answers
  • Two addends
    8·1 answer
  • Hey can anyone pls help me out in dis I will give up 30 points and also will mark u as brainliest!!!!!!!!!!
    12·1 answer
  • A shopper buys notebooks for $15, what is the total cost if the tax is 8%
    15·1 answer
  • How many times would you expect to land on heads if you flipped a standard coin 250 times?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!