PLEASE HELP ME Mathmath

Answer:

9333/10000

Step-by-step explanation:

To write .9333 as a fraction you have to write .9333 as the numerator and put 1 as the denominator. Then you multiply the numerator and the denominator by 10.

Answer:-3 over 7

Step-by-step explanation:

rise over run

Answer:

Image below

Step-by-step explanation:

Hey there!

Well lets graph the given inequality,

y < 3x + 1

Look at the image below.

So the right graph should look like the image below.

Hope this helps :)

Answer:

94

Step-by-step explanation:

sum of all angles in a triangle=180

total angle=3

sum of two angles=86

3rd angle=180-86=94

Answer:

-8

Step-by-step explanation:

Both the numbers are negative so you add them together and keep the negative sign

Answer:

-8

Step-by-step explanation:

when negative and positive meet, the negative dominates the positive thereby making it negative.

-5 + (-3)

-5 - 3

-8

Answer:

Step-by-step explanation:

Hello, please consider the following.

First of all, we need to complete the squares, then move the constant to the right side, as below.

[tex]x^2+y^2+4x-10y-7=0\\\\(x+2)^2-4+(y-5)^2-25-7=0\\\\(x+2)^2+(y-5)^2=36=6^2[/tex]

And then, we can read the answers from the rearranged equation.

(a) The centre is then (-2,5)

(b) The radius is 6

Thank you.

Answer: 1.   1,906,500

 2.   840

Step-by-step explanation:

1. Given: There are 125 juniors at the high school.

Total positions = 3    [president,vice president, and secretary]

Then, Number of ways to elect a  president,vice president, and secretary( which is in order) out of  125 juniors = [tex]^{125}P_{3}=\dfrac{125!}{(125-3)!}[/tex]  [Using permutations]

[tex]=\dfrac{125!}{122!}\\\\=\dfrac{125\times124\times123\times122!!}{122!}\\\\=125\times124\times123\\\\=1906500[/tex]

Hence, Required ways =1906500

(2) Given word : "RHOMBUS"

Total letters= 7

By permutation, the umber of 4-letter arrangements = [tex]^7P_4=\dfrac{7!}{(7-4)!}=\dfrac{7!}{3!}[/tex]

[tex]=\dfrac{7\times6\times5\times4\times3!}{3!}\\\\= 7\times6\times5\times4\\\\=840[/tex]

Hence, required ways = 840

Answer:

1) The number of ways = 1906500.

2) The number of ways = 840.

1) President, vice president, and secretary are 3 different positions.

There are total 125 students.

So we can select them in [tex]125P3=\frac{125!}{\left(125-3\right)!}=1906500[/tex] ways.

2) There are total 7 different letters in RHOMBUS.

We can select 4 different letters from 7 letters in [tex]7P4=\frac{7!}{\left(7-4\right)!}=840[/tex].

Learn more: https://brainly.com/question/13769924

Answer:

Step-by-step explanation:

Given that:

[tex]x^2 + z^2 \leq 36[/tex]

if we assume that x is zero, then [tex]z^2 = 36[/tex] , [tex]z = \pm \sqrt{36}[/tex] [tex]z = \pm 6[/tex] i.e the radius of the circle goes from -6 to +6, Similarly, if we assume that z is zero, then [tex]x^2 = \pm 36[/tex] , [tex]x = \pm \sqrt{36}[/tex] , [tex]x = \pm 6[/tex] . This implies that [tex]x^2 + z^2[/tex] describes the circle with radius 6

[tex]x^2 + z^2 \leq 36[/tex] is an equation at region which consist of those points whose distance  from the centre is at least with radius -6 and at most 6.

Therefore, the region is the solid cylinder of radius 6, where the Y axis is also the axis of the cylinder.

Answer:

125 cm

Step-by-step explanation:

Ratio of pieces of the rod:

In total, the rod is equal to:

Since the shortest peace:

Length of the rod:

Answer:

Option (A)

Step-by-step explanation:

AE and RV are the two line segments intersecting at a point N.

Therefore, ∠ANR ≅ ∠ENV [Vertical angles are equal in measure]

(8x + 12)° = (5x + 57)°

8x - 5x = 57 - 12

3x = 45

x = 15

Since, m∠ENV = 5(15) + 57

                        = 75 + 57

                        = 132°

Therefore, Option (A) will be the answer.

Answer:

probability of lasting longer = 1.7%

Step-by-step explanation:

We are given:

x' = 14 years

μ = 12.3 years

s = 0.8 years

Thus, let's use the formula for the Z-score value which is;

z = (x' - μ)/s

Thus;

z = (14 - 12.3)/0.8

z = 2.125

From the z-distribution table attached, the p-value is ;

P(x' > 2.125) = 1 - 0.983 = 0.017 = 1.7%

Thus,probability of lasting longer = 1.7%

Answer:

1. Estimate the product.

2. Multiply to find the product. Multiply the decimals as if they were whole numbers. Ignore the decimal point.

3. Compare your estimate with your product to verify that your answer makes sense.

Answer:

95/4

Step-by-step explanation:

Given,

a/b =2/3

Therefore, 2a²+3b²/a²+b² = ?

We get,

a/b = 2/3

So, we can write

a = 2 and b = 3

Now,

2×(2)² + 3×(3)²/(2)² + (3)² [Putting the values of a and b]

= 2×4 + 3×9/4 + 9

= 8 +27/4 + 9

= (32+27+36)/4 [ Taking L.C.M, we get 4]

= 95/4

Answer:  195.5 or 12 7/32

Step-by-step explanation:

There is no letter tetha in the table so I use α instead. However it is not sence to final result.

The expression is:

(sinα+cosα)/(cosα*(1-cosα))

Lets divide the nominator and denominator by cosα

(sinα/cosα+cosα/cosα)/(cosα*(1-cosα)/cosα)= (tanα+1)/(1-cosα)=

=(8/15+1)/(1-cosα)= 23/(15*(1-cosα))    (1)

As known cos²α=1-sin²α   (divide by cos²α both sides of equation)

cos²a/cos²α=1/cos²α-sin²α/cos²α

1=1/cos²α-tg²α

1/cos²α=1+tg²α

cos²α=1/(1+tg²α)

cosα=sqrt(1/(1+tg²α))= +-sqrt(1/(1+64/225))=+-sqrt(225/(225+64))=

=+-sqrt(225/289)=+-15/17   (2)

Substitute in (1) cosα  by (2):

1st use cosα=15/17

1) 23/(15*(1-cosα)) =23/(15*(1-15/17))= 23*17/2=195.5

2-nd use cosα=-15/17

2)23/(15*(1-cosα)) =23/(15*(1+15/17))= 23*17/32=12 7/32

Step-by-step explanation:

P(green AND 4)

= P(green) × P(4)

= (4/8) × (1/5)

= 1/10

Using probabilities of independent events, it is found that there is a 0.1 = 10% probability that she draws a green ball and a tile numbered with 4.

-------------------

-------------------

The probability of both events is given by:

[tex]P(A \cap B) = P(A) \times P(B) = 0.5(0.2) = 0.1[/tex]

0.1 = 10% probability that she draws a green ball and a tile numbered with 4.

A similar problem is given at https://brainly.com/question/24174994

The ratio of blue paints to yellow paint is a mixture of 2 : 3.

Suppose that we've got two quantities with measurements as 'a' and 'b'

Then, their ratio(ratio of a to b) a:b

or

[tex]\dfrac{a}{b}[/tex]

The Total cans of blue paint = 14

Total cans of yellow paint = 20

Day 1:

Yellow paint = 6 cans

Blue paint = 4 cans

The ratio of blue paints to yellow paint

= 2 : 3

Day 2:

Yellow paint = 9 cans

Blue paint = 6 cans

The ratio of blue paints to yellow paint

2 : 3

Day 3:

Cans of yellow remaining after 2 days

Yellow paint = Total cans of yellow paint - day 1 cans of yellow paint - day 2 cans of yellow paint

= 20 - 6 - 9

= 20 - 15

= 5 cans

Cans of blue remaining after 2 days

Blue paint = Total cans of blue paint - day 1 cans of blue paint - day 2 cans of blue paint

= 14 - 4 - 6

= 14 - 10

= 4 cans

Learn more about ratios here:

brainly.com/question/186659

#SPJ1

Answer:

41

Step-by-step explanation:

step 1. first, you should plug in all the x's.  x² is 49, 2x is 14. The

equation would then be 49-14+6 which is 41

2x would be 2 x 7 because when 2 numbers are touching, they are to be multiplied.

x² would be 7 x 7 because, when you have a number to the power of 2, you multiply it by itself.

and finally you would get, 49-14+6 and according to PEMDAS, the eqaution hsould go left to right leaving us with the answer of 41.

i hope you understand this. :)

Answer:

41

Step-by-step explanation:

x²-2x+6

Let x = 7

7^2 -2*7 +6

49 -14 +6

41

Answer:

the answer is -4 I think

Answer:

−4

Step-by-step explanation:

(26 ÷ 13) ⋅ (−7) + 14 − 4 =

= 2 ⋅ (−7) + 14 − 4

= −14 + 14 − 4

= 0 − 4

= −4

Answer:

  $9918.30

Step-by-step explanation:

The total tax is ...

  6.2% × $128,400 + 1.45% × $135,000 = $7960.80 +1957.50

  = $9,918.30

Answer:

for more appropriate it would be 0-2.5, and the max is 15

Step-by-step explanation:

The domain of a graph is the possible x-values of the graph, while the range is the possible y-values.

From the attached graph (see attachment), we have the following observations.

Because the volume of a box cannot be negative, the x-values to use must correspond to non-negative y-values.

Hence, the proper domain of Noah's graph should be 0 to 2.5

And the maximum of the graph is at y = 15

Read more about domain and graphs at:

https://brainly.com/question/1982148

Answer:

32

Step-by-step explanation:

53 - 11 is 21, so they each gave 21, but vace gave 11 more so you add 11 to get 32

Answer:

Kayla's reasoning is not correct.

Step-by-step explanation:

The locker problem is as follows:

Imagine you are at a school that has student lockers. There are 200 lockers, all shut and unlocked, and 200 students. Suppose the first student goes along the row and opens every locker. The second student then goes along and shuts every other locker beginning with number 2. The third student changes the state of every third locker beginning with number 3. (If the locker is open the student shuts it, and if the locker is closed the student opens it). The fourth student changes the state of every fourth locker beginning with number 4. Imagine that this continues until the 200 students have followed the pattern with the 200 lockers. At the end, which lockers will be open and which will be closed? Why?

Solution:

So from the information we know that the first student goes along the row and opens every locker.

Then the second student shuts every other locker, i.e. locker numbers 2, 4, 6, 8, 10, ..., 196, 198 and 200.

Then the third students changes the state of every third locker, i.e. he/she closes an open locker and opens a closed locker.

So the open lockers are: 1, 5, 6, 12,...

Then the fourth students changes the state of every fourth locker.

So the open lockers are: 1, 4, 5, 6, 8,....

So, on we will observe that the open lockers have a perfect square number such as, 1, 4, 9, 16,....

Consider that the pattern is as follows:

Student 1 opens the locker, Student 2 closes it, Student 3 opens it, person 4 Student and so on.

This is because the square numbers always have an odd number of factors, which leads them to be open at the end.

Take any locker number, 40, for example. Its state (open or closed) is changed for every student whose number in line is a factor of the locker number.

Student      Locker 40 status

     1                    Open

     2                   Close

     4                   Open

     5                   Close

     8                   Open

     10                  Close

    20                  Open

    40                  Close

Like all other lockers numbered with non-square numbers, it ends up closed after all the students have gone through the line because it has an even number of factors.

Consider the locker number 16:

Student      Locker 16 status

     1                    Open

     2                   Close

     4                   Open

     8                   Close

     16                  Open

Thus, we can conclude that all the doors with square numbers on them will remain open because all square numbers have an odd number of factors and the doors with non-square numbers on them will remain close because they have even number of factors.

There will be a total of 14 lockers open.

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169 and 196

So, if there are 10 lockers open in the first 100 lockers there must be only 4 other lockers opened in the next 100.

Answer:

0.0228

Step-by-step explanation:

Given that:

mean (μ) = 75, Standard deviation (σ) = 3.5

The z score is a score used in statistics to measure by how many standard deviations the raw score is above or below the mean. If the z score is positive, it means that the raw sore is above the mean and if the z score is negative then the raw score is below the mean. The z score is given by:

[tex]z=\frac{x-\mu}{\sigma}\\ \\For\ a\ sample \ n, the\ z\ score\ is:\\ \\z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex]

For x > 76 and a sample (n) = 49:

[tex]z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n} } }\\\\z=\frac{76-75}{\frac{3.5}{\sqrt{49} } }=2[/tex]

From the normal distribution table, the probability that the average score of the 49 players exceeded 76 = P(x > 76) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228

Answer: z = 7 or z=-5

Step-by-step explanation:

First you need to factor the polynomial.

To factor [tex]z^{2}[/tex]  - 2z -35       You will need to find two numbers that their product is -35 and their sum is -2  and the numbers -7 and 5  works out.

Rewrite the polynomial as,

[tex]z^{2}[/tex] - 7z + 5z - 35  = 0   factor the left by grouping

([tex]z^{2}[/tex] -7z) (5z -35)  = 0

z(z -7)  5(z - 7) = 0      Factor out z-7

(z-7)(z+5) = 0        Now apply the zero product by setting each of them equal 0.

z-7= 0      or  z+5=0

 +7  +7             -5  -5

z = 7     or  z= -5  

Answer:

2.793109

Step-by-step explanation:

Answer: Jack has 33 and Dylan has 13

Explanation: 33 + 13 = 46 and 13 + 20 =  33

Answer:

The coordinate of point Q' is (3 , 4).

Answer:

5+2x

Step-by-step explanation:

Answer:

Let X= Additional Amount

Equation= 5+2x=17

                     -5       -5

                   __________

                     2x=12

                    _______

                     2     2

                      X=6 is the answer, Hope that helped ya.

Step-by-step explanation:

I hope this helps you

let's find AB

AB=square root of 2^2+3^2

AB=square root of 13

cosO=2/sqrt13

sinO=3/sqrt13

tgO=3/2

ctgO=2/3