plz give me correct answers ​

Answer:

{1,5}

Step-by-step explanation:

The intersection of the sets are all of the numbers that appear in both sets. In this case, the only numbers that appear in both are 1 and 5.

Answer:

{ 1,5}

Step-by-step explanation:

The intersection is what the two sets have in common

{1, 5, 10, 15}∩ {1, 3, 5, 7}

= { 1,5}

Answer:

[tex]f^{-1}(x)= - \frac{1}{8} x+\frac{1}{4}[/tex]

Step-by-step explanation:

[tex]f(x) = -8x + 2[/tex]

[tex]y = -8x + 2[/tex]

[tex]y-2=-8x[/tex]

[tex]- \frac{1}{8} y+\frac{1}{4} =x[/tex]

[tex]- \frac{1}{8} x+\frac{1}{4} =y[/tex]

[tex]f^{-1}(x)= - \frac{1}{8} x+\frac{1}{4}[/tex]

Answer:  16y² - x²

Step-by-step explanation:  The - sign means a difference, so the choices with + signs are eliminated (though 64x² and 9 are squares)

10 is not a square so that one is eliminated (though the y² and the 4x² are squares)

16 is the square of 4, y² is the square of y, and x² is the square. That expression shows a difference of squares.

Answer:

its 3:4

Hope this helps! :)

The ratio is 3:4  and the number of circle need is 3.

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Here, from the given picture, we get that,

No. of circles = 9

No. of triangles = 12

So, required ratio = 9:12

                             =3:4

Now, Let, x circles are needed to make ratio 1:1

i.e. 9+x:12=1:1

9+x=12

x=3

Hence, The ratio is 3:4  and the number of circle need is 3.

To learn more on ratio click:

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Hey there! :)

Answer:

(g-f)(10) = 279/10.

Step-by-step explanation:

Given:

[tex]f(x) = x^{-1}[/tex]

and

[tex]g(x) = 2x + 8[/tex]

Begin by solving for (g-f) by subtracting f(x) from g(x):

[tex](g-f)(x) = 2x + 8 - x^{-1}[/tex]

Substitute in 10 for x in the equation to solve this problem:

[tex](g-f)(10) = 2(10) + 8 - 10^{-1}[/tex]

Simplify:

[tex](g-f)(10) = 20 + 8 - \frac{1}{10}[/tex]

Create a common denominator to simplify further:

[tex](g-f)(10) = \frac{200}{10}+ \frac{80}{10} - \frac{1}{10}[/tex]

[tex](g-f)(10) = \frac{279}{10}[/tex]

Therefore:

(g-f)(10) = 279/10.

Answer:

  (-2/3, 2), (1/2, 2)

Step-by-step explanation:

A graphing calculator can show you those points: (-2/3, 2), (1/2, 2).

__

Put the given value in the equation and solve for x.

  2 = f(x)

  2 = (x -2)/(3x^2 +x -2)

  2(3x^2 +x -2) -(x -2) = 0 . . . . . multiply by the denominator; put in standard form

  6x^2 +x -2 = 0 . . . . . collect terms

  (3x +2)(2x -1) = 0 . . .  factor

Solutions are values of x that make the factors zero:

  x = -2/3, x = 1/2

Then the points on the graph are (-2/3, 2) and (1/2, 2).

Answer:

4d + 6

Step-by-step explanation:

Helen ate d donuts.

Andrea ate 6 more than 4 times d.

4d + 6

The pizza is cut into 6 slices so each slice would be 1/6 of the pizza.

He at 1/2 of a slice:

1/6 x 1/2 = 1/12 of the pizza

Answer:

B. False

Step-by-step explanation:

the sum will be within [0,2].

Take for example the independent random values 0.8 and 0.7.

They add up to 1.5, which is outside [0,1]. That's why the statement cannot be true.

Answer:

3lbs

Step-by-step explanation:

Answer:

[tex]9.9-2.14\frac{0.30}{\sqrt{15}}=9.734[/tex]    

[tex]9.9+2.14\frac{0.30}{\sqrt{15}}=10.066[/tex]    

Step-by-step explanation:

Information given

[tex]\bar X= 9.9[/tex] represent the sample mean

[tex]\mu[/tex] population mean (variable of interest)

s=0.3 represent the sample standard deviation

n=15 represent the sample size  

Confidence interval

The confidence interval for the mean is given by the following formula:

[tex]\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}[/tex]   (1)

The degrees of freedom are given by:

[tex]df=n-1=15-1=14[/tex]

Since the Confidence is 0.95 or 95%, the value of [tex]\alpha=0.05[/tex] and [tex]\alpha/2 =0.025[/tex], and the critical value wuld be [tex]t_{\alpha/2}=2.14[/tex]

Now we have everything in order to replace into formula (1):

[tex]9.9-2.14\frac{0.30}{\sqrt{15}}=9.734[/tex]    

[tex]9.9+2.14\frac{0.30}{\sqrt{15}}=10.066[/tex]    

Answer:

74x + 35y = c

Step-by-step explanation:

Each adult ticket costs $74 and Pablo is purchasing x amount of tickets, so 74 multiplied by x would be the total cost for the adult tickets. Each youth ticket costs $35 and Pablo is puchasing y amount of tickets, so 35 multiplied by y would be the total cost for youth tickets. Then you add the two sums together to find the total cost of all of the tickets.

Answer:

d. C = 74x + 35y

Step-by-step explanation:

I took the test and got the answer right here is the screen shoot  to prove it

Answer:

The length of the fence is 6.28x-150 cm.

Step-by-step explanation:

Let the circular pool has the radius (r ) = x cm.

Since the pool is in a circular shape so the circumference will be the length of the fence. Moreover, there is a 150cm wide so we have to subtract the 150 cm from the value of circumference in order to get the actual length of the fence.

Length of fence  = Circumference of the pool – width of the gate.

Length of fence = 2 π r – 150

Length of fence = 2 × 3.14 × x – 150

Length of fence = 6.28x – 150 cm.

Answer:

C

Step-by-step explanation:

C is the solution

Answer:

Option C

Step-by-step explanation:

The graph is a horizontal translation 4 units left and a vertical translation 2 units down ⇒ y= |x+4|-2

Answer:

4. 8 5/12

Step-by-step explanation:

4 2/3 + 3 3/4 =

= 4 + 2/3 + 3 + 3/4

= 4 + 3 + 8/12 + 9/12

= 7 + 17/12

= 7 + 12/12 + 5/12

= 7 + 1 + 5/12

= 8 5/12

Answer:

A

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

If the price is 30% off, you pay 70% of the price

Let x be the original price

.70x = sale price

.70x = 42

Divide each side by .7

.70x/.7 = 42/.7

x =60

The original price is 60

Answer: $ 60

Step-by-step explanation:

42 = x (1 - .3)

42 = .7 x

42/.7 = x

X = 60

Answer:

Option B. is the right choice.

Step-by-step explanation:

f(-3) = 3  and f(3) = 5   (First and the last column of table B)

Best Regards!

Answer:

See step-by-step explanation.

Step-by-step explanation:

Part 1: Use the law of cosines to find the measure of angle B:

Law of cosines: c^2 = a2 + b2 − 2ab cos(C)

In this case, you're finding b, so b is basically c.

b^2 = a2 + c2 − 2ab cos(b)

b=21 a=22 c=16 (just for now)

21^2 = 22^2+16^2- 2(22)(16) cos (b)

441= 484 + 256 - 704 cos(b)

Measure of angle B=  64.8673

Part 2: Use the law of sines to find the measure of angle C

[tex]\frac{a}{sin (A)}[/tex] =[tex]\frac{b}{sin (B)}[/tex]=[tex]\frac{c}{sin(C)}[/tex]

Using angle b and sides b and c: 43.6121

21/ sin ( 64.8673) = 16/ sin(C)

Measure of angle C = 43.6121

Part 3: Find the measure of angle A

1. The angles in a triangle add up 180.

m<A+m<B+m<C=180

m<A+64.8673 + 43.6121 =180

Measure of angle A=71.5206

Page 2

Part 1:  Find the measure of angle B

The angles in a triangle add up 180.

m<A+m<B+m<C=180.

42+ m<B+83=180

Measure of angle B= 55 degrees

Part 2: Use the law of sines to find the length of side a

[tex]\frac{a}{sin (A)}[/tex] =[tex]\frac{b}{sin (B)}[/tex]=[tex]\frac{c}{sin(C)}[/tex]

Length of side a = [tex]\frac{b sin(A)}{sin (B)}[/tex] =[tex]\frac{175 sin(42)}{sin (55)}[/tex]

The length of side a: 142.95

Part 3: Use any method to find the length of side c.

Method= brainpower

aka law of sines:

[tex]c=\frac{a sin (C)}{sin A}[/tex] = [tex]\frac{142.95sin(83)}{sin(42)}[/tex]

c= 212.043

The length of side c: 212.043

Answer:

C) Duran can only use the cost per unit of each process if all units are fully completed at the end of the accounting period.

Step-by-step explanation:

Duran uses cost accounting technique to identify cost per unit for its products. The costing techniques allows us to identify the cost of unit that are not completely finished. It is not necessary that all unit must be completed in order to find out the cost per unit of the product. The process costing is the best method to identify cost per unit for products that are in process.

Answer:

79

Step-by-step explanation:

[tex]score = 29 - (-50)[/tex]

Expressed as: The score is the difference between 29 and -50.

Simplify:

[tex]score = 29 + 50[/tex]

Result:

[tex]score = 79[/tex]

Feel free to ask questions, and don't forget to mark as Brainliest if this helped.

Answer:

Step-by-step explanation:

So, here they said: Jack's scores in five successive rounds were 25,-5,-10..

Then, you should add his grades to know what's his score..

25 - 5 - 10 = 25 - 15 = 10

His total at the end is

Hope this helps you.. Good Luck

Step-by-step explanation:

Frequency of a mass-spring system is:

f = √(k/m) / (2π)

Given f = 2/π Hz and m = 20 kg:

2/π Hz = √(k / 20 kg) / (2π)

4 Hz = √(k / 20 kg)

16 s⁻² = k / 20 kg

k = 320 kg/s²

k = 320 N/m

If the 20 kg mass is replaced with an 80 kg mass, the frequency is:

f = √(320 kg/s² / 80 kg) / (2π)

f = √(4 s⁻²) / (2π)

f = 2 Hz / (2π)

f = 1/π Hz

The sprint constant is 320 N/m

And, the frequency is [tex]1\div \pi Hz[/tex]

Since A 20-kilogram mass is attached to a spring. And, the frequency of simple harmonic motion is 2/p cycles/s.

Now we know that

[tex]f = \sqrt (k\div m) \div (2\pi)[/tex]

Here

[tex]f = 2\div \pi Hz[/tex]

and m = 20 kg:

So,

[tex]2\div \pi Hz = \sqrt (k \div 20 kg) / (2\pi)\\\\4 Hz = \sqrt(k \div 20 kg)\\\\16 s^{-2} = k \div 20 kg[/tex]

k = 320 kg/s²

k = 320 N/m

Now the frequency is:

[tex]f = \sqrt(320 kg/s^2 \div 80 kg) \div (2\pi)\\\\f = √(4 s^{-2}) \div (2\pi )\\\\f = 2 Hz \div (2\pi)[/tex]

[tex]f = 1\div \pi Hz[/tex]

Learn more about mass here: https://brainly.com/question/20897998

Answer:

x = 12

y = 12

Step-by-step explanation:

Each triangle is a right angle triangle

5² + x² = 13²

x² = 169 - 25

x = √144

x = 12

The shape is a parallelogram

Therefore

x = y

y = 12

Answer:

10/91

Step-by-step explanation:

Number of Red balls = 4

Number of Yellow balls = 3

Number of green balls=7

Total=4+3+7=14

If we pick three balls of the same color, there are three possibilities: (All Red, All Green Or all Yellow).

Therefore:

The probability that all three balls are the same color (note that the selections are without replacement)

=P(RRR)+P(GGG)+P(YYY)

[tex]=(\frac{4}{14} \times \frac{3}{13} \times \frac{2}{12})+(\frac{3}{14} \times \frac{2}{13} \times \frac{1}{12})+(\frac{7}{14} \times \frac{6}{13} \times \frac{5}{12})\\\\=\frac{1}{91} + \frac{1}{364}+ \frac{5}{52}\\\\=\frac{10}{91}[/tex]

The probability that all three balls are the same color is 10/91.

Complete Question

Grandpa and Grandma are treating their family to the movies. Matinee tickets cost $4 per child and $4 per adult. Evening tickets cost $6 per child and $8 per adult. They plan on spending no more than $80 on the matinee tickets and no more than $100 on the evening tickets. Could they take 9 children and 4 adults to both shows? Show your work. A yes or no answer is not sufficient for credit.

Answer:

Yes it is  possible to take the  9 children and 4 adults to both shows

Step-by-step explanation:

From the question we are told that

    The  cost of the Matinee tickets for a child is  z =  $4

    The  cost of the Matinee tickets for an adult is  a  = $ 4

     The cost of the Evening tickets for  a child is  k =  $6

      The cost of the Evening tickets for an adult is  b =  $8    

      The  maximum amount to be spent on Matinee tickets is  m = $80

       The maximum amount to be spent on Evening tickets is  e =  $100

       The  number of child to be taken to the movies is  n  = 9

        The number of adults to be taken to the movies is  j  =  4

Now the total amount of money that would be spent on Matinee tickets is  mathematically evaluated as      

           [tex]t = 4 n + 4 j[/tex]

substituting values

           [tex]t = 4 * 9 + 4* 4[/tex]

           [tex]t = 52[/tex]

Now the total amount of money that would be spent on  Evening ticket is mathematically evaluated as      

      [tex]T = 6n + 8j[/tex]

substituting values

     [tex]T = 6(9) + 8(4)[/tex]

    [tex]T = 86[/tex]

This implies that it is possible to take 9 children and 4 adults to both shows

given that

      [tex]t \le m[/tex]

i.e  $56  [tex]\le[/tex]$ 80

and  

      [tex]T \le e[/tex]

i.e   $ 86 [tex]\le[/tex] $ 100

The published data refers to the government census info being published online. She did not do an observational study because she didn't go to each household herself (rather let the census workers do that task).

The data is quantitative because she is looking at the number of people living in homes in her city. Quantitative data is simply dealing with quantities or numbers. Contrast this with qualitative data that talks about something like color choice.

Answer:

D: Kira used published data that is quantitative.

Step-by-step explanation:

edg2020

Quantitative means regarding numbers and facts. How many people live in homes in her city is a factual number that is quantitative data. What color shirt they are all wearing is qualitative.. Its not an observational study at all either, so A and B are false

Answer:

x=1, y=1

Step-by-step explanation:

To solve the equations, we first have to label them.

4x +6y= 10 -----(1)

-10x +2y= -8 -----(2)

From (1): 2x +3y= 5 -----(3)

From (2):

-5x +y= -4

y= 5x -4 -----(4)

Subst. (4) into (3):

2x +3(5x -4)= 5

2x +15x -12= 5 (expand)

17x= 12 +5 (simplify, +12 on both sides)

17x= 17 (simplify)

x= 17 ÷17

x= 1

subst. x=1 into (4):

y= 5(1) -4

y= 5 -4

y= 1

Answer:

y = 4x + 9

Step-by-step explanation:

You can use these numbers to create an equation in slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept.

y = mx + b

y = 4x + 9

Answer:

  x ≈ 48.3177

Step-by-step explanation:

This is what logarithms are for (among other things).

  log(1.1^x) = log(100)

  x·log(1.1) = 2

  x = 2/log(1.1) ≈ 48.3177