Sheri saves nickels and dimes in a coin purse for her daughter. The total value of the coins in the purse is $0.70. The number of nickels is two less than six times the number of dimes.
How many nickels and how many dimes are in the coin purse?

Answer:

Use desmos graphing calculator. Thats basically the answer to everything that involves graphing. gimme brainliest >:D

Step-by-step explanation:

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

You can identify the lines by the sign of the slope and the value of the y-intercept. Each point of interest is at the intersection of a line with positive slope and a line with negative slope. So, you can identify the pair of lines by their two different y-intercepts.

Clockwise from lower left (3rd quadrant), the pairs of y-intercepts associated with the intersection of interest are ...

If the answer choices are designated A–E, left to right, the corresponding list is (again, clockwise from lower left) ...

Answer:

The modal class is 1 - 10

Step-by-step explanation:

Given

See attachment for frequency distribution table

Required

Determine the modal class

To determine the modal class, we simply look for the class with the highest frequency.

In the given frequency distribution table, class 1 - 10 has the highest frequency of 21.

Hence, the modal class is 1 - 10

Answer:

3,0

0, -10

Step-by-step explanation:

Answer:

#8 might be y= -3x + 5

Step-by-step explanation:

This may help

Answer:

2=53 employees(m)

4=91 employees(m)

6=129 employees(m)

8=167 employees(m)

Step-by-step explanation:

19x2=38+15= 53

19x4=76+15= 91

19x6=114+15=129

19x8=152+15=167

Answer:

5x - 17

Step-by-step explanation:

3 + 5x - 20

= 5x - 17

Answer:

N = 20

Step-by-step explanation:

5/3 = 1 2/3

20/12 = 1 8/20

They are equivalent

(2,2),(3,1),(5,2)

---

hope it helps

Answer:26

Step-by-step explanation:60 minus 6, equals 52. you need to do 60-6 to get the twice the sum of a number. divide 52 by 2, since its twice the sum of a number. 52 divided by 2 is 26. you can check your answer by doing 26 times 2 plus 6, and get 60.

The state space for the Markov chain {Xn} is {0, 1, 2}. At any time, Xn can only be 0, 1, or 2, depending on how many red balls are in the urn.

The transition probabilities for the Markov chain are as follows:

If Xn = 0, the next state Xn+1 can only be 1, with a probability of 1.0.

If Xn = 1, the next state Xn+1 can either be 0 or 2, with a probability of 0.5 each.

If Xn = 2, the next state Xn+1 can only be 1, with a probability of 1.0.

So, the transition probabilities can be represented in a transition matrix as follows:

P = [  [0, 1, 0],

 [0.5, 0, 0.5],

 [0, 1, 0]

]

This transition matrix represents the probabilities that the Markov chain will transition from one state to another in one step.

Learn more about Markov chain here brainly.com/question/29376803

#SPJ4

The volume of the region bounded above by the paraboloid z = \(x^2 + y^2\)and below by the square R: -1 < x < 1, -1 < y < 1 is 4/3 cubic units.

To find the volume of the region bounded above by the paraboloid z = \(x^2 + y^2\) and below by the square R: -1 < x < 1, -1 < y < 1, we need to integrate the function z = x^2 + y^2 over the given region.

The volume can be calculated using a double integral over the region R. The integral can be set up as follows:

V = ∬R \((x^2 + y^2) dA\)

Here, dA represents the infinitesimal area element on the xy-plane.

To evaluate the integral, we need to perform the double integration over the given limits. The limits of integration for x are -1 to 1, and the limits for y are also -1 to 1.

V = ∫(-1 to 1) ∫(-1 to 1) \((x^2 + y^2) dy dx\)

Integrating with respect to y first:

V = ∫(-1 to 1) \([(x^2)y + (y^3)/3]\)evaluated from -1 to 1 dx

V = ∫(-1 to 1) \([(x^2 + 1/3) - (x^2 - 1/3)] dx\)

V = ∫(-1 to 1) (2/3) dxV = (2/3) [x] evaluated from -1 to 1

V = (2/3) [(1) - (-1)]

V = (2/3) * 2

V = 4/3

Therefore, the volume of the region bounded above by the paraboloid z = x^2 + y^2 and below by the square R: -1 < x < 1, -1 < y < 1 is 4/3 cubic units.

Learn more about paraboloid here:

https://brainly.com/question/29635857

#SPJ8

Answer:

A

Step-by-step explanation:

For a right triangle

\(A=\frac{ab}{2} \\\frac{(10.4)(15.3)}{2} =79.56\)

This is the same as the other triangle because they are the same size because of congruency

Area of the rectangle

\(a^2+b^2=c^2\\\)

\(\sqrt{(10.4^2+15.3^2} =c\)

\(c= 18.5\)

18.5 x 7 = 129.5

Add them all up

129.5+79.56+79.56= 288.62

Answer: D) (-19,-13), see attached picture

Step-by-step explanation:

Answer: x=3\(\sqrt{2\). y=3\(\sqrt{2\)

Step-by-step explanation: This is a 45-45-90 triangle. Both of the legs, x and y, are congruent. To find the length of the legs, divide 6, the hypotenuse, by \(\sqrt{2\). 6/\(\sqrt{2\)=3\(\sqrt{2\).

Answer:

Step-by-step explanation:

To check whether the given credit card number is valid or not, we need to apply the Luhn algorithm or the mod-10 algorithm. The Luhn algorithm works by adding up all the digits in the credit card number and checking if the sum is divisible by 10 or not. If it is, then the credit card number is considered valid, otherwise, it is invalid.

Let's apply the Luhn algorithm to the given credit card number:

Step 1: Starting from the rightmost digit, double every second digit

| 5 | 4 | 2 | 4 | 9 | 8 | 1 | 3 | 2 | 7 | 2 | 0 | 0 | 0 | 8 | 5 |

|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

| | 8 | | 8 | | 16| | 6 | | 14| | 0 | | 0 | | 10|

Step 2: If the doubled value is greater than 9, add the digits of the result

| 5 | 4 | 2 | 4 | 9 | 8 | 1 | 3 | 2 | 7 | 2 | 0 | 0 | 0 | 8 | 5 |

|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

| | 8 | | 8 | | 7 | | 6 | | 5 | | 0 | | 0 | | 1 |

Step 3: Add up all the digits in the credit card number, including the check digit

5 + 4 + 2 + 4 + 9 + 8 + 1 + 3 + 2 + 7 + 2 + 0 + 0 + 0 + 8 + 5 + 1 = 61

Step 4: If the sum is divisible by 10, then the credit card number is valid, otherwise, it is invalid.

61 is not divisible by 10, therefore the given credit card number is invalid.

Hence, it can be concluded that 5424 9813 2720 0085 is an invalid MASTERCARD credit card number.

Algebra transformation

for  Graph1 f(x)=f(x)+4

for  Graph2 f(x)=-f(x-4)

for  Graph3 f(x)=f(x-7)

for  Graph4 f(x)=f(x-2)-5

In mathematics, the reflection of a graph is a transformation that produces a mirror image of the original graph across a specific line or point. The line or point across which the reflection occurs is called the axis of reflection.

Graph1

Transform the graph by +4 units in y direction.

f(x)=f(x)+4

Graph2

Transform the graph by +4 units in x direction.

f(x)=f(x-4)

Now take the reflection of graph about x axis

f(x)=-f(x-4)

Graph3

Transform the graph by +7 units in x direction.

f(x)=f(x-7)

Graph5

Transform the graph by -5 units in y direction.

f(x)=f(x)-5

Now Transform the graph by -2 units in x direction.

f(x)=f(x-2)-5

To know more about line, visit:

https://brainly.com/question/30003330

#SPJ1

Answer: An implicit function is a function, written in terms of both dependent and independent variables, like y-3x2+2x+5 = 0. Whereas an explicit function is a function which is represented in terms of an independent variable.

Step-by-step explanation: To find the implicit derivative,

Differentiate both sides of f(x, y) = 0 with respect to x.

Apply usual derivative formulas to differentiate the x terms.

Apply usual derivative formulas to differentiate the y terms along with multiplying the derivative by dy/dx.

Solve the resultant equation for dy/dx (by isolating dy/dx).

Given polynomial is

We have to check whether the polynomial x-2 is a factor.

If x-2 is a factor then x = 2 is a root of the given polynomial.

Substitute x = 2 in the given polynomial,

Hence 2 is not a root of given polynomial.

And so x - 2 is not a factor.

Answer: x=0,\root(3)(3)

Step-by-step explanation: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Brainliest or a thank you please? :))

9514 1404 393

Answer:

  associative property of multiplication

Step-by-step explanation:

We assume your equation is ...

  9(3x) = (9·3)x

The parentheses have moved to a different portion of the product. This is allowed by the associative property of multiplication. It lets you associate parts of the product any way you like.

_____

Additional comment

It is not a good idea to use "x" to indicate multiplication in an expression in which "x" is a variable. There are many other ways to indicate multiplication, including using the "times" symbol (×).

Answer:

30%

Step-by-step explanation:

Note that the coordinates of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4). (Option B)

To rotate a point 90 degrees  clockwise about a given point,we can follow these steps -

Translate the coordinates   of the given point so that the center of rotation is at the origin.   In this case,we subtract the coordinates   of the center (0,1) from the coordinates of point A (5,4) to get (-5, 3).

Perform the rotation by swapping the x and y coordinates and changing the sign of the   new x coordinate. In this case,we  swap the x and y coordinates of (-5, 3)   to  get (3, -5).

Translate the coordinates back to their original position   by adding the coordinates of the center (0,1)  to the result from step 2. In   this case, we add (0,1) to (3, -5) to get (3, -4).

Therefore, the coordinates   of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4).

Learn more about coordinates at:

https://brainly.com/question/17206319

#SPJ1

To divide a mixed number by a fraction, we need to convert the mixed number into an improper fraction and then multiply it by the reciprocal of the fraction.

Step 1: Convert the mixed number to an improper fraction:

7 5/6 = (6 * 7 + 5) / 6 = 47/6

Step 2: Multiply the improper fraction by the reciprocal of the fraction:

47/6 ÷ 2/3 = 47/6 * 3/2

Step 3: Simplify the fraction if possible:

47/6 * 3/2 = (47 * 3) / (6 * 2) = 141/12

Step 4: Simplify the fraction further, if necessary:

141/12 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 3:

141/12 = (141 ÷ 3) / (12 ÷ 3) = 47/4

Therefore, 7 5/6 ÷ 2/3 is equal to 47/4 or 11 3/4.

Answer is below,

X=15

Answer=X=15

Sorry for bad quality.

Good luck !

Answer:

Length=45cm Breadth=15cm

Step-by-step explanation:

Breadth=x

Hence length=3x

Perimeter=120cm

Perimeter of rectangle= 2×(l+b)

120=2×(3x+x)

120/2=4x

4x=60

x=60/4

x=15

Hence breadth comes out to be 15cm, hence length will be 3×15=45cm

Hope this helps you. Have a nice day buddy!

The effect Lola's  mass decreasing has on the the mean and median

Given  values :  

5 African elephants

The mean mass of the elephants was  3800 kg

The median mass of the elephants was  3600 kg

The smallest elephant, named Lola, weighed 2700 kg

Lola then got very sick and lost weight until her mass reached 1800 kg

2700  ,    A    ,  3600 ,   B    ,  C      

as Median is 3600 and lowest is 2700

now 2700 becomes 1800

1800  ,  A  , 3600  , B , C

so Median remains the same as 3600

So we notice no change in Median

The mean mass of the elephants =  3800 kg

=> total weight = 5 x 3800 = 19000 kg

2700 kg becomes 1800 kg

total mass = 19000 - 2700 + 1800

= 181000 kg

The following can be inferred :

New Mean = 18100/5   = 3620  kg

Mean reduced by 3800 - 3620  = 180 kg

No change in Median weight

Mean reduced by 180 kg

Learn More about  Mean at:

https://brainly.com/question/1136789

#SPJ1

Answer:

The calculated value Z = 1.5950 < 1.96 at 0.05 level of significance

The null hypothesis is accepted at a 0.05 level of significance

The proportion of cell phone owners in that country who have a smartphone has not increased over time

Step-by-step explanation:

Step(i):-

Given that the random sample size 'n' = 934

Given that the population proportion P = 0.51

                                                            Q= 1-P

                                                           Q = 1- 0.51 = 0.49

The sample proportion

                                   \(p = \frac{x}{n} = \frac{501}{934} = 0.5364\)

Level of significance = 0.05

Critical value Z₀.₀₅ = 1.96

Step(ii):-

Null hypothesis:  P < 0.51

Alternative Hypothesis : P > 0.51

  Test statistic

                    \(Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }\)

                   \(Z = \frac{0.536-0.51}{\sqrt{\frac{0.51 x 0.49}{934} } }\)

                  Z =  1.5950

Final answer:-

Given that P-value 0. 0532

P-value > 0.05

Rejected Alternative Hypothesis and accepted null hypothesis

               ( OR)

The calculated value Z = 1.5950 < 1.96 at 0.05 level of significance

The null hypothesis is accepted at a 0.05 level of significance

The proportion of cell phone owners in that country who have a smartphone has not increased over time