Mila has 9 buttons. Mia has 225 buttons. Mia has how many times as Mila?

John has 7 five-dollar bills, 5 ten-dollar bills and 3 twenty-dollar bills.

Total number of bills with John = 15

Total money with John = $145

John has a mix of $5, $10 and $20 bills

Let the number of $5 bills be x, $10 bills are y and $20 bills be z

Formulating the equations:

5x + 10y + 20z = 145-------(1)

x + y + z = 15--------(2)

As per the question, the number of ten dollar bills is one less than twice the number of twenty dollar bills:

y = 2z - 1

Putting y = 2z-1 in equating (1) and (2) we get:

5x + 10(2z-1) + 20z = 145

5x + 20z - 10 + 20z = 145

5x + 40z = 155--------(3)

x + y + z = 15

x + 2z - 1 + z = 15

x + 3z = 16--------(4)

Multiplying equation (4) with 5 and using Gaussian Elimination to equate (3) and (4)

5x + 40z = 155

5x + 15z = 80

25z = 75

z = 3

Putting z=3 in (4) we get

x = 7 and y = 5

So, John has 7 five-dollar bills, 5 ten-dollar bills and 3 twenty-dollar bills.

Learn more about linear equations:

https://brainly.com/question/11897796

#SPJ1

Answer:

The right solution is "0.196".

Step-by-step explanation:

The given values are:

Standard deviation,

\(\sigma=1 \ minute\)

Sample size,

\(n=100\)

Confidence level,

\(c=95\)%

  \(=0.95\)

Now,

For \(\alpha=1-c\)

         \(= 1-0.95\)

         \(=0.05\)

then,

\(Z_{\frac{\alpha}{2} } = Z_{\frac{0.05}{2} }\)

     \(=Z_{0.025}\)

     \(=1.96\)

The margin or error will be:

⇒ \(E=Z_{\frac{\alpha}{2} } (\frac{\sigma}{\sqrt{n} })\)

On substituting the values, we get

       = \(1.96(\frac{1}{\sqrt{100} })\)

       = \(1.96\times \frac{1}{10}\)

       = \(0.196\)

Answer:

92

Step-by-step explanation:

you must first divided both sides of the equation by 7 then it will come to the answer p=92

Answer:

×=-11

Step-by-step explanation:

3x+21=-12

3×=-33

×=-11

Answer:

x=-11

x+7=-4

Step-by-step explanation:

3(x+7)=-12

3x+21=-12

3x=-12-21

3x=-33

x=-33/3

x=-11

-11+7=-4

Answer:

y = 4\(\sqrt{5}\) , ? = 10

Step-by-step explanation:

using Pythagoras' identity on the smallest right triangle

x² = 4² + 2² = 16 + 4 = 20 ( take square root of both sides )

x = \(\sqrt{20}\) = \(\sqrt{4(5)}\) = \(\sqrt{4}\) × \(\sqrt{5}\) = 2\(\sqrt{5}\)

using Pythagoras' identity on the middle right triangle

y² = 8² + 4² = 64 + 16 = 80 ( take square root of both sides )

y = \(\sqrt{80}\) = \(\sqrt{16(5)}\) = \(\sqrt{16}\) × \(\sqrt{5}\) = 4\(\sqrt{5}\)

using Pythagoras' identity on the largest right triangle

?² = x² + y² = (2\(\sqrt{5}\) )² + (4\(\sqrt{5}\) )² = 20 + 80 = 100

Take square root of both sides

? = \(\sqrt{100}\) = 10

Answer:

The probability that a randomly selected student is female or a physics major is 0.65.

Step-by-step explanation:

Note: This question is not complete. A complete is therefore provided before answering the question as follows:

A physics class has 40 students. Of these, 14 students are physics majors and 18 students are female. Of the physics majors, six are female. Find the probability that a randomly selected student is female or a physics major. The probability that a randomly selected student is female or a physics major is_______.

The Step-by-step explanation is therefore provided now as follows:

The probability that a randomly selected student is female or a physics major can be calculated using the following formula:

P(PM or F) = P(PM) + P(F) - P(PMF)

Where;

P(PM or F) = Probability of student selected is Physics Major or Female = ?

P(PM) = Probability of student selected is Physics Major = Number of Physics Major / Total number of students in the Physics class = 14 / 40 = 0.35

P(F) = Probability of student selected is Female = Number of female students in the Physics class / Total number students in the Physics class = 18 / 40 = 0.45

P(PMF) = Probability of student selected is Physics Major and Female = Number Physics Major that female in the Physics class / Total number students in the Physics class = 6 / 40 = 0.15

Substituting the values into equation (1), we have:

P(PM or F) = 0.35 + 0.45 - 0.15 = 0.65

Therefore, the probability that a randomly selected student is female or a physics major is 0.65.

Answer:

what is the physics question

Step-by-step explanation:

The values of ab, b - c, and c/d are 6, -1, and 4 respectively when a = 2, b = 3, c = 4 and d = 1.Using BODMAS rule, we can simplify the given expression.ab - c/d = 24

Given ab-c/d has a value of 24.Now, we have to find the value ofab, b - c, and c/d.Multiplying d on both sides, we getd(ab - c/d) = 24dab - c = 24d...(1)Now, we can find the value of ab, b - c, and c/d by substituting different values of a, b, c and d.Value of ab when a = 2, b = 3, c = 4 and d = 1ab = a * b = 2 * 3 = 6.

Value of b - c when a = 2, b = 3, c = 4 and d = 1b - c = 3 - 4 = -1Value of c/d when a = 2, b = 3, c = 4 and d = 1c/d = 4/1 = 4Putting these values in equation (1), we get6d - 4 = 24dSimplifying, we get-18d = -4d = 2/9

For more such questions on BODMAS rule

https://brainly.com/question/28832666

#SPJ8

Answer:

$32

Step-by-step explanation:

55-(9•3)+4

Answer:

Y = -5/3 + 2/3x

Step-by-step explanation:

subtract x to the other side

Then divide the equation by -3

Answer:

j=24

Step-by-step explanation:

j/8 - 2 = 1

j/8 - 2 + 2 = 1 + 2

j/8 = 3

8 * j/8 = 8 * 3

j=24

The vertex of the given equation is (0,12) and (1, -10). The value of y-intercept will be -12.

Given equation :

y=(x−2)2−8

y = 2x - 4 - 8

= 2x - 12

The final equation is y = 2x - 12.

Compare this equation with slope and y-intercept formula :

y = mx+c

So that c = -12

The value of y-intercept according to the solution is -12.

To find the vertex. Let's assume x=0; Substitute in the equation

y = 2(0) -12

y = -12

The first vertex will be (0, -12)

If x = 1; y = 2(1) -12

y = -10

Then the second vertex will be (1, -10).

Hence, the vertex of the given equation is (0,12) and (1, -10). The value of y-intercept will be -12.

To know more about equation check the below link:

https://brainly.com/question/17145398

#SPJ1

Answer:

1. the slop of a line perpendicular to that line is: 7/4.

2. the slope of a line parallel to that line is: - 4/7

Step-by-step explanation:

To get the perpendicular line you have to find the negative reciprocal of the slope of the original line. and lines with the same slope are parallel.

Answer

248.3712

Step-by-step explanation:

2(H*W)+2(H*L)

2(5.78*6.72)+2(6.72*12.7)= 248.3712                                                                                                                  

Answer

The values of a that ensures that the system has at least one solution is

a > (21/127)

Explanation

We are told to find the values of a that ensures that the system has at least one solution. The system of equations include

3 (a - 5x) < 1 + x

2 - (x/2) > 3 + 5 (x - a)

To do this, we need to solve the expressions

3 (a - 5x) < 1 + x

3a - 15x < 1 + x

We can rewrite this as

1 + x > 3a - 15x

x + 15x > 3a - 1

16x > 3a - 1

Divide both sides 16

We then solve the second one. But to do this, let's multiply through by 2

2 - (x/2) > 3 + 5 (x - a)

4 - x > 6 + 10 (x - a)

we can rewrite as

6 + 10 (x - a) < 4 - x

6 + 10x - 10a < 4 - x

10x + x < 10a - 6 + 4

11x < 10a - 2

Divide both sides by 11

The two solutions are

x > (3a/16) - (1/16)

x < (10a/11) - (2/11)

To find a lasting solution, we need the inequality sign to be the same, so, we need to multiply through one of the equations by -1

x > (3a/16) - (1/16)

-x < (-3a/16) + (1/16)

So, the system of equations become

-x < (-3a/16) + (1/16)

x < (10a/11) - (2/11)

We can then add the two equations

-x + x < (-3a/16) + (1/16) + (10a/11) - (2/11)

0 < (-3a/16) + (10a/11) + (1/16) - (2/11)

0 < -0.1875a + 0.9091a + 0.0625 - 0.1818

0 < 0.7216a - 0.1193

Rewrite

0.7216a - 0.1193 > 0

0.7216a > 0.1193

Divide both sides by 0.7216

(0.7216a/0.7216) > (0.1193/0.7216)

a > 0.1653

a > (21/127)

Hope this Helps!!!

Answer:

25000

Step-by-step explanation:

Answer:

Step-by-step explanation:

15/2

Answer:

C

Step-by-step explanation:

Multiply the exponents

Reduce the gcf

Hope ghis helps! :)

Answer:

Step-by-step explanation:

step 1:

determining the values for standard form for the equation of a line,

y = mx + c

Step 2:

calculation of m, where m is the gradient or slope which determines how steep the line is.

step 3:

calculation of c, where c is the height at which the line crosses the y - axis also known as y - intercept

Answer:

B

Step-by-step explanation:

Proportional relationships go through the origin (0,0) and have a constant rate of change.

Regarding proportional relationships, when graphed the line should be straight and go through the origin (0,0)

All graphs appear to have straight lines.

However graph B has a line that doesn't go through the origin, therefore B represents a non proportional relationship

Answer:

Step-by-step explanation:

assume the equation is (7x-4)/y=10

10y= 7x-4 didvide both sides by 10

y= (7/10)*x - (2/5)

m=7/10

b=-2/5

The equation for 7x - 4/y =10 in the form y = mx + b . The equation in the form

\(\(y = mx + b\) is: \[y = \frac{4}{7x - 10}\]\)

To rewrite the equation in the form  we need to  \(\(y = mx + b\),\)  isolate the term involving y on one side of the equation. Here's the step-by-step process:

Step 1: Add  \(\(\frac{4}{y}\)\)  to both sides of the equation to isolate the 7x term on the left side:

\(\[7x = 10 + \frac{4}{y}\]\)

Step 2: Get rid of the fraction by multiplying both sides of the equation by y:

\(\[7xy = 10y + 4\]\)

Step 3: Now, we want to express  y alone on one side. To do this, subtract 10y  from both sides:

\(\[7xy = 10y + 4\]\)

Step 4: Factor out y on the left side:

\(\[y(7x - 10) = 4\]\)

Step 5: Finally, divide both sides by to solve for  \(\((7x - 10)\)\)

\(\[y = \frac{4}{7x - 10}\]\)

Now, the equation is in the form where \(\(y = mx + b\), \(m\)\) is the coefficient of x and b is the constant term. In this case,\(\(m = \frac{4}{7x - 10}\) and \(b\)\)  is equal to 0.

To know more about equation:

https://brainly.com/question/2419445

#SPJ2

The zeros with each multiplicity are given as follows:

The factor theorem is used to define the functions, which states that the function is defined as a product of it's linear factors, if x = a is a root, then x - a is a linear factor of the function.

Considering the linear factors of the function in this problem, the zeros are given as follows:

More can be learned about the Factor Theorem at brainly.com/question/24729294

#SPJ1

The new coordinates of the image of the shape are

The picture of the graph showing the image is attached

The rule for 90 degrees clockwise rotation is

(x, y) becomes (y, -x)

The rule involves interchanging the coordinates of the ordered pair such that x takes the place of y and y tales the place of x and a change of sign

performing the rotation we have the new coordinates as below

(2, 3) becomes (3, -2)

(2, 2) becomes (2, -2)

(4, 2) becomes (2, -4)

Learn more about rotation at

https://brainly.com/question/26249005

#SPJ1

Answer:

80 percent of 16 is 12.8 I'm sorry but that's all I know

Answer:

Bobby has 45 beads

Step-by-step explanation:

Let x be the number of beads Bobby has.

Then, (x + 30) is the number of beads Alvin has.

Then, 3 (x + 30) is the number of beads Cathy has.

3 (x + 30) + (x + 30) + x = 345

3x + 90 + x + 30 + x = 345

5x + 120 = 345

5x = 225

x = 45

Therefore, Bobby has 45 beads.

Answer:

Hope this helped.

Step-by-step explanation:

2:x=2y+20  y=1/2x-10

4:x=4/5y+15/5 y=5/4x-4

6:x=-2y+10  y=-1/2x+5

8:x=-7/3y+100/3  y=-3/7x+100/7

The associated p-value for this left-tailed t-test is 0.0359 or 3.59%.

Now, The p-value for a one-tailed t-test with a sample size of 18 and a test statistic of 1.9,

Hence, we need to look up the t-distribution table.

So, Using a one-tailed test with,

df = n - 1

= 18 - 1 = 17 degrees of freedom

We find that the area to the left of 1.9 under the curve is 0.0359.

This means that there is a 3.59% probability of observing a t-statistic less than or equal to 1.9 if the null hypothesis is true.

Therefore, the associated p-value for this left-tailed t-test is 0.0359 or 3.59%.

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ1

Answer:

6.92 x 1,000= 6,920

Step-by-step explanation: Hope this helps

Answer:

Step-by-step explanation:

y2-y1/x2-x1

-1-(-4)/3-7

3/-4

y=mx+b

For the y coordinate it can be either -4,or -1

-4=3/-4x+b

b=13/4