Help me with number 7 plz

The probability that Calista randomly chooses two five-dollar bills from her wallet is 1/36.

To calculate the probability of Calista choosing two five-dollar bills from her wallet, we start by determining the total number of ways she can choose two bills from her wallet, regardless of their denomination. Calista has a total of 9 bills (4 ones, 2 fives, and 3 tens), so the total number of ways to choose two bills is calculated using the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number of items and k is the number of items to choose.

The total number of ways to choose 2 bills from 9 is C(9, 2) = 9! / (2!(9-2)!) = 36. Next, we need to find the number of ways to choose 2 five-dollar bills from the 2 she has, which is simply C(2, 2) = 2! / (2!(2-2)!) = 1. The probability that both bills are five-dollar bills is then the number of ways to choose 2 fives divided by the total number of ways to choose any 2 bills, or P(both fives) = 1 / 36.

Answer:

It is incorrect,

Step-by-step explanation:

The factors of 4 are 1, 2, and 4. The number 4 has three factors.

Although 2 × 2 is 4, the factor 2 is only counted once.

Adam's claim that the number 4 has four factors is incorrect; the number 4 has only three factors: 1, 2, and 4.

Adam's statement that the number 4 has four factors is incorrect. The factors of a number are the integers that can be multiplied together to result in the original number. The number 4 has three factors, not four. These factors are 1, 2, and 4 itself.

Here's why: The factor 1 is a universal factor because it can divide into any number without leaving a remainder. The number 2 is a factor of 4 because 2 x 2 equals 4. Finally, the number itself, 4 in this case, is always a factor because 4 x 1 equals 4. Listing out all the factors of 4, we would not find any number other than 1, 2, and 4 that can multiply together to produce 4.

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The linear equation y=1/2x -2 can be graphed by first plotting the y-intercept, then using the slope to plot additional points.

Such equations can be graphed using a few different methods. One common approach is plotting data pairs on a coordinate grid.

For the given equation y = 1/2x - 2, it is convenient to begin by identifying b, which is the y-intercept. In our case, b equals -2. This is the point where the line crosses the y-axis. Next we need to understand what the slope (1/2 in our equation) means: for every step we move to the right along the x-axis (in the positive direction), we move half a step up along the y-axis.

To graph the equation, you start at the y-intercept (0,-2) and use the slope to identify subsequent points. For instance, if x = 2, then y = 1/2*2 - 2 = -1.  Repeat this process with different x-values to plot enough points, and then connect them to draw the line written by the equation.

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Answer:

40,12

Step-by-step explanation:

u count how many x's u have.4(for the first square)

add up the regular numbers

so u should have4x+50

repeat for the second one

so u should have 4x+25=6x+20

solve

u get 2x=30 simplify

u get 15

now plug it in and there is ur answer

The value of length and width for Cat's driveway are  25 ft and 7.5 ft respectively.

A rectangle is a type of parallelogram having equal diagonals.

All the interior angles of a rectangle are equal to the right angle.

The diagonals of a rectangle do not bisect each other.

Given that,

The length and width of Cat's driveway are 25 ft and x ft respectively.

And, the length and width of Fred's driveways are 2x ft  and x + 10 ft respectively.

The perimeter of a rectangle is given as,

2(l + b)

Substitute the values to obtain the perimeters as,

Perimeter of Cat's driveway = 2( x + 25) ft

And, perimeter of Fred's driveway = 2(2x + x + 10) ft.

As per the question,

2( x + 25) = 2(2x + x + 10)

=> ( x + 25) = (2x + x + 10)

=> x = 15/2

       = 7.5

Hence, the length and width of Cat's driveway are 25 ft and 7.5 ft respectively.

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The remainder when 4z is divided by 8 is 4

From the question, when z is divide by 8, the remainder is 5. But we do not know the quotient.

From the formula

[tex]\frac{Dividend}{Divisor}= Quotient + \frac{Remainder}{Divisor}[/tex]

Here, the dividend is z, divisor is 8, and the remainder is 5.

Let the quotient be x, then we can write that

[tex]\frac{z}{8} = x + \frac{5}{8}[/tex]

Now, to determine the remainder when 4z is divided by 8,

Multiply both sides of the equation by 4

[tex]4 \times\frac{z}{8} =4\times( x + \frac{5}{8})[/tex]

[tex]\frac{4z}{8} = 4x + \frac{20}{8}[/tex]

Then,

[tex]\frac{4z}{8} = 4x +2+ \frac{4}{8}[/tex] (NOTE: [tex]\frac{Remainder}{Divisor}[/tex]must be a proper fraction)

[tex]\frac{4z}{8} = (4x +2)+ \frac{4}{8}[/tex]

Compare this to the formula [tex]\frac{Dividend}{Divisor}= Quotient + \frac{Remainder}{Divisor}[/tex]

The remainder is 4

Hence, the remainder when 4z is divided by 8 is 4.

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The numerical expression with parentheses for the total number of pieces of wood Jordan chopped is (20 + 30 ) 10  + 5.

In mathematics, parentheses are used to indicate a portion of an equation or expression that must be solved first before any further calculations may be made. The solution substitutes the expression in the more complex mathematical equation; the portion between the two parentheses is considered as one integer.

Given, As winter approaches, Jordan starts cutting wood. He uses the same procedure for ten days straight: He cuts 20 pieces of wood in the morning and another 30 pieces in the evening. Jordan cuts just 5 pieces of wood on the eleventh day. Hence,

Equation for 10 days = (20 + 30) * 10

Equation for 11 days = (20 + 30) * 10 + 5

Therefore, Jordan cut a total of 20 pieces of wood, which is expressed mathematically as (20 + 30) 10 + 5.

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so then P could be any number greater then or equal to 200,hope this helps,please vote me brainliest

The value of p can be 200 or more than 200.

Algebra is a branch of mathematics that deals with symbols and the arithmetic operations across these symbols. These symbols do not have any fixed values and are called variables. In our real-life problems, we often see certain values that keep on changing. But there is a constant need to represent these changing values. Here in algebra, these values are often represented with symbols such as x, y, z, p, or q, and these symbols are called variables. Further, these symbols are manipulated through various arithmetic operations of addition, subtraction, multiplication, and division, with an objective to find the values.

given:

one half of a number is at least 100.

So,

let the number be x

1/2*x= 100

x= 100*2

x= 200

Hence, the value of p ≥ 200.

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Answer:

2k/2,000

Step-by-step explanation:

we know 1676 turns into 2k

Tony has a total of 150 pieces of gum in three packages, calculated by multiplying the number of packages (3) by the number of packs per package (5) and the number of pieces per pack (10).

To calculate the number of pieces of gum Tony has in all three packages, we need to multiply the number of packages by the number of packs in each package, and then by the number of pieces in each pack. First, we have 3 packages and each package contains 5 packs of gum. So, the total number of packs in the three packages is:

Next, each pack has 10 pieces of gum, so the total number of pieces of gum in all the packs is:

Therefore, Tony has a total of 150 pieces of gum in the three packages.

City hall to post office = 6 1/2 miles

City hall to library site = 1 1/4 miles

library site to post office = unknown. let it be x.    5 1/4 miles

1 1/4 miles + x = 6 1/2 miles

x = 6 1/2 miles - 1 1/4 miles

Find x.

1) convert the mixed fractions into fractions. 6 1/2 = 13/2 ; 1 1/4 = 5/4

x = 13/2 - 5/4

2) get the common denominator. 4 is twice as much as 2. multiply 13/2 by 2/2

13/2 * 2/2 = 26/4

3) Subtract the top numbers and put over the same denominator

x = 26/4 - 5/4 = (26-5) / 4 = 21 / 4

4) simplify the fraction

x = 21/4 = 5 1/4 miles from library site to post office.

Answer:

Draw out a table of the factors.

54-1,2,3,6,9,18,27,54,

42-1, 2, 3, 6, 7, 14, 21, 42

After you write out your table then find the greatest common factor. Once you find the Greatest common factor that's going to tell you how many flowers left over.

Step-by-step explanation:

Using the greatest common factor, it is found that the greatest number of identical arrangements is 6 arrangements of 9 roses and 7 tulips.

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

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

54 - 42|2

27 - 21|3

9 - 7

Thus: gcf(54,42) = 6.

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[tex]\frac{54}{6} = 9, \frac{42}{6} = 7[/tex]

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