Alexis has a stamp collection of 3 cent stamps and 8 cent stamps. She has 1 less 8 cent stamps as 3 cent stamps. If the collection has a face value of 69 cents, how many of each does she have?

She has ____ 3 cent stamps and _____ 8 cent stamps.

Answer:

2.222222222222222222222222222222222222222222222222222222kg

or 2.2kg rounded :)

Step-by-step explanation:

10/4.50 = 2.2222222222222222222222222222222222222222222222222

so if you multiply both sides by 2.22222 you get (4.50 *2.222222 = 10)(kg*2.222222 = 2.222222222kg)

Answer:

The correct option is A) Q and W are similar but not congruent.

Step-by-step explanation:

Consider the provided graph.

Figure Q is a quadrilateral with sides measuring 5 and 2

Figure S is a quadrilateral with sides measuring 5 and 2.

Figure W is a quadrilateral with sides measuring 10 and 4.

Two figures are similar if the shape of the figures are same but not necessarily same size.

Two figures are congruent if the size and shape of the figure are same.

Note: If two figures are congruent, then they are also similar, but converse is not true.

The dimensions of Q is equals to the corresponding dimensions of the rectangle S. Thus, Q and S are similar and congruent as they have the same shape and the same size.

The dimension of quadrilateral W is 2 times of quadrilateral Q and S. Thus the dimensions of W is proportional to dimensions of Q.

That means quadrilateral W is similar to Q and S but not congruent.

Thus, the correct option is A) Q and W are similar but not congruent.

Answer:

I prefer to express solutions to inequalities using interval notation. Both formats are are important but I think interval notation is easier to understand and represents better the solutions.

For example, if you have the following inequation:

x-2> 1

x>3

Therefore, the solution could be written either x>3 OR (3, +inf). But what happens if the solution to the system of equation is x>3 or x<-3? The solution can be easily written as: (-inf, -3) U  (3, inf) instead of 'x>3 or x<-3' which is more confusing.

Answer:

0.5

Step-by-step explanation:

Sort the given data in ascending order:

47, 48, 50, 52, 53, 53, 55, 68

Possible outlier is number 68. Check whether this number is an outlier:

[tex]Q_1=49\\ \\Q_2=52.5 \\ \\Q_3=54[/tex]

The interquartile range is

[tex]Q_3-Q_1=54-49=5[/tex]

Multiply it by 1.5:

[tex]1.5\cdot 5=7.5[/tex]

and add to third quartile:

[tex]7.5+54=61.5[/tex]

Since [tex]68>61.5,[/tex] number 68 is an outlier.

The median of the sample with outlier is [tex]Q_2=\dfrac{52+53}{2}=52.5[/tex]

The median of the sample without outlier is 52

The difference between the median of the data, including the possible outlier and excluding the possible outlier is 52.5-52=0.5

Answer:

0.5

Step-by-step explanation:

i finished the assignment and it was right so yeah it’s 0.5

Answer:

60(1/5)^(n-1).

Step-by-step explanation:

The common ratio  r   is 12/60 = 12/5 / 12  = 12/25 / 12/5 = 1/5.

The first term a1 = 60 so the explicit rule is

a1 * r^(n-1)

= 60(1/5)^(n-1).

aₙ=60(1/5)ⁿ⁻¹ is the explicit rule for the geometric sequence 60,12,12/5, 12/25,12/125,... .This can be obtained by using the formula of geometric sequence.

Sequence is s collection of objects in a particular order and repetitions are allowed.

Geometric Sequence:

In the given question, first term a=60

Common ratio r = a₂/a₁ = 12/60 = 1/5 ⇒ r = 1/5

By definition, arⁿ⁻¹ = (60)(1/5)ⁿ⁻¹ is the required explicit rule for the geometric sequence.

Hence aₙ=60(1/5)ⁿ⁻¹ is the explicit rule for the geometric sequence 60,12,12/5, 12/25,12/125,... .

Learn more about geometric sequence here:

brainly.com/question/2959141

#SPJ2

ANSWER

B. (5.75, 0)

EXPLANATION

If the point P(x,y) partitioned

[tex]A(x_1,y_1)[/tex]

and

[tex]B(x_2,y_2)[/tex]

in the ratio m:n, then

[tex]x = \frac{mx_2+nx_1}{m + n} [/tex]

[tex]y=\frac{my_2+ny_1}{m + n} [/tex]

If the coordinates are A(−4,12) and B(9,−4), then:

[tex]x = \frac{6 \times 9+2 \times - 4}{6 + 2} [/tex]

[tex]x = \frac{54 - 8}{8} [/tex]

[tex]x = \frac{46}{8} [/tex]

[tex]x = 5.75[/tex]

[tex]y= \frac{6 \times - 4+2 \times 12}{6 + 2} [/tex]

[tex]y = \frac{24 - 24}{8} [/tex]

[tex]y = \frac{0}{24} = 0[/tex]

The correct choice is

[tex]B. (5.75, 0) [/tex]

Answer:

height of prism = [tex]x+1-\frac{4}{x^3+3x^2+8}[/tex]

Step-by-step explanation:

Volume of rectangular prism = (x^4+4x^3+3x^2+8x+4)

Area of its bases = (x^3+ 3x^2+8)

Height of prism = ?

Volume of rectangular Prism = Area of its bases * Height of prism

(x^4+4x^3+3x^2+8x+4) = (x^3+ 3x^2+8) * height of prism

=> height of prism = (x^4+4x^3+3x^2+8x+4) /(x^3+ 3x^2+8)

=> height of prism = [tex]x+1-\frac{4}{x^3+3x^2+8}[/tex]

The division of  (x^4+4x^3+3x^2+8x+4) /(x^3+ 3x^2+8) is shown in the attached figure.

Answer:

Step-by-step explanation:

I'm going to assume that you meant to write: The square of a number exceeds that number by 12. What are the two possible solutions.

In other words x² = x + 12

4² is 16.

4 + 12 = 16

(-3)² is 9

-3 + 12 = 9

Hope this helped!

~Just a girl in love with Shawn Mendes

Step-by-step explanation:

C. SAS the sides and angles are similar in both hence they are similar

F. SSS all sides equal

Answer:

SSS, SAS, LL, HL

Step-by-step explanation: because I got it incorrect by the last guy who tried to answer and I found out the hard way.. good luck everyone

variable costs, rates, marketing and budgeting are completely dependant on linear graphs it can be used to display a steady flow of something, or even and increase of a specific subject over time. if you were a market manager or banker, you'd probably deal with them.

Answer:

Step-by-step explanation:

This is a question that uses the Pythagorean Theorem.

a = 35 feet

b = x            which is the height of the tree.

c = 3*x + 1   so we are trying to find x.  Substitute into a b and c

a^2 + b^2 = c^2

35^2 + x^2 = (3x + 1)^2        

35^2 + x^2 = 9x^2 + 6x + 1     Subtract x^2 from both sides.

35^2 = 8x^2 + 6x + 1               Subtract 35^2 from both sides.

0 = 8x^2 + 6x + 1 - 35^2

0 = 8x^2 + 6x - 1224

Does this factor?

(x + 12.75)(x - 12)

x - 12 = 0 is the only value that works.

x = 12

The tree is 12 feet high.

Note: I used the quadratic formula to solve this.

Answer:

12 ft

Step-by-step explanation:

Let the height of the tree is h.

So the distance of top of the tree = 3 h + 1

Distance of base of tree = 35 ft

So, by use of Pythagoras theorem

[tex]\left ( 3h+1 \right )^{2}=h^{2}+35^{2}[/tex]

[tex]8h^{2}+6h-1224=0[/tex]

[tex]4h^{2}+3h-612=0[/tex]

[tex]h=\frac{-3\pm \sqrt{9+4\times 4\times 612}}{8}[/tex]

[tex]h=\frac{-3\pm 99}{8}[/tex]

Take positive sign

h = 12 ft

Thus, the height of tree is 12 ft.

Answer:

B. -20

Step-by-step explanation:

8/d = -12/30

We can use cross products to solve

8 * 30 = d* -12

240 = -12 d

Divide each side by -12

240/-12 = -12d/-12

-20 = d

Answer:

1/2

Step-by-step explanation:

The slope between two points is found by

m = (y2-y1)/(x2-x1)

   = (9-1)/(24-8)

   = 8/16

   = 1/2

Answer:

1/2.

Step-by-step explanation:

The slope = rise / run

= difference in y coordinates / corresponding differences in x coordinates

= (9 - 1) / (24 - 8)

= 8 / 16

= 1/2.

Answer:

Option C) 8 cups

Step-by-step explanation:

Let

x----> the number of cups

y ---> the number of plates

we know that

y=2x-4 -----> equation A

60%=60/100=0.60

y=0.60(x+y) ----> equation B

Substitute equation A in equation B and solve for x

2x-4=0.60(x+2x-4)

2x-4=0.6x+1.2x-2.4

2x-4=1.8x-2.4

2x-1.8x=4-2.4

0.2x=1.6

x=1.6/0.2

x= 8 cups

From looking at the question, the answer is C. 8

Answer:

Step-by-step explanation:

This is direct variation, and the pertinent equation is y = -2.5x, where -2.5 is the constant of variation.

Answer:

Step-by-step explanation:

[tex](g\circ f)(x)=g\bigg(f(x)\bigg)\\\\f(x)=2x+1,\ g(x)=x+14\\\\\text{Exchange}\ x\ \text{in}\ g(x)\ \text{to}\ (2x+1):\\\\(g\circ f)(x)=g\bigg(f(x)\bigg)=g(2x+1)=(2x+1)+14=2x+15[/tex]

Answer:

754 inches

Step-by-step explanation:

you have to convert the 62 feet into inches which will be 62*12=744. You then add 10 to it to get 754 as your answer.

Answer:

24

Step-by-step explanation:

hbdhdjjdjchchcbndndnxnndjdjdjdjjsjdhjdjxjxjjdjcncnncnfjfjdjdnndndnd

Answer:

No

Step-by-step explanation:

In a triangle, sum of any two sides is always grater than the third side.

Here,

[tex]3 + 2 = 5 \ngtr \: 5 \\ [/tex]

Hence, 3,2,5 can no tbe the lengths of a triangle

Answer:

False

Step-by-step explanation:

XY is the diameter of the circle with the centre of this circle being O.

But O on it's own is just a coordinate, and not the circle.

Answer:

False, XY is not a diameter

Step-by-step explanation:

To be a diameter, it must go through the center of the circle, which is point O

The chord XY does not pass through the point O, so XY cannot be a diameter

Answer:

two real roots

Step-by-step explanation:

x^2 + 7x – 6 = 0

We can use the discriminant

This is in the form ax^2 +bx+c=0

b^2 -4ac

If  b^2 -4ac> 0 there are 2 real roots

If b^2 -4ac = 0 there is one real root

If b^2 -4ac <0 there are two complex roots

7^2 -4(1)*(-6)

49 +24

73

Since 73 > 0 there are two real roots

Answer:

The graph of the equation intersects the x-axis at two points. Therefore, it has two solutions.

Step-by-step explanation:

Answer:

Y=-4x-5

Step-by-step explanation:

-21=-4(4)+b

-21=-16+b

b=-5

y=-4x-5

Answer:

y = - 4x - 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 4x + 5 is in this form with slope m = - 4

• Parallel lines have equal slopes, hence

y = - 4x + c ← is the partial equation of the parallel line

To find c substitute (4, - 21) into the partial equation

- 21 = - 16 + c ⇒ c = - 21 + 16 = - 5

y = - 4x - 5 ← equation of parallel line

Answer:

Shorter sides: 270 feet.

Larger side: 540 feet.

Greatest possible area: 145800 square feet.

Step-by-step explanation:

So we need fencing around the garden except along the river.

The opposite sides of a rectangular are congruent.

So the sides perpendicular to the river in the picture are both of the same length, let's call it x.  The length opposite the river is y.  

So the perimeter excluding the side along the river is

x+x+y or 2x+y or 1080 is how much fencing we want.

So we have the equation:

2x+y=1080

The area of rectangle can be found by multiplying it's dimensions:

xy=A

We want to find the dimensions that provide us with the maximum area.

This is our area function so for:

A=xy

We need the area to be in terms of one variable.

Let's use our condition that 2x+y=1080.

2x+y=1080

Subtract 2x on both sides:

y=1080-2x

or

y=-2x+1080

We are going to plug this into:

[tex]A=xy[/tex]

[tex]A=x(-2x+1080)[/tex]   :  I replaced y with -2x+1080 since y=-2x+1080.

[tex]A=-2x^2+1080x[/tex] :  I distribute.

Let's find the x-coordinate of the vertex.

To do this we need to determine [tex]a[/tex] and [tex]b[/tex] in the comparison of

[tex]A=ax^2+bx+c[/tex].

[tex]a=-2[/tex]

[tex]b=1080[/tex]

[tex]c=0[/tex]

The formula for the x-coordinate of the vertex is [tex]\frac{-b}{2a}[/tex].

[tex]\frac{-b}{2a}=\frac{-1080}{2(-2)}=\frac{1080}{4}=270[/tex]

We could plug this into our area Area function in terms of to find maximum area.

We could also wait til later.  I think I will do both for a later check.

[tex]A=-2x^2+1080x[/tex] with [tex]x=270[/tex]

[tex]A=-2(270)^2+1080(270)[/tex]

[tex]A=145800[/tex]

So we one dimension of the rectangle so for which is 270 feet.

We have the maximum area which is 145800 square feet.

Now recall y=-2x+1080.

y=-2x+1080 with x=270

y=-2(270)+1080

y=540

So we have one dimension of the rectangle is 270 feet.

Another dimension is 540 feet.

And the area of the rectangle is 145800 square feet.

Does 270(540) equal 145800? 270(540)=145800 so yes.

Let's check to see if we have 1080 feet of fencing.

So we have 2 small sides of 270 and 270 feet.

We have a larger side which is 540 feet.

270+270+540=10180 so everything checks out.

Answer:

3.1x+2.8z

3.1 over 10x +14 over 15 z

1 over 10 x (3.1x + 2.8z)

4.3x - 1.2z =

43 over 10x - 6 over 5z

1 over 10 x (43x-12z)

Answer:−1.2x+4z

Step-by-step explanation:

Answer:

Step-by-step explanation:

The image is blurred.

The given frequency is showing only 4 intervals, that means there should be only 4 bars in the right histogram, that lead us only to the first or second choice as right answers.

Now, according to the frequency table the first interval is larger than the second interval and the third interval is larger than the fourth interval. This means the first bar must be taller than the second bar, and the third bar must be taller than the fourth bar, and the second histogram is showing this.

Therefore, the right histogram is the second one.

Answer:

19

Step-by-step explanation:

Hey diddle diddle the medians in the middle you add then divide for the mean. the mode is the one that appears the most and the range is the difference in between.

Median: you have to organize the numbers from least to greatest then eliminate one by one.

12, 15, 15, 18, 20, 29, 33, 42

eliminate 12, and 42

15, 15, 18, 20, 29, 33

eliminate 15, and 33 ... so on

once you get to the median you end up with two numbers.

18, 20

because you can only have one median you find the number between, which in this case would be 19

Answer:

19

Step-by-step explanation:

The median is the middle value of the data in ascending order. If there is no exact middle then it is the average of the two values either side of the middle.

Arrange in ascending order

12, 15, 15, 18, 20, 29, 33, 42

The middle is between 18 and 20

median = [tex]\frac{18+20}{2}[/tex] = [tex]\frac{38}{2}[/tex] = 19

Answer:

156.654

Step-by-step explanation:

162*.967=156.654

To multiply 162 by 0.967, use a calculator or perform the multiplication manually to get approximately 156.654.

The product of 162 and 0.967, you can multiply these two numbers together. When you multiply a whole number by a decimal, you're essentially combining that many groups of the decimal number. In this case, you are combining 162 groups of 0.967.

Here is the step-by-step calculation:

Write down the numbers: 162 and 0.967.

Multiply the whole number by the decimal: 162 * 0.967.

Use a calculator or long multiplication to find the product.

If you use a calculator, the answer you would get is approximately 156.654.

The expression 2a−4b+7c is a trinomial and a first-degree polynomial.

The expression 2a−4b+7c is a linear polynomial because each term has a variable (a, b, c) with an exponent of one.

It is also a first-degree polynomial since the highest power of any variable is 1.