The cost of 2 markers and 5 pencils is $3.25. The cost of 4 markers and 6 pencils is $5.50.
What is the cost of each item?

Answer:

He forgot to multiply 6x by -5

Step-by-step explanation:

8x + 5y = 18

6x + y = -2

-30x - 5y = 10

Answer: C I think

Step-by-step explanation:

Answer:

This has one solution

Step-by-step explanation:

5x+8-7x=-4x+1

Combine like terms

-2x+8 = -4x+1

Add 4x to each side

-2x+4x+8 = -4x+4x+1

2x+8 = 1

Subtract 8 from each side

2x+8-8=1-8

2x = -7

Divide by 2

2x/2 = -7/2

x = -7/2

Answer:

One solution

Step-by-step explanation:

did it on khan:)

Answer:green area- triangle area = 72-9 = 63

Step-by-step explanation:

Answer:3.5 and -3.5

Step-by-step explanation:

Because of the absolute value marks a negative will become positive. So 3.5 and |-3.5| are equal to 3.5

Answer: 23.8

Step-by-step explanation:

Since sine= opp/hyp we can use the given info to establish

sin39=15/x

x=23.8

Answer:

d) x≈23.8

Step-by-step explanation:

sin 39 = 15/x multiply by x each side

x sin 39 = 15 divide by sin39

x = 15/sin 39

x = 23.84

x≈23.8

Answer:

Step-by-step explanation:

32.5 is 1/10 of blank

Is means =. Of means multiply. So, 32.5=1/10*X

Answer:

32.5 is [tex]\frac{1}{10}[/tex] of 325

Step-by-step explanation:

325 ÷ 10 = 32.5

Answer:

minutes

Step-by-step explanation:

Answer:

3 + 5 +4 = 12

3/12

= 1/4

Step-by-step explanation:

1. add the marbles together

2. divide the number of marbles drawn out by the total number of marbles.

Answer:

A

Step-by-step explanation:

As they have the same slope they should be parallel so a is the answer

Answer:

Graph D (-1, -2)

Step-by-step explanation:

I graphed the two equations using a graphing tool.

When graphed, they pass at the point (-1,-2).

(-1, -2) is the solution.

It looks like that graph D has the lines passing at the same point.

Option D should be the correct answer.

Answer:

i think its c

Step-by-step explanation:

Answer:

The answer is C. 5a² - 4a + 1

First you want to Distribute the Negative Sign:

= 10a² + 3 − 5a + −1 (2 + 5a² − a)

= 10a² + 3 + −5a + (−1) (2) + −1 (5a²) + −1 (−a)

= 10a² + 3 + −5a + −2 + −5a² + a

Add Like Terms:

= 10a² + 3 + −5a + −2 + −5a² + a

= (10a² + −5a²) + (−5a + a )+( 3+ −2)

= 5a² + −4a + 1

Answer:

number of red tags = 200 - 70 - 38 = 92

Step-by-step explanation:

Jordan has a total of 200 name tag and the tags have different varieties of colors. The tags have blue, yellow and red color . Let us find the number of blue  tags

number of blue tags = 35% of 200

number of blue tags = 35/100 × 200

number of blue tags = 70

The number of yellow tags = 38

The remaining number of tags are red color. Therefore the number of red tag will be the total number of tag minus the number of blue tags and the number of yellow tags.

number of red tags = 200 - 70 - 38 = 92

Answer:

24 centimetre

hope it is helpful

Answer:

8 and -4

6 and -2

5 and -1

Step-by-step explanation: for example 6 and -2. If you add negative 2 and a positive 6  they will equal 4.  

Answer:

Cost of the tires in 2008 = 23333 dollars

Step-by-step explanation:

Number of snow tires purchased are represented by,

T = [tex]\frac{500(t+20)}{(t+75)}[/tex]

Where t = duration from year 2000

Similarly, cost of the tires area represented by,

C = [tex]\frac{t+75}{1-.05t}[/tex]

Therefore, cost of T tires = C × T

= [tex]\frac{t+75}{1-.05t}[/tex] × [tex]\frac{500(t+20)}{(t+75)}[/tex]

= [tex]\frac{500(t+20)}{1-0.05t}[/tex]

Now cost of the tires in year 2008 (t = 8 years)

Total cost = [tex]\frac{500(8+20)}{(1-0.05\times 8)}[/tex]

                 = [tex]\frac{14000}{0.6}[/tex]            

                 = $23333.3

                 ≈ 23333 dollars

Answer:

There are 24 ways to select one book of each type.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

[tex]{n\choose k}=\frac{n!}{k!(n-k)!}[/tex]

It is provided that there are 6 different biographies and 4 different mystery novels on a bookshelf.

Compute the number of ways to select a biography as follows:

Number of ways to select a biography =

[tex]={6\choose 1}\\\\=\frac{6!}{1!(6-1)!}\\\\=\frac{6\times 5!}{1\times 5!}\\\\=6[/tex]

There are 6 ways to select a biography.

Compute the number of ways to select a mystery novel as follows:

Number of ways to select a mystery novel =

[tex]={4\choose 1}\\\\=\frac{4!}{1!(4-1)!}\\\\=\frac{4\times 3!}{1\times 3!}\\\\=4[/tex]

There are 4 ways to select a mystery novel.

Then the total number of way to select one book of each type is:

[tex]{6\choose 1}\times {4\choose 1}=6\times 4=24[/tex]

Thus, there are 24 ways to select one book of each type.

Answer:

15 apples in total

Step-by-step explanation:

Answer:

38 kg

above is the answer

Answer:

C.)  The ball was thrown from a height of 3 feet

Step-by-step explanation:

In the standard form of a quadratic function, f(x) = ax² + bx + c,

c is the constant term (also known as the y-intercept of the parabola)

In this situation, the ball is thrown up into the air and the flight path will be in the shape of a parabola

The equation y = -16t² + 40t + 3 has a y-intercept of 3, meaning the flight path began at 3 feet above the ground, as you can imagine by looking at the graph of the equation, below.  The y-intercept is at (0,3)

Answer:

y-4=1/5(x-7)

Step-by-step explanation:

First, you need to find the slope of the line. From the point (2,3) to the point (7,4), the line rises 1 unit while moving sideways 5. Therefore, the slope of the line is 1/5. Hence, the equation of the line is y-4=1/5(x-7). Hope this helps!

Step-by-step explanation: For edge2020 it is C graph.

try 22

Step-by-step explanation: Maybe it could work, hope it. helps,

Khan?

Answer:

4075 squares centimeters

Step-by-step explanation:

V=4/3pi(r^3)

V=4/3pi(9^3)

V=3,054 inches^3

This question is not complete because it lacks the diagram of the Rectangular prism.

Answer:

Attached to this diagram is the necessary diagram

• A cross section parallel to the base is a rectangle measuring 15 inches by 8 inches.

• A cross section perpendicular to the base through the midpoints of the 8-inch sides is a rectangle measuring 6 inches by 15 inches.

• A cross section not parallel to the base that passes through opposite 6-inch edges is a rectangle measuring 6 inches by greater than 15 inches.

Step-by-step explanation:

A right rectangular prism is a prism that is 3 dimensional in shape and it has 6 rectangular faces.

From the attached diagram, we can see that their is a cross section that is parallel to the base, it has breadth of 8 inches and breathe of 15inches, therefore the option

"• A cross section parallel to the base is a rectangle measuring 15 inches by 8 inches." is correct.

Secondly, when we look at the diagram and check the midpoints thought the 8 inches sides , the cross section perpendicular to the base is a rectangle that has a length of 6 inches and a breadth of 15 inches . Therefore the option

"• A cross section perpendicular to the base through the midpoints of the 8-inch sides is a rectangle measuring 6 inches by 15 inches." Is correct

Thirdly, by observing the attached diaiagram,

• A cross section not parallel to the base that passes through opposite 6-inch edges is a rectangle measuring 6 inches by greater than 15 inches is correct.

Answer:

option 2 is not right angle triangles

Answer:

Option 3 is actually not a right triangle

Hope this helps :)

(Option 3 is an acute scalene triangle, the others are all right scalene)

Answer:

10

Step-by-step explanation:

Subtract -4 from 6

6 - -4

Subtracting a negative is like adding

6 +4

10

Answer:

-10

Step-by-step explanation:

If you subtract 6-(-4) it gives you -10

Hope this helps

Answer:

∠1 = 117°, ∠2 = 63°

Step-by-step explanation:

∠1 = 117° , and ∠2 = 63° because 117° is supplementary to 63°

Answer:

The point M(Mx, My) is mid-point of GH with G(Gx, Gy) and H(Hx, Hy).

=> 2*Mx = Gx + Hx => 2*4 = -2 + Hx => Hx = 10

=> 2*My = Gy + Hy => 2*(-3) = 2 + Hy => Hy = -8

=> H(10, -8)

Hope this helps!

:)

The coordinate of the point H is (10, -8) if the midpoint, M, of segment GH is M(4, -3). Endpoint G has the coordinates G(-2, 2).

A segment bisector is a line, ray, line segment, or point that divides a line segment into two equal halves at its center.

It is given that:

The midpoint, M, of segment GH is M(4, -3). Endpoint G has the coordinates G(-2, 2).

Let (x, y) be the coordinates of endpoint H

H(x, y)

(x - 2)/2 = 4

x - 2 = 8

x = 8 + 2

x = 10

(y + 2)/2 = -3

y + 2 = -6

y = -8

Thus, the coordinate of the point H is (10, -8) if the midpoint, M, of segment GH is M(4, -3). Endpoint G has the coordinates G(-2, 2).

Learn more about the segment bisector here:

brainly.com/question/4137998

#SPJ2

Answer:

-679

Step-by-step explanation:

14 + (78 - 1) × -9

= 14 + (77)-9

= 14 - 693

= -689

Answer:

y = x + 4

Step-by-step explanation:

I have attached the work to your problem below.

Please see the attachment.

I hope this helps.

Answer:

y = x + 4

Step-by-step explanation:

I took the lesson and got it correct