Mathematics College

Solve using a proportion . 5) If it costs $2.85 for 5 cookies, how much would 8 cookies cost?

Answers

Answer 1

Answer:

$4.56

Step-by-step explanation:

2.85:5

multiply each side by 8/5

4.56:8

so it is $4.56 for 8 cookies

Related Questions

Pls help mark barinlist

Answers

Answer:

okay sure Barnyst comingup

Step-by-step explanation:

the figure below is made of unit cubes

Answers

Answer:

Ok cool can i see the figure?

Find the X and Y
Help ASAP please!!!

Answers

The answer is X=23 and y=9

The midpoint of a segment is 19,5) and one of the endpoints is (13,81 What are the coordinates of the otherendpoint

Answers

Answer:

[tex](25,-71)[/tex]

Step-by-step explanation:

Given

[tex](x,y) = (19,5)[/tex] --- midpoint

[tex](x_1,y_1) = (13,81)[/tex] --- end 1

Required

The other endpoint

Using midpoint formula, we have:

[tex](x,y) = 0.5 * [x_1 + x_2, y_1 + y_2][/tex]

So, we have:

[tex](19,5) = 0.5 * [13 + x_2, 81 + y_2][/tex]

Multiply both sides by 2

[tex]2 * (19,5) = 2 * 0.5 * [13 + x_2, 81 + y_2][/tex]

[tex](38,10) = [13 + x_2, 81 + y_2][/tex]

By comparison:

[tex]x_2 + 13 = 38[/tex] and [tex]y_2 + 81 = 10[/tex]

So:

[tex]x_2 = 38 - 13[/tex]

[tex]x_2 = 25[/tex]

and

[tex]y_2 = 10 - 81[/tex]

[tex]y_2 = - 71[/tex]

Henc, the other endpoint is:

[tex](25,-71)[/tex]

1. Explain why it makes sense to call the following expression a “perfect
square." *
x2 + 20x + 100

Answers

Answer:

because all sides are equal

The expression is a perfect square of (x+10)².

What is perfect square?

A perfect square is a number that can be expressed as the product of an integer by itself or as the second exponent of an integer.

For example, 25 is a perfect square because it is the product of integer 5 by itself, 5 × 5 = 25.

Given that the expression, x² + 20x + 100,

So, writing the expression as expanded form,

x·x + 2·10·x + 10·10

x² + 2·10·x + 10²

We see it is in the form of a² + 2ab + b²,

We know that, a² + 2ab + b² = (a+b)²

So,

x² + 2·10·x + 10² = (x+10)²

Hence the expression is a perfect square of (x+10)².

Learn more about perfect square click;

https://brainly.com/question/29056294

#SPJ2

does anyone know this

Answers

Answer: 761 yd

split the figure into different pieces to make it easier

(23 x 7) + (40 x 15)

161 + 600

761

hope this helped :)

Answer:

761 yd ^3

Step-by-step explanation:

On a tree, the trunk splits into 5 branches. Then each branch splits into 5 smaller branches, and each of those branches splits into 5 very thin branches. How many very thin branches are on the tree?
I need how many very thin in normal form and in EXPONENT form

Answers

Answer:

it is 5 to the 3rd power or 125. We start with 5 branches that slit into 5 more so 5x5=25 then they split into 5 more so 25x5= 125

can someone help me

Answers

Answer:

Step-by-step explanation:

The base is 4 and the length is 8 b x l 8×4 =32

What is the measure of angel C?
Enter your answer as a decimal. Round only your final answer to the nearest hundredth.
m

Answers

Answer:

36.87

Step-by-step explanation:

We can use SOH CAH TOA (sine, cosine, and tangent) to solve this problem.

SOH- means Opposite over Hypotenuse

CAH- means Adjacent over Hypotenuse

TOA- mean Opposite over Adjacent

U can use either one of these to solve this problem, I will be using sine SOH (sine).

sine C = 3/5

sine ^-1 3 divided by 5 =36.8698

So, angle C = 36.8698 and rounded to the nearest hundred is 36.87

It takes 36 nails to make 4 chairs.
How many nails are needed to make 9 chairs?
A. 72
B. 81
O c. 144
O D. 162
O E. 324

Answers

Answer:

36/4=9 so each chair takes 9 nails so 9*9=81

B:81

Which test would we use to show a relationship between one population and two catergorical variables ?

Answers

Answer:

independence I think

Answer:

Arithmetic

 Arithmetic calculations

 * : Multiplication

 / : Division

 Integer division truncates remainder

7 / 5 evaluates to 1

 % : Modulus operator returns remainder

7 % 5 evaluates to 2

Identify the volume of a regular triangular pyramid with base edge length 14 ft and height 9 ft.

Answers

Answer:

The volume is 588 ft³

Step-by-step explanation:

[tex]v = a {}^{2} \frac{h}{3} = 14 {}^{2} \times \frac{9}{3} = 588[/tex]

Answer:

254.6 ft3 F

Step-by-step explanation:

To find the volume of the pyramid, first calculate the area of the base.

As the pyramid is the regular triangular pyramid, the base is an equilateral triangle.

To find the area of the equilateral triangle, calculate the length of the height.

Since the triangle is equilateral, each angle in the triangle equals 60°.

The height forms a 30°- 60°- 90° triangle. One leg of this triangle is equal to half of the side of the large triangle, or 7 ft. The other leg of the triangle is equal to 73‾√ ft by the 30°- 60°- 90° Triangle Theorem.

Therefore, the length of the height of the triangle is 73‾√ ft.

To find the area of the base of the pyramid, B, use the formula for the area of a triangle, B=12bh.

Substitute 14 for b and 73‾√ for h.

B=12⋅14⋅73‾√

Simplify.

B=493‾√ ft2

To find the volume of the pyramid, use the formula for the volume of a pyramid, V=13Bh.

Substitute 493‾√ for B and 9 for h.

V=13⋅493‾√⋅9

Simplify.

V=1473‾√

Use a calculator to approximate.

V≈254.6 ft3

Therefore, the volume of the regular triangular pyramid is about 254.6 ft3.

need help guys givin brainliest

Answers

Answer:

Step-by-step explanation:

The scale factor from 3m to 9m is ×3

So do 12 / 3 = 4

The scale factor is 4.

Since the length of one side is 9 and 3 on the other triangle, you would divide those two.

9/3=3

Then, you would decide 12 by 3 to get your final answer.

12/3=4

what is 4x5 gc ft kg gn hi dj cm cjj kg you too te you tu

Answers

4*5=20

:)

Have a good day

A mountain climber started at 150 feet below sea level. What would he need to climb to so that his starting spot and his ending spot were opposites?

Answers

Answer:

Your answer is 24.333.

Step-by-step explanation:

..If you round this, it would be 24 or 24.3. you get this answer by doing 3650 divided by 150.

This shape has all identical faces and a surface area of 240 square meters. What is the area of each face?
A 120
B 80
C 60
D 30

Answers

Answer: C 60

Step-by-step explanation:

240 is the square meter, and if each face is the same, u divide 240 by 4 which equals 60

The Smith family is building a deck that is 200 square feet in area. What are the
possible lengths and widths the deck could have?

Answers

So any configuration the deck could be in
I am guessing in whole numbers but any and every number could work. so divide 200( which is gotten by length times width ) by numbers starting with one... to find the possible deck sizes...

1by200feet

2by100feet

4by50feet

5by40feet

8by25feet

10by20feet

Factor the quadratic expression completely.
-7x^2-24x-9

Answers

Answer:

(7x+3)(-x-3)

Step-by-step explanation:

-7x²-24x-9 would be the same thing as (7x+3)(-x-3) because 7x*-x=-7x², +3*-3=-9, and 7x*-3 - 3x = -24x

HELP PLEASE ILL GIVE BRAINLIEST

Answers

Answer:

The answer is H.) (A, B, C)

Step-by-step explanation:

3 is a whole number and a natural number and 4/3 is a rational number

Please Help POINTS: 15 (look at the screenshot below)

What is the ratio of the number of medals won by Jacob to the number of medals won by Antonio?

Answers

D: 2/1

EXPLANATION:
Jacob has 8

Antonio has 4.

8/4 is the ratio

8/4 can be simplified to 2/1

Hope this helps!

72 biscuits from 9 batches

Answers

Answer:

9 x 8 = 72 answer is 8

I’m begging for someone to help me with this so bad it about in order largest to small et) (NO LINKS) (NO LYING) IT MUST BE THa PART 2

Answers

Answer:

1) Yes

2) Yes

3) Yes

4) No

5) Yes

6) Yes

7) Yes

8) Yes

9) Yes

10) No

Step-by-step explanation:

The triangle inequality theorem states that the length of any 2 sides of a triangle must be greater than the third side of that same triangle.

1) By Inspection, 2 + 10 > 11.

Thus, this set can be lengths of the sides of a triangle

2) 7 + 9 > 10