Find the value of the variable to the nearest tenth.

Answer:

x=1, y=2

Step-by-step explanation:

2x+y =4

y = 2x

Substitute the second equation into the first

2x+ (2x) = 4

Combine like terms

4x = 4

4x/4 = 4/4

x = 1

Now find y

y = 2x

y = 2(1)

y = 2

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% change = difference / original x 100

% change = (0.75 / 2.5) x 100

% change = 30%

It was a 30% change

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Answer:

They are 30% less

Step-by-step explanation:

2.5:100=0.75:x

Answer:

33

Step-by-step explanation:

Answer:

208

Step-by-step explanation:

one snake a week

52 weeks in a year

4 years

52*4=208

Answer:

For a general quadrilateral; in addition s=½(a+b+c+d). Right: a parallelogram. Often, however, it is easiest to compute the area by dividing the quadrilateral into triangles. One can also divide into triangles to compute one side given the other sides and angles, etc.

Step-by-step explanation:

Answer:

Area of a general Quadrilateral =12 × diagonal × (Sum of height of two triangle)

Answer:

Step-by-step explanation:

Sometimes  hope that helps you and hope you pass : >

Answer:

Always

Step-by-step explanation:

- Parallel lines can be defined as two lines in the same plane that are at equal distance from each other and never meet.

- Parallel lines are congruent and so their measure will ALWAYS be the same

Answer:

-194, -97, -48.5

Step-by-step explanation:

-3,104 ÷2 is -1,552. I divided each number by 2.

Answer:

a) Probability that a letter of the drawn ball is vowel = (3/10) = 0.30

b) Probability that a letter of the drawn ball is consonant = (7/10) = 0.70

a) Probabilidade de uma letra da bola sacada ser vogal = (3/10) = 0.30

b) Probabilidade de uma letra da bola sacada ser consoante = (7/10) = 0,70

Step-by-step explanation:

English Translation

A ballot box contains 10 balls identified by the letters A, B, ..., J. A ball is drawn at random from the ballot box and its letter is observed. (Make the sample space and all events explicit). What is the probability that a letter of the drawn ball is: a) Vowel b) Consonant

Solution

The 10 balls are identified by A, B, C, D, E, F, G, H, I and J

Note that the probability of an event is given as the number of elements in that event divided by the number of elements in the sample space.

a) Probability of drawing a ball that has a vowel letter = P(v)

P(v) = n(v) ÷ n(S)

n(v) = Number of balls with vowel letters = 3 (that is, A, E and I)

n(S) = Total number of balls = 10

P(v) = (3/10) = 0.30

b) Probability of drawing a ball that has a consonant letter = P(c)

P(c) = n(c) ÷ n(S)

n(c) = Number of balls with consonant letters = 7 (that is, B, C, D, F, G, H and J)

n(S) = Total number of balls = 10

P(c) = (7/10) = 0.70

In Portugese/Em português

As 10 bolas são identificadas por A, B, C, D, E, F, G, H, I e J.

Observe que a probabilidade de um evento é fornecida como o número de elementos nesse evento dividido pelo número de elementos no espaço de amostra.

a) Probabilidade de desenhar uma bola com uma letra de vogal = P (v)

P (v) = n (v) ÷ n (S)

n (v) = Número de bolas com letras de vogal = 3 (ou seja, A, E e I)

n (S) = Número total de bolas = 10

P (v) = (3/10) = 0,30

b) Probabilidade de desenhar uma bola com uma letra consoante = P (c)

P (c) = n (c) ÷ n (S)

n (c) = Número de bolas com letras consoantes = 7 (ou seja, B, C, D, F, G, H e J)

n (S) = Número total de bolas = 10

P (c) = (7/10) = 0,70

Hope this Helps!!!!

Espero que isto ajude!!!!

Answer:

The correct answer is option

[tex]d.\ x=-i, i, 3 \sqrt{5}\ or\ -3 \sqrt{5}[/tex]

Step-by-step explanation:

The given equation has a degree 4  (Highest power of [tex]x[/tex]):

[tex]x^4-44x^2-45=0[/tex] is the given equation which can be written as:

[tex](x^2)^2-44x^2-45=0 ...... (1)[/tex]

Let [tex]t=x^{2}[/tex] and putting it in equation (1):

[tex]t^2-44t-45=0 \\[/tex]

Solving the above quadratic equation in variable [tex]t[/tex]:

[tex]\Rightarrow t^2-45t+t-45=0 \\\Rightarrow t(t-45)+1(t-45)=0\\\Rightarrow (t+1)(t-45)=0\\\Rightarrow t =-1\ or\ 45[/tex]

We know that [tex]t=x^{2}[/tex]

So, [tex]x^{2} =-1\ or\ x^{2}= 45[/tex]

1. Solving [tex]x^{2} =-1[/tex]

[tex]\Rightarrow x = +\sqrt{-1}\ or\ -\sqrt{-1}\\\Rightarrow x = i\ or\ -i[/tex]

2. Solving [tex]x^{2} =45[/tex]

[tex]\Rightarrow x = +\sqrt{45}\ or\ -\sqrt{45}\\\Rightarrow x = 3\sqrt{5}\ or\ -3\sqrt{5}[/tex]

Hence, correct answer is:

[tex]x=-i, i, 3 \sqrt{5}\ or\ -3 \sqrt{5}[/tex]

Answer:

D

Step-by-step explanation:

Edgenuity

Answer:

14 dollars in one day

35 dollars if he works five days a week

49 dollars if he works 7 days a week

Step-by-step explanation:

Answer:

$14.00

Step-by-step explanation:

$7.00 x 2= $14.00

:>

Answer:

16

Step-by-step explanation:

Answer:

Probably Dog.

Step-by-step explanation:

Since there is more dogs than anything else, it would probably be a dog.

Answer:

Total pets  available

20 pets

Cat  0.2 --> 20%

Dog  0. 35  --> 35%

Snake   0.05 --> 5%

Rabbit  0.15 --> 15%

Bird 0.25--> 25%

Step-by-step explanation:

Total pets are:

cats + dogs + snakes + rabbits + birds

4 + 7 + 1 + 3 + 5 = 20 pets available for adoption

To find probability dived the number available of each  pet by the total number of pets available.

Cat

4/20 = 0.2 --> 20%

Dog

7/20 = 0. 35  --> 35%

Snake

1/20 =  0.05 --> 5%

Rabbit

3/5 = 0.15 --> 15%

Bird

5/20 =0.25--> 25%

Answer:

4 pack priced at £2.04 is the better pack

Step-by-step explanation:

2.04/4=£0.51 per roll

4.68/9=£0.52 per roll

I think the 9pack is better

I hope it was helpful to you

Answer:

A=94

Step-by-step explanation:

Length: 5

Width: 4

Height: 3

Shape: Rectangle prism

Solved for surface area

Formula: A=2(wl+hl+hw)

Formula: L*W*H

Answer: A=94

Hope this helps.

Answer:

The answer is 15

Step-by-step explanation:

could be 15 but (three times) is geting me off

sorry if i was no help and all the number's wow

Answer: x=12.49

10^2 + x^2= 16^2

100 + x^2= 256

x^2=156

x=12.49

Step-by-step explanation:

Step 1:  Use Pythagorean Theorem

[tex]a^2 + b^2 = c^2[/tex]

[tex]10^2 + b^2 = 16^2[/tex]

[tex]100 + b^2 = 256[/tex]

[tex]100-100 + b^2 = 256-100[/tex]

[tex]b^2 = 156[/tex]

[tex]\sqrt{b^2}=\sqrt{156}[/tex]

[tex]b = 12.48999599679679641169378624188[/tex]

[tex]b = 12.49[/tex]

Answer: [tex]12.49[/tex]

Answer:

2880 m

Step-by-step explanation:

find the area under the graph. i have split it into 3 areas A, B and C

A (trapezium) = 1/2 x (150 + 160) x 15 = 2325

B (trapezium) = 1/2 x (15 + 6 ) x (160 - 110) = 525

C (triangle) = 1/2 x 10 x 6 = 30

total = 2325 + 525 + 30 = 2880

This question is incomplete.

Complete question

This composite figure is made of two identical pyramids attached at their bases. Each pyramid has a height of 2 units.

2 identical pyramids with rectangular bases are connected at their base. The height of the pyramid is 2. The lengths of the sides of the rectangle are 5 and 0.25 units.

Which expression represents the volume, in cubic units, of the composite figure?

Answer:

2(1/3(5)(0.25)(2))

Step-by-step explanation:

The volume of a rectangular pyramid is given as

1/3 × (Area of the base rectangle ) × Height

Area of the base rectangle = Length × Width

We are told in the question that:

The lengths of the sides of the rectangle are 5 and 0.25 units.

Area of the base rectangle = 5 units × 0.25 units

The height of the pyramid = 2 units

Therefore, the volume of the rectangular pyramid = 1/3× (5×0.25) × 2

We are also told in the question that this composite figure is made of two identical pyramids attached at their bases.

Therefore, expression that represents the volume, in cubic units, of the composite figure is given as:

2(1/3× (5×0.25) × 2) = 2(1/3(5)(0.25)(2))

Answer:

Sharing cone holds 9 times more popcorn than a skinny cone.

Step-by-step explanation:

Height of each cone = 9 inches

Radius of the sharing size cone = 3 times radius of the skinny size cone

Let the radius of skinny size cone = r

Then radius of the sharing size cone = 3r

Volume of the sharing size cone = [tex]\frac{1}{3}(\pi )(\text{Radius})^{2}(\text{Height})[/tex]

                                                     = [tex]\frac{1}{3}(\pi )(3r)^{2}(9)[/tex]

                                                     = 27πr²

Volume of the skinny size cone = [tex]\frac{1}{3}(\pi )(\text{Radius})^{2}(\text{Height})[/tex]

                                                       = [tex]\frac{1}{3}(\pi )(r)^{2}(9)[/tex]

                                                       = 3πr²

Ratio of the volumes = [tex]\frac{\text{Volume of sharing size cone}}{\text{Volume of skinny size cone}}[/tex]

                                   = [tex]\frac{27\pi r^{2}}{3\pi r^{2} }[/tex]

                                   = 9

Therefore, sharing cone holds 9 times more popcorn than a skinny cone.

Answer:

Step-by-step explanation:

Ray HK is an angle bisector, which means that it cuts the angle exactly in half.  So half of GHI is 60.  If GHK is 3x + 48, and that is half of angle GHI. then

3x + 48 = 60 and

3x = 12 so

x = 4

Answer:

tanA = 12/5

Step-by-step explanation:

Step-by-step explanation:

Could you please type your question in English

Please!! I'm having a hard time understanding your question and I want to help

Answer:

-4a^4b^2

Step-by-step explanation:

-4a^7b^6/a^3b^4

-4a^4b^6/b^4

-4a^4b^2

Answer:

The values are k = -2 and c = 1

Step-by-step explanation:

Since it's a division of polynomials we can calculate "c" and "k" by using the inverse operation, which is the product. We need to multiply "x + k" with "3x + 1" and sum it with 3, that should be equal to "3x² - 5x + c". We have:

[tex]3x^2 - 5x + c = (x + k)*(3x + 1) + 3\\3x^2 - 5x + c = 3x^2 + x + 3kx + k + 3\\3x^2 - 5x + c = 3x^2 + (1 + 3k)x + (k+3)[/tex]

In order for two polynomials to be equal, every coefficient must be equal, therefore:

[tex]-5 = 1 + 3k\\1 + 3k = -5\\3k = -5 -1\\3k = -6\\k = -2[/tex]

[tex]c = k + 3\\c = -2 + 3\\c = 1[/tex]

Answer:

As shown in picture:

A(-4, 1)

Z(-2, 3)

P(3, -4)

The length of AZ is calculated by:  

L = sqrt((-4 - -2)^2 + (1 - 3)^2) = 2.83

The length of AP is calculated by:

L = sqrt((3 - -4)^2 + (-4 - 1)^2) = 8.60

THe length of ZP is calculated by:

L = sqrt((3 - -2)^2 + (-4 - 3)^2) = 8.60

=>Perimeter of triangle AZP is calculated by:

P = AZ + AP + ZP = 2.83 + 8.60 + 8.60 = 20.3

Hope this helps!

:)

Answer:

a. 264.5

b.40.375

c.0.1

d.0.8

e.7656

f.500

Step-by-step explanation:

a. [tex]\frac{115}{100}*230=\frac{26450}{100}=264.5[/tex]

b.[tex]\frac{80*4+3/4}{100}*50=\frac{323/4}{100}*50=\frac{323/4*50}{100}=\frac{4037.5}{100}=40.375[/tex]

c.[tex]\frac{500}{100}*0.02=5*0.02=0.1[/tex]

d.[tex]\frac{1/10}{100}*800=1/10*1/100 *800=\frac{1}{1000}*800=\frac{800}{1000}=0.8[/tex]

e.[tex]\frac{63*5+4/5}{100}*12000=\frac{319/5}{100}=12000=319/5*1/100*12000=319/500*12000=\frac{319*12000}{500}= \frac{3828000}{500}=7656[/tex]

f.[tex]\frac{0.05}{100}*1000000=\frac{0.05*1000000}{100}= \frac{50000}{100}=500[/tex]

Answer:

The radius of the water bottle is 2.25 cm

Step-by-step explanation:

The water bottle is said to be cylindrical, so its volume can be expressed as the volume of a cylinder.

Volume of a cylinder V = πr^2 h

Where;

h = height

r = radius

Making the radius the subject of formula;

r^2 = V/πh

r = √(V/πh)

Given:

Volume V = 121 cm^3

height h = 7.6 cm

π = 3.14

Substituting the given values;

r = √(121/(3.14×7.6))

r = 2.25 cm

The radius of the water bottle is 2.25 cm

Answer:

y = -x-2

Step-by-step explanation:

We are given a slope of -1 and the y intercept of -2

The slope intercept form of the equation for a line is

y = mx+b

where m is the slope and b is the y intercept

y = -1x +-2

y = -x-2

Answer:

y=-x -2

Step-by-step explanation:

Slope-intercept form is

y=mx+b

where m is the slope and b is the y-intercept

We know that the slope is -1. We also know that the y-intercept is (0, -2). For this form, we can disregard the 0, and say the y intercept is just -2.

So, m is -1, and b is -2. Substitute the values into the equation.

y=mx+b

y=-1x+-2

Simplify

y= -x -2

This is the equation of the line in slope-intercept form.

Answer:

1.5

Step-by-step explanation:

Answer:

in triangle

tan60°=3/x

√3=3/x

x=(√3×√3)/√3=√3

Answer:

  18.8 m²

Step-by-step explanation:

The area of a sector is given by the formula ...

  A = (1/2)r²θ . . . . . . . r is radius, θ is the central angle in radians

To convert an angle in degrees to one in radians, multiply by π/180°.

Your 135° sector has an area of ...

  A = (1/2)(4 m)²(135°)(π/180°) = 6π m²

  A ≈ 18.8 m²

Step-by-step explanation:

sorry what is the question?