About 29% of the Earth's surface is covered by land. The total surface area of the Earth is about 510 million square kilometers. What is the area of the Earth’s surface covered by land?

Answer:

Yes it is proportional (Equation: y=3.5x)

Step-by-step explanation:

Notice that there is a constant change in y and a constant change in x. But by how much? Given the last point (13,45.5) we can see that 13-12=1 and 45.5-42=3.5 so that means as x increases by 1, y always increases by 3.5, making the relationship proportional. You can also write the equation y=3.5x to show this

Answer:

i think it is y=4x+-3

Step-by-step explanation:

if it is correct plz plz mark me as brainliest

Answer:

0.8 or 0.80

Step-by-step explanation:

Answer:

f(x)=(x+3)^2+5

let f(x)=y

y=(x+3)^2+5

interchanging role of x and y

x=(y+3)²+5

x-5=(y+3)²

√(x-3)-3=y

y=√(x-3)-3

:.inverse of f(x)=(x+3)^2+5 is f-¹(x)=√(x-3)-3

Answer:

The answer is 65

Step-by-step explanation:

3-2 = 1

4^3 = 64

64+1 = 65

Hope this helps.

Answer:

[tex]65[/tex]

Step-by-step explanation:

Firstly, you have to Simplify what's inside the parentheses.

and that is 3-2 = 1.

[tex] {4}^{3} + 1[/tex]

Secondly, you have to Simplify 4³ to 64. 4 to the power of 3 is 64.

[tex]64 + 1[/tex]

And lastly, you have to simplify 64 + 1. which is.

[tex]65[/tex]

Therefor, the answer is, 65.

Answer:

So is there are 10 cats for every 4 dogs,

If there are 5 cats that is half of 10 so half of 4 is 2

Now there are 32 dogs that is 8 times more than 4 so 10 x 4 is 40 so the answers are

Cats    10     5     8

Dogs   4     2     32

Plz give brainiest

maybe xd ad something else please

Answer: They are all alike in how they change the price either increase or decrease it and difference is that some increase and some decrease.

Step-by-step explanation: Hope this was helpful :)

Answer:

m∠CFB   m∠CAB   m∠EAD  m ∠CAB + m∠EAD

45°              19.93°               70.07°                     90°

50°              29.91°              70.09°                    100°

60°              49.92°             70.08°                    120°

75°              79.92°             70.08°                    150°

m∠CFB  BF  CF     DF  EF  BF + DF  CF + EF   BF × DF    CF × EF

45°     2.69 2.74    9.09     8.91    11.78    11.65    24.45     24.41

50°      3.7 3.63   8.07     8.23    11.77    11.86    29.86     29.87

60°      5.35 4.72    6.42     7.28    11.77    12.00    34.35     34.36

75°     7.3   5    4.47     6.52    11.77    11.52    32.63     32.6

Step-by-step explanation:

edmentum

Answer:

PLATO

Step-by-step explanation:

Answer:

y=5

Step-by-step explanation:

x+3=2x+1

x=2

y=2+3

y=5

Answer:

no, no, yes, no

Step-by-step explanation:

3x + 7y = 17

1. 3(5) + 7(3) = 17 ---> 15 + 21 = 17 (false)

2. 3(-8) + 7(-2) = 17 ---> -27 + -14 = 17 (false)

3. 3(-6) + 7(5) = 17 ---> -18 + 35 17 (true)

4. 3(8) + 7(-1) = 17 ---> 18 + -7 = 11 (false)

(5, 3) and (-8, -2) are not solutions to the equation. (-6, 5) and (8, -1) are solutions to the equation.

To determine whether each ordered pair is a solution to the equation 3x + 7y = 17, we substitute the given x and y values into the equation and check if it holds true.

Let's evaluate each ordered pair:

(x, y) = (5, 3)

Substitute x = 5 and y = 3 into the equation:

3(5) + 7(3) = 15 + 21 = 36

36 ≠ 17

Therefore, (5, 3) is not a solution to the equation.

(x, y) = (-8, -2)

Substitute x = -8 and y = -2 into the equation:

3(-8) + 7(-2) = -24 - 14 = -38

-38 ≠ 17

Therefore, (-8, -2) is not a solution to the equation.

(x, y) = (-6, 5)

Substitute x = -6 and y = 5 into the equation:

3(-6) + 7(5) = -18 + 35 = 17

17 = 17

Therefore, (-6, 5) is a solution to the equation.

(x, y) = (8, -1)

Substitute x = 8 and y = -1 into the equation:

3(8) + 7(-1) = 24 - 7 = 17

17 = 17

Therefore, (8, -1) is a solution to the equation.

In summary:

(5, 3) and (-8, -2) are not solutions to the equation.

(-6, 5) and (8, -1) are solutions to the equation.

To know more about solution click here :

https://brainly.com/question/28970521

#SPJ2

Answer:

After 4 weeks, he will have $57

After 20 weeks, he will have $105

Step-by-step explanation:

6(5v - k) / 2

6(5(5) - 8) / 2

6(17) / 2

102/2 = 51

Answer: below

Step-by-step explanation:

Part A)  After 4 week he will have saved ... (45+3x4= $57)... 57 dollars

Part B) After 20 weeks... (45+3x20= 105)... i dont know if he can buy the skate board bc you never said how much the skateboard cost.

2. 6(5v-k)/ 2

6(25-8)/2

150-48/2

102/2 = 51

Answer:

16.75

Step-by-step explanation:

Answer:

it would be 0 cause 142 and 308 already equal 450

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

450 - (142 + 308) = 0. ) is the answer.

Hope it helps!

Answer:

2 he needs to add 2 to keep the ratio the same, the total would be 12

Step-by-step explanation:

before he adds the book the ratio is 2:1 (fiction to non-fiction) and he add 4 to the fiction so he needs to add 2 non-fiction books because this ration means fiction/2 = non-fiction so 4/2 = 2

hope this helps have a blessed day :)

Answer: What is a factor?

A factor is a  a divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n. In this case, one also says that n is a multiple of m. An integer n is divisible by another integer m if m is a divisor of n; this implies dividing n by m leaves no remainder.

Step-by-step explanation: Why can’t certain expressions be factored?

Because there are no common factors other than 1 the constants cannot be factored. And, because there is no x in the second term (10), we cannot factor an x out of the two terms.

Answer:

-12 = -24

Step-by-step explanation:

Answer:

w  = -12

-12 = -24

Step-by-step explanation:

Solve for  w  by simplifying both sides of the equation, then isolating the variable.

Answer:

13y+3

Step-by-step explanation:

cancel out the negative 4

this answer is wrong

Answer:

7

Step-by-step explanation:

the left side is 9+18=27

so the right side is 20+x=27

and 27-20=7

Answer:

1. g. $0.10 per square inch

2. b. $0.08 per square inch

3. f. $10

4. m. $8

5. h. 79 in²

6. j. 113 in²

Step-by-step explanation:

1. A = πr²

  r = diameter ÷ 2 = 10 ÷ 2 = 5

  A = π(5)² = 25π in² ≈ 78.53981

  $8.00/25π = $0.10 per square inch

2. A = πr²

  r = diameter ÷ 2 = 12 ÷ 2 = 6

  A = π(6)² = 36π in² ≈ 113.0973355

  $10.00/36π = 0.088419 = $0.09 per square inch

3. information/answer was provided

4. information/answer was provided

5. A = πr²

  r = diameter ÷ 2 = 10 ÷ 2 = 5

  A = π(5)² = 25π in² ≈ 79 in²

6. A = πr²

  r = diameter ÷ 2 = 12 ÷ 2 = 6

  A = π(6)² = 36π in² ≈ 113 in²

Answer:

c on edg

Step-by-step explanation:

The value of x from the logarithmic equation is x = 3

The power to which a number must be increased in order to obtain another number is known as the logarithm. A power is the opposite of a logarithm. In other words, if we subtract an exponentiation from a number by taking its logarithm

The properties of Logarithm are :

log A + log B = log AB

log A − log B = log A/B

log Aⁿ = n log A

Given data ,

Let the logarithmic equation be represented as A

Now , the value of A is

log₃ ( x + 12 ) = log₃ ( 5x )

Now , the bases of the logarithm are equal

So , the value of ( x + 12 ) = 5x

On simplifying , we get

x + 12 = 5x

Subtracting x on both sides , we get

4x = 12

Divide by 4 on both sides , we get

x = 3

Therefore , the value of x = 3

Hence , the logarithm equation is solved

To learn more about logarithm click :

https://brainly.com/question/12049968

#SPJ7

Answer:

29

Step-by-step explanation:

The value of b by assuming that the two lines are parallel will be equal to 29°.

When two lines converge at a point, they produce an angle. The word "angle" refers to the length of the "gap" between these two rays. The symbol is used to denote it.

Radians, a unit of roundness or rotation, and degrees are the 2 most common units used to measure angles. In daily life, angles are present.

As per the given information provided by the given figure,

The angle is corresponding in nature,

So, the equation will be,

3b + 5 = 92

3b = 92 - 5

3b = 87

b = 87/3

b = 29°.

Therefore, the angle b is 29°.

To know more about angles:

https://brainly.com/question/28451077

#SPJ2

Answer:

No solutions.

Step-by-step explanation:

We need to use PEMDAS to solve this problem, and as the first letter in PEMDAS stands for (parentheses) we should subtract 7 from 15 to get 8.

Secondly, we would multiply 2 by 8 to get 16.

Finally, we subtract 9 from 16 to get 7.

64 ≠ 7, so the answer would be no solutions.

Answer:

yes sir burrito

Step-by-step explanation:

Answer:

y= -5x + 6

Step-by-step explanation:

Answer:

Equation of line in Slope intercept form

[tex]y=-5x+6[/tex]

Equation of line in Point-slope form

[tex]y-1=\frac{-4-1}{2-1} (x-1)[/tex]

Step-by-step explanation:

Equation of line

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)[/tex]   ----------- (1)

Here

[tex](x_1. y_1)=(1, 1) \ \ \ and \ \ \ (x_2, y_2)=(2, -4)[/tex]

Substituting values in equation (1)

[tex]y-1=\frac{-4-1}{2-1} (x-1)[/tex]

[tex]y-1=-5 (x-1)[/tex]     (This is equation line in point-slope form)

Simplifying it further

[tex]y=-5x+5+1[/tex]

[tex]y=-5x+6[/tex]  (This is equation of line in slope-intercept form)

Answer:

25

Step-by-step explanation:

4 times (x-25)=0

Answer:

25.612

Step-by-step explanation:

[tex]\sqrt{20^2+16^2\\}[/tex]= 25.612