Find the surface area

Answer:

B. x=10

Step-by-step explanation:

We are given the equation:

20/x=2

To solve this, we must get x by itself. First, let's cross multiply.

20/x= 2/1

Multiply the denominator of the first fraction by the numerator of the second. Then, multiply the numerator of the first and the denominator of the second.

x*2= 20*1

2x=20

x is being multiplied by 2. The inverse of multiplication is division. So, divide both sides of the equation by 2.

2x/2 = 20/2

x= 20/2

x=10

Therefore, the answer is B. x=10

Answer:

Estimated answer 80

Step-by-step explanation:

I believe its 84 or some where in 80. Because the estimated value I got by solving this geometrical question is somewhere in 80. HOPE this helps! :D

Answer:

part 2 it should be 20 minutes

Step-by-step explanation:

40 = 8 add another 40= 16 half of 40 is 20 so half of 8 is 4 so add 8+8+4

that equals 20

part 1 even d on't understand

Answer:

Table 2

Step-by-step explanation:

The question is to identify the table where the relative frequency of orders for blue pants is half the relative frequency of their orders for black shorts.

We are interested in the number of blue pants and black shorts.

If we name them as p and b respectively, then we are looking for a table where s/p=2

Let's verify relevant data in all tables:

Table 1:

Table 2:

Table 3:

Table 4:

So only one of tables- the second one from top represents the required data.

Answer:

The second table

Step-by-step explanation:

I did the test.

Hey there! :)

Answer:

C. (0, 5)

Step-by-step explanation:

Where the equation crosses the y axis is known as the y-intercept.

In the equation y = mx + b, the b  value represents the y-intercept where x = 0. Therefore:

Rearrange the equation pictured:

y = 5 - 3x --> y = -3x + 5

The b value in this equation is 5, so

The y-intercept of this equation is (0, 5).

Answer:

Option C is the correct option.

Here,

When X=0

y= 5-3*0

= 5-0

=5

x=0

y=5

Hope this helps...

Good luck on your assignment..

Answer:

The equation of the line is

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

Step-by-step explanation:

Equation of a line is y = mx + c

where m is the gradient

c is the y intercept

Gradient = 1/2

Equation of the line using point ( 4 , -2) is

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

Hope this helps you

Answer:

I hope this helps you! Have a great rest of your day.

Answer:

The factors of the polynomial are 5,  ( 3x - 2y), and  (3x + 2y)

Step-by-step explanation:

The given polynomial is 45x² - 20y²

45x² - 20y² = 5 (9x² - 4y²)

45x² - 20y² = 5 [ (3x)² - (2y)² ]

Using difference of two squares,  (3x)² - (2y)² = ( 3x - 2y)(3x + 2y)

45x² - 20y² = 5 ( 3x - 2y) (3x + 2y)

The factors of the polynomial are 5,  ( 3x - 2y), and  (3x + 2y)

Answer:

5(3x - 2)(3x + 2)

Step-by-step explanation:

Please indicate exponentiation with " ^ " :  45 x^2 - 20 y^2​.

Identify the GCF and factor it out:  5(9x^2 - 4y^2)

Recognize that (9x^2 - 4y^2) is the difference of two squares, which factors into (3x - 2y)(3x + 2y)

Then   45 x^2 - 20 y^2 = 5(3x - 2)(3x + 2)

Answer:

117,600 ways

Step-by-step explanation:

This problem can be solved using fundamental principle of counting , according to which , if there are m different things and n different things,

then there m*n ways to combine.

Example: if there 5 shirts and 3 ties,

then number of ways in which different combination shirt and tie can be worn is

5*3 = 15 ways.

____________________________________

In the problem,\

number of states is 50,

let those states be

A1, A2, A3, A4 ......A50

in each state there are 2 senate

Condition

3-Senator committee in which no two members are from the same state.

then

first member can be chosen from any of the 50 state,

hence first member can be chosen in 50 ways

for simplicity lets take state A1, you can choose any one you wish

second member cannot be from state A1, then number of state left = 49

second member can be chosen from  any of 49 state left

hence second member can be chosen in 49 ways

for simplicity lets take state A2,

Third member cannot be from state A1 and A2, then number of state left = 48

Third member can be chosen from  any of 48 state left

hence Third member can be chosen in 48 ways

for simplicity lets take state A3,

Hence no. of ways of choosing  3-Senator committee be formed such that no two Senators are from the same state = 50*49*48 = 117,600 ways

Answer:

No

Step-by-step explanation:

We have to check if 3/5 = 6/25. If we convert 3/5 into a fraction with denominator of 25 so that we can compare the two we get 15/25 and this is clearly not equal to 6/25. Therefore, the answer is no.

Answer:

A

Step-by-step explanation:

Edge 2020

Answer: 3.5 pi.

Step-by-step explanation: Since we know the circumference formula of a circle is 2*pi*radius, we just have to substitute 7 in there, and divide by 4. So here ya go, 3.5 pi.

Answer: x = 1

Step-by-step explanation:

Given that

Log (x + 4) + log (3x + 2) = log 100 - 2log 2

Log (x + 4) + log (3x + 2) = log 100 - log2^2

Log (x + 4) + log (3x + 2) = log 100 - log4

According to the laws of logarithms,

LogA + logB = log AB

Also,

Log A - logB = log A/B

Apply the law to left hand side and the right hand side of the equation

Log (x+4)(3x+2) = log(100/4)

Open the bracket in the left hand side

Log(3x^2 + 2x +12x + 8) = log25

Log(3x^2 + 14x + 8) = log25

The two log will cancel out

3x^2 + 14x + 8 = 25

3x^2 + 14x + 8 - 25 = 0

3x^2 + 14x - 17 = 0

Factorise the above equation

3x^2 - 3x + 17x - 17 = 0

3x( x - 1 ) + 17( x - 1 ) = 0

3x + 17 = 0

3x = - 17

X = -17/3

Or

X - 1 = 0

X = 1

Therefore, x = -17 or 1

Substituting 1 back into the equation give the solution to the equation. While -17 does not.

Answer:

the cricle is not a polygon since it does not have any sides and a polygon has to have striaght sides

Step-by-step explanation:

Answer:b

Step-by-step explanation:

Answer:

157+364= 521 square mm

Step-by-step explanation:

Area of 1/2 circle = 1/2 pi r-squared = 1/2x10x10x3.14 = 157 square mm

Area of trapezoid = (a+b)/2xh = (20+32)/2 x 14 = 364 square mm

157+364= 521 square mm

Answer:

The slope of a linear function. The steepness of a hill is called a slope. The same goes for the steepness of a line. The slope is defined as the ratio of the vertical change between two points, the rise, to the horizontal change between the same two points, the run

Step-by-step explanation:

:)

Answer:

A is the correct answer

Step-by-step explanation:

Graph (A) represents the system of equations 4x + y = 3 and 2x - 3y = 3 option (A) is correct.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

The system of equations

4x + y = 3 and

2x - 3y = 3

In the first line, the slope is -4, and the y-intercept at (0,3)

In  the second line, the slope is 2/3, and the y-intercept at (0,-1)

Thus, graph (A) represents the system of equations 4x + y = 3 and 2x - 3y = 3 option (A) is correct.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ2

Answer:

20%

Step-by-step explanation:

50x5 + 70x4 = 530. 530 divided by 9 equals 58.89. When you add 20 to 530 you get 550. 550 divided by 10 equals 55. The student got a 20%.

Answer:20

Step-by-step explanation:

average= total/number of items/students/whatever you take. So, here its ((5x50)+(4x70)+m)/10=55 and if you solve m you get 20 as the answer!

Answer:

answer is (0,1)

Step-by-step explanation:

check

by substituting x=0 and y=1 in the equation above

- 2(0)+1> -4

1> -4

Thereby (0,1) is the required solution to the inequality

Answer:

A =113.04 in ^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

The radius is 1/2 of the diameter

r = 1/2 (12) = 6

A = pi (6)^2

A = 36 pi

Using 3.14 for pi

A = 36 (3.14)

A =113.04 in ^2

Answer:

19 : 25

Step-by-step explanation:

Answer:

All real numbers

Step-by-step explanation:

The equation F(x)=x is an identity function. If you plot this on a graph, you notice that it is a diagonal line that always passes through (0,0), making the domain all real numbers.

Answer:

DE = 8

Step-by-step explanation:

EF * DF = FG * FJ

6 * (6 + x + 3) = 7 * (7 + 5)

6(x + 9) = 7 * 12

x + 9 = 7 * 2

x + 9 = 14

x = 5

DE = x + 3 = 5 + 3 = 8

Answer:

D

Step-by-step explanation:

The formula of a circle is [tex](x-h)^{2}+(y-k)^{2}=r^{2}[/tex] where the vertex is (h,k).

The vertex is (4,-2) and the radius is 5, so substitute the numbers in and you get the solution.

Answer:

D

Step-by-step explanation:

Answer:

2,435

Step-by-step explanation:

find two even and two odd

Answer:

See explanation below for further details.

Step-by-step explanation:

A rational consist of two real numbers such that:

[tex]\frac{a}{b} =c[/tex]

If c is a polynomial with a certain grade, then, both the numerator and the denominator must be also polynomials and the grade of the numerator must be greater than denominator.

If c is linear function, that is, a first order polynomial, then a must be a (n+1)-th polynomial and b must be a n-th polynomial.

Example:

If [tex]a = x^{2}[/tex] and [tex]b = x[/tex], then:

[tex]c = \frac{x^{2}}{x}[/tex]

[tex]c = x[/tex]

If c is a quadratic function, that is, a second order polynomial, then a must be a (n+1)-th polynomial and b must be a n-th polynomial.

Example

If [tex]a = 3\cdot x^{3}[/tex] and [tex]b = x[/tex], then:

[tex]c = \frac{3\cdot x^{3}}{x}[/tex]

[tex]c = 3\cdot x^{2}[/tex]

But if c is an exponential, both the numerator and the denominator must be therefore exponential function and grade of each exponential function must different to the other.

Example

If [tex]a = 10^{2x}[/tex] and [tex]b = 3\cdot 10^x[/tex], then:

[tex]c = \frac{10^{2\cdot x}}{3\cdot 10^{x}}[/tex]

[tex]c = \frac{1}{3}\cdot 10^{2\cdot x -x}[/tex]

[tex]c = \frac{1}{3}\cdot 10^x[/tex]

Otherwise, c would be equal to a constant function, that is, a polynomial with a grade 0.

If [tex]a = 5\cdot e^{x}[/tex] and [tex]b = -3\cdot e^{x}[/tex], then:

Example

[tex]c = \frac{5\cdot e^{x}}{-3\cdot e^{x}}[/tex]

[tex]c = -\frac{5}{3}[/tex]

It is worth to add that exponential functions can be a linear combination of single exponential function, similar to polynomials.

Example

[tex]5\cdot a^2\cdot x -9[/tex]

Answer:

y = (x - 2)² + 1

Step-by-step explanation:

Gnerela equation of a parabola in vertex form:

y = a(x - h)² + k

where (h, k) is the vertex

From the description of the graph:

Replacing into the general equation:

y = a(x - 2)² + 1

5 = a(0 - 2)² + 1

5 - 1 = a*4

4/4 = a

1 = a

Then, the equation is: y = (x - 2)² + 1

Answer:

The correct answer is A, "y = (x - 2)² + 1"

Step-by-step explanation:

I just completed the test and got full credit using this option.

Answer:

The won percentage is 24 / 29 ≈ 83% (24 + 5 = 29 games total) and the loss percentage is 5 / 29 ≈ 17%.

Answer: 2 1/10, 3.122, 3.19, 61/10

Step-by-step explanation:

Let's first turn each number into decimal form: (1/10=.1, 2/10=.2,etc.)

2.1, 6.1, 3.122, 3.19.  Obviously, the smallest number is 2.1, because it has a 2 in the ones place.  Next, we see a tie in the ones place between 3.122 and 3.19.  Then we look at the tenths place and see another tie.  Then, at the hundredths place, we see that 3.19 is greater that 3.122.  Thus, the order of the numbers is 2.1,3.122,3.19,6.1.

Hope it helps <3