simplify root45 - root20 +4root5

Answers

Answer 1

Answer:

( -3√5)

Step-by-step explanation:

√45 - √20 - 4√5 = √5*3*3 - √2*2*5 - 4√5

                            = 3√5 - 2√5 - 4√5

                            = √5 (3 - 2 - 4)

                            =  ( -3√5)


Related Questions

Write the rule for finding a point translated vertically k units up. 2. Use this rule to find the coordinates for (−3, −6) when translated 5 units up.

Answers

Answer:

Rule is (x, y+k)

New point is (-3,9)

Step-by-step explanation:

A point translated vertically k units up means the x coordinate remains the same in the translation but the y coordinate is increased by k units

This can be represented mathematically as;

Let;s assume the point to be A with coordinates (x,y) then to get the image of the point under  a vertical translation k units up you add k to the y coordinate value.

Given ;

[tex]A=(\frac{x}{y} )\\\\T=(0,k)\\\\A'=(\frac{x}{y} )+(\frac{0}{k} )=(\frac{0+x}{y+k} )\\\\A'=\frac{x}{y+k} =(x,y+k)[/tex]

where T is the translation

In the question

Given (-3,-6) and T is (0,5) the new coordinate will be

[tex]=(\frac{-3}{4}) +(\frac{0}{5} )=\frac{-3}{9} =(-3,9)[/tex]

What's the elapsed time between 2:16 am and 8:10 PM

Answers

For this case we have that from 2:16 am until 2:16 pm exactly 12 hours have passed. On the other hand, from 2:16 p.m. until 8:16 p.m., exactly 6 hours have elapsed.

If we add, we have that from 2:16 am to 8:16 pm have elapsed: 12 + 6 = 18 hours.

As we ask for the time elapsed between 2:16 am until 8:10 pm we must subtract 6 minutes. So, we have:

18 hours with 54 minutes

Answer:

18 hours with 54 minutes

What is the measure of

Answers

The answer for this problem: Option C.

In a school 315 girls play at least one sport. 100 play a fall sport, 150 play a winter sport, and 200 play a spring sport. If 75 girls play exactly 2 sports, how many play three?

Answers

Answer:

40 students play all three games .

Step-by-step explanation:

You have universal and it says everyone likes all three games so your union is same as universal and there is no complement or any one who didn't like any games so use formule of universal = n A + n B + n C - n only interaction or who likes any two .Solve it and you will get your answer

what is the y-intercept of the function, represented by the table of values below x= -2,1,2,4,7 y=15,6,3,-3,-12

Answers

Answer: The y-intercept would be 10

Step-by-step explanation:

(-2, 15), (1, 6), (2, 3), (4, -3), (7, -12) are the coordinate points, you can graph it to find the intercept. I used the graphing calculator desmos.

Answer:its 9

Step-by-step explanation:

Which of the following describes how to translate the graph y = |x| to obtain the graph of y = |x+1|+1?
shift 1 unit left and 1 unit down
shift 1 unit left and 1 unit up
shift 1 unit night and 1 unit down
shift 1 unit nght and 1 unit up

Answers

Shift 1 unit to the left and 1 unit up

The answer is B. Hope this helps!

write the english sentence in 2 variables and then graph,
the y value is 4 less than 5 times the x value

Answers

Answer:

y = 5x - 4

see attached for graph

when a graphed line is vertical, it indicates that the relation is ?​

Answers

when a graphed line is vertical, it indicates that the relation is not a function

What is graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points. A graph consists of some points and lines between them. The length of the lines and position of the points do not matter.

We can visually identify functions by their graphs using the vertical line test. If any vertical line intersects the graph more than once, then the graph does not represent a function.

The vertical line represents a value in the domain, and the number of intersections with the graph represent the number of values to which it corresponds.

As we can see, any vertical line will intersect the graph of y=|x|−2 only once.

Therefore, it is a function.

A vertical line can cross the graph of x=|y|+1 more than once.

therefore, it is not a function.

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The zeros of the function p(x) = x2 – 2x – 24 are

Answers

Answer: x = 6, x = -4

Step-by-step explanation:

Find two numbers whose product is the c-value (-24) and sum is the b-value (-2):

0 = x² - 2x - 24

                    ∧

                   1 -24

                   2 -12

                   3  -8

                   4  -6 = -2    This works!

0 = (x + 4)(x - 6)

Apply the Zero-Product Property (set each factor equal to zero and solve)

0 = x + 4      0 = x - 6

-4 = x            6 = x

The solutions are x = 6 and x = -4. Therefore, the zeros of the function are 6 and -4.

Finding the Zeros of the Function p(x) = x^2 – 2x – 24

To find the zeros of the function p(x) = x^2 – 2x – 24, we need to determine the values of x that make the function equal to zero. This means we solve the equation:

x^2 – 2x – 24 = 0

This is a quadratic equation and can be solved using factoring. We look for two numbers that multiply to -24 and add to -2. These numbers are 4 and -6:

(x - 6)(x + 4) = 0

Setting each factor equal to zero gives us the solutions:

x - 6 = 0  → x = 6x + 4 = 0  → x = -4

So, the zeros of the function p(x) = x^2 – 2x – 24 are 6 and -4.

Multiply or divide as indicated. X^-3•x^7

Answers

Answer: X^4 you just subtract or add with exponents

Step-by-step explanation:

Final answer:

In mathematics, when you multiply variables that have the same base, you add their exponents. The solution to the problem X^-3•x^7 is x^4.

Explanation:

To multiply the variables with the same base, you need to add their exponents. In this case, x-3 multiplied by x7 would be equal to x-3+7 or x4. Therefore, the answer is x4.

The problem given is X^-3•x^7. This problem involves the multiplication of two variables with exponents. In mathematics, when you multiply variables with the same base, you keep the base and add the exponents. This is called the 'Laws of Exponents'. Therefore, for X^-3•x^7, our base is X, so we add the exponents -3 and 7 to get 4. Hence, the result is x^4.

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What’s the area of a rectangle measuring 13in tim12 in ?

Answers

Answer:

156 sq in

Step-by-step explanation:

If you have a rectangle measuring 13 inches by 12 inches, you will consider the side with 13 inches as the length of the rectangle and the one with 12 inches as the width of the rectangle.

The area of a rectangle is obtained by multiplying the length by the width... so, you'll get:

A = 13 in x 12 in = 156 square inches

Brian is riding his bike. He biked a distance of 14 miles at a rate of 14 miles per hour. Rearrange the distance formula, d = rt, to solve for Brian's time in minutes.
A.1 minute
B.7 minutes
C.60 minutes
D.420 minutes

Answers

I’m not sure how to rearrange the formula, but the answer would be c because he rode his bike for 14 miles and it said he did fourteen miles per hour so they means he did it for 60 minutes.
Hope this makes sense!

To cover the distance of 14 miles at a speed of 14 miles per hour Brian will take 1 hour means 60 minutes.

What is speed?

The speed is the rate of distance covered by a person or a vehicle in a particular time.

How to calculate time?

We have been given the distance=14 miles

Speed=14 miles per hour

We have also been given the formula of distance which is

d=rt

we have to rearrange it to calculate time

t=d/r

so the time will be calculated as t=14/14

t=1 hour because the speed is of per hour.

Hence Brian will take 60 minutes to cover the required distance.

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The first week Samantha learned to read Braille, she could read 10 words per minute. In the second week she increased her speed by 20%. In the third week she increased her speed again by another 25%. How many words could she read per minute by the third week? PLEASE HURRY AND TELL ME!

Answers

Answer:

Third week, 15 words per minute

Step-by-step explanation:

First week: 10 words per minute

Second week

10 * 20% = 10*.2 = 2

It is an increase, so we add the 2 to the original amount

10+2 = 12 word per minute

Third week

12 * 25% = 12 *.25 = 3

It was an increase, so we add the 3 to the amount in week 2

12+3 = 15 words per minute

A total of 505 tickets were sold for a school play they were either adult tickets or student tickets they were 55 more student tickets so than adult tickets how many adult tickets were sold ?

Answers

Hello There!

The number of adult tickets sold in the school play = 225

Total Number Of Tickets = 505

Number Of Student Tickets = x + 55

Number of adult tickets sold can be represented by X

Number of student tickets = X + 55

X+X+55=505

2x+55=505

2x=505-55

2x=450

X=225

Answer:

225

Step-by-step explanation:

x+x+55 = 505

2x + 55 = 505

2x = 505-55

2x = 450

x = 225

GOOD LUCK ! ;)

(X+2)(x+6) simplified

Answers

Answer:

x^2 +8x+12

Step-by-step explanation:

(X+2)(x+6)

Foil

first: x*x = x^2

outer: x*6 = 6x

inner : 2*x = 2x

last: 2*6 = 12

Add them together:  x^2 +6x+2x+12 = x^2 +8x+12

What equation results from completing the square and then factoring? X^2+22x=31
A) (x+11)^2 = 152
B) (x+22)^2 = 152
C) (x+11)^2 = 53
D) (x+22)^2 = 53

Answers

Answer:

Step-by-step explanation:

Rewrite X^2+22x=31, leaving space after the "22x:"

X^2+22x                          = 31

The coefficient of x is 22.  Take half of that, obtaining 11.  

Square this result:  11^2 = 121.

Write in "+121      -121" after the x term:

X^2+22x  + 121 - 121 = 31

Rewrite X^2+22x + 121 as

          (x + 11)^2  -121 =  31

Add 121 to both sides:

           (x + 11)^2 = 152

Take the square root of both sides:

            x + 11 = ±√152 = ±2√38

Finally, x = -11 ±2√38.

This is "solution by completing the square"

Answer: OPTION A

Step-by-step explanation:

We have this quadratic equation: [tex]x^2+22x=31[/tex]

In order to complete the square the first step is to pick the coefficient of the x term, divide it by 2 and square it. Then:

[tex](\frac{22}{2})^2=11^2[/tex]

Now we must add 11² to both sides of the equation:

[tex]x^2+22x+11^2=31+11^2[/tex]

Therefore, after complete the square and factor, we get:

[tex](x+11)^2=152[/tex]

This matches with the option A.

Evaluate: (36/49)^1/2

Answers

Answer:

6/7

Step-by-step explanation:

One way of doing this problem is to find the square root of numerator separately (it is 6) and the square root of the denominator likewise (it is 7).  Then the value of the given expression is 6/7.

The value of the given expression is [tex]\frac{6}{7}[/tex].

What is a mathematical expression?

"A mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context."

The given mathematical expression is

[tex](\frac{36}{49})^{\frac{1}{2}} \\= (\frac{6^{2} }{7^{2} })^{\frac{1}{2}}\\= [(\frac{6}{7})^{2}]^{\frac{1}{2}}\\= \frac{6}{7}[/tex]

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simplify 8BC - 9BC + 10BC - 6BC​

Answers

Answer:

3BC

Step-by-step explanation:

8BC - 9BC + 10BC - 6BC = BC(8 - 9 + 10 - 6) = BC(3) = 3BC

There you go in the attached.

Find the digit in the tenths place of 25.391

Answers

Answer:

3

Step-by-step explanation:

The digit in the tenths place of 25.391 is 3.

Answer: [tex]3[/tex]

Step-by-step explanation:

It is important to know that, in order to find the digit in the tenth place of a decimal number, you need to indentify the first digit located to the right of the decimal point.

Therefore, knowing this and having the decimal number provided in the exercise:

 [tex]25.391[/tex]

You can observe that the  first digit to the right of the decimal point is 3.

Therefore, the digit in the tenths place of ths decimal number is: [tex]3[/tex]

(5/x)+(3x-2)=4 what is the first step​

Answers

Answer:

Step-by-step explanation:

get rid of the denominator by multiplying by x

Drag the values to order them from least to greatest, with the least at the top.
A. [tex]\sqrt{17}[/tex]
B. [tex]\frac{\pi +7 }{5}[/tex]
C. [tex]\sqrt{5}[/tex]

Answers

Answer:

Step-by-step explanation:

You use latex very well. Nice work.

sqrt(17) = 4.123

sqrt(5) = 2.236

==============

pi + 7

=====

5

3.14 + 7

======

5

10.14/5 = 2.028

Answer

B. \frac{\pi +7 }{5}   2.028

C. \sqrt{5}               2.236

A. \sqrt{17}              4.123

What is the simplified form of square root of 400 to the 100th power ?

Answers

Answer:

‭1.267650600228229401496703205376e+130‬

Step-by-step explanation:

√400 =20

20¹⁰⁰ = ‭1.267650600228229401496703205376e+130‬

Hope this helps!

In its first year of operation, Big Lake Camp had 40 campers. This year’s attendance was 180% of the first year’s. How many campers participated this year?

Answers

Answer:

72 campers.

Step-by-step explanation:

You can do this with a simple equation. 180% = 1.8 as a decimal fraction. Let x be this  year's attendance. Then:

x = 1.8* 40

x = 72 campers.

Answer:

72 Campers

Step-by-step explanation:

Hope this helps:)

the number of wheel on a group of buses

Answers

Final answer:

The number of wheels on a group of buses involves mathematical calculations and can be analyzed using multiplication, probability, and physics, particularly when combined with other factors such as passenger capacities or mechanical variables like angular velocity of a flywheel within the bus.

Explanation:

The question about the number of wheels on a group of buses relates to mathematical calculations, specifically pertaining to multiplication and potentially to probability and combinatorics if one were analyzing how to most efficiently deploy a fleet of buses for transportation or which bus to take based on passenger load and capability.

A practical example of a bus-related math problem would be: if a bus has 6 wheels, then a fleet of 10 buses would have a total of 60 wheels. This is a straightforward multiplication problem (10 buses x 6 wheels per bus = 60 wheels).

In the context of probabilistic analysis, considering a situation where buses have different passenger capacities, we might use the expected value formula E(X) = Σx₁p(x₁) to calculate the best option for transportation based on various factors, including the number of passengers each bus can transport.

Moreover, buses also have a place in physics problems. For instance, calculating the angular velocity a bus's flywheel must have to achieve a certain speed involves understanding the concepts of rotational kinetic energy and its transformation into translational energy. This more complex application lies within the realm of physics but has roots in mathematical computation.

Which equation could be used to find the distance, x, from the foot of the ladder to the base of the house?

Answers

Answer:

4,444097208657794

Step-by-step explanation:

c = 20ft

b = 19.5ft

just use the pythagorean theeorem

What is the slope of the line that contains the points (-1,2) and (4,3)

Answers

Answer:

slope = [tex]\frac{1}{5}[/tex]

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 1, 2) and (x₂, y₂ ) = (4, 3)

m = [tex]\frac{3-2}{4+1}[/tex] = [tex]\frac{1}{5}[/tex]

Answer:

1/5

Step-by-step explanation:

If f(x) =x^2 -2x and g(x) = 6x+4 for which value of c does (f+g)(x)=0

Answers

Answer:

c = -2

Step-by-step explanation:

The two functions are given as:

f(x) =  x^2 - 2x

g(x) = 6x + 4

To find:

(f+g)(x) = 0

We can evaluate (f+g)(x) using the given functions.

We know that:

(f+g)(x) = f(x) + g(x)

= x²- 2x + 6x + 4

= x² + 4x + 4

Now, we have for x = c:

c² + 4c + 4 = 0

x² + 2c + 2c + 4 = 0

c(c+2) + 2(c+2) = 0

(c+2)² = 0

c+2 = 0

c = -2

what is the equation for the line that passes through the points (4,2) and (0,6)?

Answers

Answer:

The equation is y=-x+6.

Step-by-step explanation:

To find the slope of this equation, we use the equation m=y2-y1/x2-x1, where m is the slope. Take one y coordinate and subtract it from the other and do the same with the x coordinates. Then, divide the difference of the y coordinates by the difference of the x coordinates. For example, 6-2/0-4. This gets us 4/-4. You can also do 2-6/4-0 which gets us -4/4. No matter what, we get -1 for each (we don't include the 1 in front of the x). To find the y-intercept, plug in the coordinates. For example, do 6=0(-1)+b or 2=4(-1)+b. No matter which you use, you get an answer of b=6. This gives you an equation of y=-x+6. Hope this helps :)

The equation of the line that passes through the points (4,2) and (0,6) is y = 6 - x

To determine the equation for the line that passes through the points (4,2) and (0,6),

We will use the formula for the determining the equation of a line with two given points

The formula for the determining the equation of a line with two given points is

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

The given points are (4,2) and (0,6)

Therefore,

x₁ = 4

y₁ = 2

x₂ = 0

y₂ = 6

Now, putting these into the formula,

We get

[tex]\frac{y-2}{x-4}=\frac{6-2}{0-4}[/tex]

This becomes

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

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

Then, the equation becomes

[tex]y-2 = -1(x-4)[/tex]

[tex]y-2 = -x +4[/tex]

[tex]y = 4+2-x[/tex]

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

Hence, the equation of the line that passes through the points (4,2) and (0,6) is y = 6 - x

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I need help!! It is possible to trisect a line segment using only a straightedge and a compass. True or fasle

Answers

Answer with explanation:

→Draw a Line segment of any length on a piece of paper.Measure the length of segment with the help of Straightedge.

→Now if it is a number divisible by 3,with the help of compass divide the length of segment by 3 and by placing the compass on the straightedge open the compass starting from 0 up to that length.

→If the number is not divisible by 3, round the number to nearest rational number.

→And then Mark arc with the help of Compass from starting of line segment the length being equal to the number obtained after dividing by 3,and after obtaining the first point taking the same width mark second arc from the point obtained.

This is required trisected line segment.

⇒The Statement is True which is we can trisect a line segment using only a straightedge and a compass.

Answer:

True

Step-by-step explanation:

Just did the test :)

PLEASE HELP ASAP I am kinda stuck on this because my teacher didn’t teach me this

Answers

Answer:

the first option

a = -2

b = 3

Step-by-step explanation:

See photo attached. (:

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