Mathematics High School

please give a detailed explanation, im genuinely trying in this class​

Please Give A Detailed Explanation, Im Genuinely Trying In This Class

Answers

Answer 1

Answer:

C) [tex]\frac{\sqrt{6} }{14}[/tex]

Step-by-step explanation:

We multiply the conjugate (7 √2) with the denominator and numerator:

[tex]\frac{\sqrt{3} }{7\sqrt{2} } *\frac{-7\sqrt{2}}{-7\sqrt{2}} \\\\\frac{\sqrt{6} }{14}[/tex]

I also just used my calculator and it gave me this

Related Questions

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Answers

Answer:

V = 612.3

Step-by-step explanation:

d = 6

r = 3

Volume of a cylinder:

V = πr²h

V = 3.14(3²)(20)

V = 3.14(9)(20)

V = 565.2

Volume of a cone:

V = πr²(h/3)

V = 3.14(3²)(5/3)

V = 3.14(9)(5/3)

V = 47.1

Combined:

565.2 + 47.1

612.3

Ms. Cathy bought a package of pens. Out of every 10 pens, 6 are black. If there are 20 pens in the pack, what fraction of the pens in the pack are black? What percent of the pens in the pack are black?​

Answers

Answer:

12/20 or 60%

Step-by-step explanation:

A triangle has angle measurements of 44 degrees,87 degrees, and 49 degrees. What kind of triangle is it? acute,right, and obtuse.

Answers

i think it should be obtuse but i am not sure

Find the value of x (7TH GRADE MATH)

Answers

Answer:

the answer is 5

Step-by-step explanation:

a right angle has a total of 90 degrees

so you subtract 65 from 90 and get 25

that is the total degrees in the rest of the angle

then you would have to divide 25 by 5

leaving you with 5

Find the value of x.

Answers

Answer:

x = -7

Step-by-step explanation:

All triangle angles add up to 180

84 + x + 59 + x + 51 = 180

2x + 194 = 180

2x = 180 - 194

2x = -14

x = -7

Complete the following table using the equation: y = x squared
x
-3
-1
0
1
3
y


Plot the points on a graph and determine which graph best represents the equation.
Graph A
On a coordinate plane, a parabola opens up and goes through (negative 2, 4), has a vertex at (0, 0), and goes through (2, 4).
Graph B
On a coordinate plane, a parabola opens down and goes through (negative 2, negative 4), has a vertex at (0, 0), and goes through (2, negative 4).
a.
-9, -1, 0, -1, -9; Graph B
b.
9, 1, 0, 1, 9; Graph B
c.
9, 1, 0, 1, 9; Graph A
d.
-9, -1, 0, -1, -9; Graph A

Answers

Answer:

Step-by-step explanation:

ITS A

Answer:

The answer is C , Graph A

Step-by-step explanation:

What is the horizontal difference between (2, 4) and (-1, 0)?

Answers

Answer:

3

Step-by-step explanation:

helpppppppp pleaseeeeeeeeeeeee

Answers

Answer:

area of the triangle is

[tex] \frac{1}{2} \times 4.4 \times (6.1 + 3.3)[/tex][tex] 2.2 \times 9.4[/tex][tex]20.68 \: {in}^{2} [/tex]

Dexter has 83 tiles left over from tiling his bathroom floor and he would like to use them to tile the front entrance of his house. Each tile has an area of 49 in^2. the function A(t)=49t represents the area A(t), in square inches that t tiles cover. What domain and range are reasonable for the function? What is the graph of the function?

Answers

Answer: [0, 396]

Step-by-step explanation:

The domain is the acceptable values of x in the function.  In this case, x = t, the number of tiles.  If you think about it, the minimum number of tiles is 0 (you can't have a negative number of tiles), and the maximum number of tiles is 44 (you only have 44 tiles).  So, the domain for this function is from 0 to 44.

0 to 44 written in interval notation is [0,44].

The range is the acceptable values of y in the function.  In this case, y = A, the area given.  A(t) = 9t, so you can use the acceptable values of t to get the range.  Again, the minimum area is 0 because you can't have negative area. To find the maximum area, plug in the maximum number of tiles: 9.

A(t) = 9t

A = 9(44)

A = 396

With the maximum number of tiles, 44, the area you get is 396 cm².  Therefore, the acceptable values of A are from 0 to 396.

0 to 396 written in interval notation is [0, 396].

3x + 7 = 5x
7 = 2x

What step would you take to get from 3x + 7 = 5x to get to 7 = 2x

Answers

Answer:

this goes with steps and answer

Step-by-step explanation:

hope this helped!

so you take the 3x and subtract it from the 5x getting your 2x. this leaving the 7 on the opposite side of the equal sign. therefore you are left with 7=2x. hope this helped:)

there is 1 pint of liquid in this container if another pint was added how much liquid would ther be

Answers

Answer:

2 us liquid pints =

0.25 us liquid gallon

Step-by-step explanation:

_______ samples are used to ensure representation from different types of subgroups in a population.

Answers

Answer:

d

Step-by-step explanation:

can i have brainliest

answer question asap please

Answers

AnswThe answer would be 5 and 86

Step-by-step explanation:

sulitions are 5 and 86

Answer:

x = 1/5 , -3/5 ??

Step-by-step explanation:

y = 5x + 2
4x - y = 0
Is (2 , 12) a solution of the system?

Answers

Step-by-step explanation:

no , (2,12) only works for the 1st one

Answer:

Step-by-step explanation:

No

Which of the following describes the function of the nervous system?

A. to regulate internal temperature

B. to carry blood through the body

C. to rid the body of cellular waste

D. to respond to external stimuli

Answers

Answer: D

I think lol

The best description of the function of the nervous system among all the options is to respond to external stimuli.

Your nervous system is your body’s command center. Originating from your brain, it controls your motions, studies, and instinctive reactions to the humankind around you. It too controls distinct body systems and processes, similar to digestion, breathing, and sexual growth( puberty). conditions, accidents, poisons, and the natural aging course can compromise your nervous system.

Thus, option D is correct in that the nervous system is responsible to respond to external stimuli.

Learn more about Nervous System here:

https://brainly.com/question/8695732

#SPJ6

find value of x and y

Answers

Step-by-step explanation:

x = 144 ( corresponding angle)

y = 180- 144 ( linear pair)

y= 36°

?? I need a step by step explanation, please

Answers

Answer:

( 4 , − 1 )

Step-by-step explanation:

y= (x + 3)(x + 5)

y= x^2 + 5x + 3x + 15

y= x^2 + 8x +15

Edge! 15 pts! PLEASE HURRY! Which is a diagonal through the interior of the cube?
A cube. The top face has points A, B, D, C. The bottom face has points E, F, H, G.
Side A H
Side B E
Side C H
Side F G

Answers

Answer:

Side AH

Step-by-step explanation:

he other 3 sides only go through one face of the cube

Answer:

s√3

Step-by-step explanation:

Draw in the diagonal of the base, which is the line freom G to F.  If the side length of this cube is s, then the length of this diagonal is

d = √(s² + s²) = (√2)s.

Now draw in the diagonal of the cube:  draw a line segment from G to B.  We have already found that the length of the diagonal GF is d = s√2.  Apply the Pythagorean Theorem to the triangle whose sides are s√2 and s:

diagonal of cube = square root of the sum of the squares of s√2 and s:

= √(2s² + s²)= √(3s²) = s√3

2, en un curso de 37 estudiantes se proponen a elaborar un cohete con material reciclado, para poder hacer los cohetes, en el curso se cuenta con 151 tubos de cartón que se recolectaron en una jornada de reciclable. A: si para hacer un cohete se necesitan 4 tubos de cartón, ¿Hay suficientes tubos para que cada estudiante elabore su cohete?

Answers

Answer:

Yes, there enough tubes for each student to make their rocket.

Step-by-step explanation:

Given - In a course of 37 students they propose to make a rocket with recycled material, in order to make the rockets, in the course there are 151 cardboard tubes that were collected in a recyclable day.

To find - If 4 cardboard tubes are needed to make a rocket, are there enough tubes for each student to make their rocket ?

Proof -

Given that,

1 rocket is made with 4 cardboard tubes

Total cardboard tubes = 151

Now,

1 student will make 1 rocket

Total students = 37

⇒Total rockets made by the course = 37

Now,

1 rocket used 4 cardboard tubes

⇒37 rocket used 37×4 cardboard tubes

⇒37 rocket used 148 cardboard tubes.

As

148 < 151

⇒There are enough tubes for each student to make their rocket.

PLEASE HELP ANSWER CORRECTLY !!!!!!!!!!!!!! WILL MARK BRIANLIEST !!!!!!!!!!!!!!

Answers

Hello, hehelol12.

The length of PR is the same as TR.

Length of PR = 11.

The measure of angle PQR is the same as angle RST.

Measure of angle PQR = 39

I hope this helps you out!

PS. Brainliest would be appreciated. :)

x+2y+1=0,2x-3y-12=0 solve by substitution method​

Answers

Answer:

Step-by-step explanation:

x=-1-2y

-2-4y-3y-12=0

-7y=14

y=-2

x=3

Can somebody help with question 5.

Answers

17 i think
wxh/v=L
hope this help

I need help please I’ll give you 15 points

Answers

Answer:

3 x 5 x 5

Step-by-step explanation:

75 = 15 x 5

15 = 3 x 5

Which of these is a trinomial?
A. 2x^3 – 7y^3
В. 5xy
C. 2x - 7
D. x + 2y^2-7​

Answers

Answer:

D. x + 2y² - 7

Step-by-step explanation:

it because it has 3 terms

Write an expression that represents: 6 less than ⅓ times the sum of x and 4


Help please dont say I dont knoẁ and waste my points know or give something this is the second time I am asking this question

Answers

Answer:

(1/3-6) x  (x+4)

Step-by-step explanation: Less than indicates you put the 1/3 first, giving you 1/3-6. Then you multiply that by x+4. Sum means additon! The X in the middle is a multiplacation symbol.

Michelle is making a scale model of her favorite car. The actual car is 8 feet long and 4 feet wide. Michelle wants her model to be 12 inches in length. Which could be used to find the width of her model if she used the same ratio?

Answers

Answer:

6 inches

Step-by-step explanation:

It is given that :

Length of the actual car = 8 feet

Width of the actual car is = 4 feet

Michelle is making a model of her car.

The length of her model car  = 12 inches

Therefore, the ration is 3 : 2

So the width of the model car = 4 x 3/2

                                                 = 6 inches

2x+10=28
What is the solution to this equation

Answers

Answer:

x=9

Step-by-step explanation:

step 1. restate the equation

2x+10=28

step 2. subtract 10 from both sides of the equations

2x+10-10=28-10

2x=18

step 3. get x alone by dividing 2 from both sides

2x/2=18/2

step 4. the answer

x=9

timothy is planting a garden. Tulips cost $125 per bub. The total cost c of his gardening supplies is $1.25 per bub b plus $10 for a bag of mulch. What is the independent and dependent variables and the equation and solution!

Answers

Answer:

Independent variable = number of bub (b)

Dependent variable = total cost (c)

Equation: c = $1.25b + $10

Timothy would spend: $20

Step-by-step explanation:

Total cost = c

Number of bub = b

✔️Total cost, c, is dependent on the number of bub, b.

Therefore:

Independent variable = number of bub (b)

Dependent variable = total cost (c)

✔️Equation that describes this situation can be written as:

c = $1.25b + $10

✔️If Timorhy buys 8 bubs, he would spend the following:

Substitute b = 8 into c = $1.25b + $10, and solve for c.

c = $1.25(8) + $10

c = $10 + $10

c = $20

A square is cutting hair creating two equal triangles each triangle has an area of 0.32 cm what is the side length of the square in centimeters

Answers

Answer:

the lengt is 3.27cm

Step-by-step explanation:

its pretty hard to explain

Answer:

0.787400787

Step-by-step explanation:

Two equal triangles cut from a square are each .32cm so just multiply that by two and find the square root. Square root of .62 is 0.787400787

(っ◔◡◔)っ ♥ Hope It Helps ♥

What is the value of x?


Enter your answer in the box.

x =

Answers

Answer:

x = 4

Step-by-step explanation:

Let's find the length of JL as a first step.  Knowing the result, we can easily find x.

                                  |JL|              1

sin 30 degrees = ----------------- = --------

                                    8√2            2

Then 2 |JL|  = 8√2, or  |JL|  = 4√2

Next, find x:  sin 45 degrees = x / |JL| = x / [4√2], and since sin 45 degrees is 1 / [√2],

                     1

x / [4√2] = --------    which results in x = 4

                    √2

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