The angle of a triangle is 30 degrees 60 degrees and 90 degrees Is this a unique triangle

Answers

Answer 1

Yes it is called a right angled triangle


Related Questions

what the slope for (-2,-5),(2,-3)​

Answers

Answer:

[tex]\large\boxed{slope=\dfrac{1}{2}}[/tex]

Step-by-step explanation:

The formula of a slope:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

We have the points (-2, -5) and (2, -3). Substitute:

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

Find the equation in factored form zeros=-2 and 2 with vertex (0,-4)

Answers

Answer:

[tex]\large\boxed{y=(x+2)(x-2)}[/tex]

Step-by-step explanation:

Factored form of quadratic equation:

[tex]y=a(x-x_1)(x-x_2)[/tex]

x₁, x₂ - zeros

We have zeros: x₁ = -2 and x₂ = 2. Substitute:

[tex]y=a(x-(-2))(x-2)=a(x+2)(x-2)[/tex]

We have the vertex (0, -4). Put the coordinates of the vertex to the equation:

[tex]-4=a(0+2)(0-2)[/tex]

[tex]-4=a(2)(-2)[/tex]

[tex]-4=-4a[/tex]             divdie both sides by (-4)

[tex]1=a\to a=1[/tex]

Finally:

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

Final answer:

The equation in factored form given the zeros -2 and 2 with the vertex (0,-4) is f(x) = -(x + 2)(x - 2).

Explanation:

To find the equation in factored form given the zeros = -2 and 2 with the vertex (0,-4), we start with the standard form of a quadratic function, which is f(x) = ax^2 + bx + c. Since the vertex is at the origin and the parabola opens upward (the coefficient of x^2 is positive), and the factor form of the quadratic equation is f(x) = a(x - p)(x - q), where p and q are the zeros of the function.

In this case, using the given zeros of -2 and 2, the factored form starts as f(x) = a(x + 2)(x - 2). To find the value of a, we use the vertex (0,-4). The vertex form of a quadratic function is f(x) = a(x - h)^2 + k, where the vertex is at the point (h,k). Comparing the vertex form with the vertex given, we get f(x) = a(x - 0)^2 - 4. Since when x = 0, f(x) = -4, we can see that a must be -1. Therefore, the factored form of the quadratic function is f(x) = -1(x + 2)(x - 2) or f(x) = -(x + 2)(x - 2).

Circle P has a circumference of approximately 75 in what is the approximate length of the radius R use 3.14 for pi round to the nearest inch​

Answers

Answer:

Step-by-step explanation:

C = 2pir

75 = 2pir

75 / 6.28 = r

r = 12 inches

Answer:12

Step-by-step explanation:

C = 2pir

75 = 2pir

75 / 6.28 = r

r = 12 inches

aHHH I just wanna know if what I put on the table is right ;-;​

Answers

Yeah you did well on the table

No, your answer is not correct. There was a total of 484 students surveyed, so your grand total at the bottom needs to be 484.

The first section that you will want to complete is the girls. They have given you each of the breakdowns, so you just need to add them together for the total number of girls.

36+55+144 = 235 girls.

Next, you know that you have 484 students, and if 235 are girls then 249 are boys. (484-235=). Enter 249 for the total boys.

Now you know that you have 249 boys, 40 always wear glasses and 161 never do. In order to calculate how many sometimes do you need to subtract 40 and 161 from 249.

249 - 40 - 161 = 48 sometimes wear glasses.

Now, you just need to add up each of the columns at the bottom. The answers are 76,

103 and 305. When you total these number together you get 484, which is the total number of students.

What is the measure of < B?

Answers

Answer:

56

Step-by-step explanation:

The angular sum of a triangle is 180 and we know 2 angles so we just add them together and subtract that from 180 for the last angle measure.

90+34 = 124

180-124=56

cos 155 degrees equals

Answers

type cos(155) into a calculator

cos(155)= -0.906307787...

Answer:

-0.9063077

Step-by-step explanation:

The cos of 155 degrees is equals to -0.9063077

To obtain cos 155 degrees in radian multiply 155 by π/180

cos 155 degrees =  (155 /180) π  radian

Dividing 155 and 180 by its common factor 5 we will get (31/36)π

so cos 155 in terms of radian is equals (31/36)π

Since our angle is greater than 90 degrees and less than or equals to 180 degrees, it is located in quadrant II . In second quadrant the value of sin are positive only that is why cos 155 is  -0.9063077

It can also be solved by using identities of cosine

cos (∅) = sin(∅-90)

putting ∅ = 155, we get

= sin(155-90)

= sin(-65)

= -0.9063077

The base of this regular right pyramid is a square what is its surface area? HELP FAST PLEASE!!

Answers

Final answer:

The surface area of a regular right pyramid with a square base can be found using the formula: Surface Area = Area of Base + (1/2 × Perimeter of Base × Slant Height). You will need to know the side length of the base and the slant height of the pyramid to calculate the surface area.

Explanation:

A right pyramid with a square base has a surface area that can be calculated by finding the sum of the areas of all its faces. The surface area of a regular right pyramid can be determined using the formula:

Surface Area = Area of Base + (1/2 × Perimeter of Base × Slant Height)

Since the base of the pyramid is a square, the area of the base is given by:

Area of Base = Side Length × Side Length

To find the surface area, you will need to know the side length of the base and the slant height of the pyramid. Once you have these measurements, substitute them into the formula to calculate the surface area.

Can someone help please

Answers

Answer:

3:2

Step-by-step explanation:

I think the answer is 3:2 and 12:8

Hope this helps.

Please ASAP need the correct answer

-2

2

-1/2

1/2

Answers

Answer:

2

Step-by-step explanation:

The slope can be found by using the formula

m = (y2-y1)/(x2-x1)

   = (-2-10)/(-2-4)

   = -12/-6

  =2

The slope is 2

Margarito is drawing diagrams of a work system and wishes to show some of his calculations in a presentation to his colleagues. However, he has room only to show his numbers to the thousandths place.​

Answers

Answer:

He can show his numbers only to the thousandths place.​

This means with only three decimals

a) 2.3587

Needs to be rounded

2.359

b) 3/8 = 0.375

Doesn't need to be rounded

c) 4*π = 12.5663

Needs to be rounded

12.566

d) 10/9 = 1.111111

Needs to be rounded

1.111

e) 9/10 = 0.9

Doesn't need to be rounded

f) 15/4 = 3.75

Doesn't need to be rounded

Which ordered pairs are on the graph of exponential function?

Answers

Answer:

its (1,3)

Step-by-step explanation:

this is a bit of bad explaining but if you draw a graph you can find it, the verticle intercept is 0,2 if you wanted to know that. and also since the answers are there you could try them out so like 3=2+1, that works, and kinda like that

What percent of 20 is 40

Answers

Answer: " 200 % . "  

___________________________________________________

          " 20 " is:  " 200 % " of:  "40 ."

___________________________________________________

Step-by-step explanation:

___________________________________________________

(n/100) * 20 = 40 ;   Solve for "n" ;

Note that:  percent =  per "100" ;  thus "(n/100)" ;

Divide each side of the equation by:  "20" :

(n/100) * 20 ÷ 20 = 40 ÷ 20 ;

to get:

(n/100) = 2 ;  

Multiply each side of the equation by "100" ; to get rid of the "fraction" ;

          and to isolate "n"  on one side of the equation ;

          and to solve for "n" ;

(n/100) * 100 = 2 * 100 ;

to get:

n = 200 ;

The answer is:  200 % .  

___________________________________________________

          " 20 " is:  " 200 % " of:  "40 ."

___________________________________________________

Hope this helps!

  Best wishes to you in your academic pursuits

          — and within the "Brainly" community!

___________________________________________________

There is 200% of number 20 is, 40

Since, A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

To Calculate the percent of a number , divide the number by whole number and multiply by 100.

We can assume that,

x% of 20 is, 40

Hence, We can formulate;

⇒ x% of 20 = 40

Solve for x;

⇒ x/100 × 20 = 40

⇒ x / 5 = 40

⇒ x = 40 × 5

⇒ x = 200

Thus, There is 200% of number 20 is, 40

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20 POINTS!!!

Rewrite each of the following durations using EIGHTH notes. Write in words and as a fraction:

1 quarter note


1 half note

Answers

Answer:

14 notes overall

Step-by-step explanation:

well 2 are in a quarter and there are four in a half note and there are 8 in a full

so

4 + 2 is 6

and 8+ 6 is 14

so 14 notes overall

Express Using Algebra

What is the length of a rectangle whose perimeter is P, if the width is 6?

Answers

Answer:

(P-12)/2 = L

Step-by-step explanation:

1. Start off with an equation in terms of perimeter

P = (2)(6) + (2)(L)

2. Multiply the two and the six

P = 12+ (2)(L)

3. Move the terms around so only "L" is on one side

(P-12)/2 = L

hope this helped :)

Answer:

l = P/2 - 6

Step-by-step explanation:

The perimeter of a rectangle is 2*length + 2* width, or 2l + 2w.

So, the equation is P = 2l + 2*6. This simplifies to P = 2l + 12.

To isolate l, you subtract 12 from both sides, and divide both sides by 2.

This will look like [tex]l = \frac{P}{2} - 6[/tex].

Find the slope of the line whose equation is 5y = x - 3.

A.-3
B.-3/5
C.1/5
D.5

Answers

The answer is c. 1/5

[tex]\bf 5y=x-3\implies y=\cfrac{x-3}{5}\implies y=\stackrel{\stackrel{m}{\downarrow }}{\cfrac{1}{5}}x-\cfrac{3}{5}\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

!!! I NEED HELP SO I RAISED THE POINTS TO 23!!!! AND WILL GIVE BRAINLIEST !!!!! THANK YOU :)

what is the 52nd term in the sequence:

9, 12.5, 16, 19.5, 23, . . . . . .


Answers

Answer:

182

Step-by-step explanation:

12.5 - 9 = 3.5

3.5 times 52 = 182

I need help! please show work!​

Answers

Answer:

calculate volume by l×b×h

I need help , please show work .

Answers

Answer:

The answer is 600

Step-by-step explanation:

Solve. 1 = –(–w + 6)

Answers

The answer to the problem is W=-5

Answer: w = 7

Step-by-step explanation: In order to solve this you must first multiply the inside of the parentheses by -1:

1 = w - 6

Next, add 6 to both sides:

7 = w

Find the eighth term of the sequence 5,3,-1,-7,-15

Answers

Hope this will help you 2(-15)-1=-31

By using the formula [tex]a_n= -n^2 + n+ 5[/tex]. The eighth term of the sequence 5,3,-1,-7,-15... is -51.

What is the number pattern?

A number pattern is a pattern in a series of numbers that represents the common relationship between the numbers.

We will use the formula to identify the sequence

here, [tex]a_n= -n^2 + n+ 5[/tex]

where n is the number of terms

So,

[tex]a_8= -8^2 + 8+ 5\\\\a_8 = -64 + 13\\\\a_8 =-51[/tex]

Thus, The eighth term of the sequence 5,3,-1,-7,-15... is -51.

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Predict weather the product of 3 and 4/5 is greater than, less then, or equal to 3 explain

Answers

Answer: Less than

Without actually solving this, we can find that the product of 3 and 4/5 will be less than 3. The reason for this is because 4/5 < 1. If we simply would do 3 * 1 we would just get 3. But since we are multiplying it by a number smaller than 1, we will be getting a number less than 3.

Solving this:

4/5 = 0.8

3 * 0.8 = 2.4

The first and forth terms of a proportion are called the means.
Always
Sometimes
Never

Answers

Answer:

Never

Step-by-step explanation:

The first term (1st) and the fourth term (4th) of a proportion are called extreme terms or extremes, and the second term (2nd) and the third term (3rd) are called middle terms or means. Therefore, in a proportion, product of extremes = product of middle terms.

Can you please help me with this and thank you

Answers

Answer:

V = 90 Cubic Feet

Step-by-step explanation:

The volume of the Rectangular Prism is Given as

The product of the Area of Base and The height.

We are given that Area of Base = 18 sq ft

And the Height is 5 ft

Hence as per the formula we have discussed

Volume = 18 x 5

= 90

The volume = 90 Cubic ft

Find the volume of a cylinder that has a radius of 7 and a height of 16.

Answers

To find the volume of a cylinder, start with the formula for the volume of a cylinder.

Volume = [tex]\pi[/tex][tex]r^{2}[/tex][tex]^{h}[/tex]

Notice that our cylinder has a radius of 7 and a height of 16. So we have

([tex]\pi[/tex]) (7)[tex]^{2}[/tex] (16)

Let's start by simplifying the exponents. [tex]7^{2}[/tex] ≈ 49

([tex]\pi[/tex]) (49) (16)

49 × 16 = 784[tex]\pi[/tex][tex]m^{3}[/tex]

We can add a unit so we have 784[tex]\pi[/tex][tex]m^{3}[/tex].

Hey!

----------------------------------------------

Formula: V = πr²h

----------------------------------------------

Solution:

V = (3.14)(7)²(16)

V = (3.14)(49)(16)

V = 784π

----------------------------------------------

Answer:

Volume is equal to 784π

----------------------------------------------

Hope This Helped! Good Luck!


Choose the graph that represents the inequality |x + 1| + 2 < –1

Answers

Answer:

Its graph A on edge. Just took it!

Step-by-step explanation:

The graph that represents the inequality |x + 1| + 2 < –1 is at option 1. Since the equation has no solution (empty set), the graph does not get intersected.

What is the inequality equation?

The inequality equation is the one that is true for some values of the variable. The inequalities may be greater than, less than, greater than or equal, or less than or equal.

Solving the given inequality:

The given inequality equation is

|x + 1| + 2 < –1

⇒ |x + 1| +2 - 2 < –1 -2

⇒ |x + 1|  < –3

So, (x+1) < -3 or (x+1) > -3

⇒ x < -4 or x > -4

This is not possible. So the solution set of the given inequality is empty.

So, the graph is shown for different expressions.

The expressions are considered as

f(x) = |x + 1| + 2 and y < -1

In option 1, the graph shows these two expressions. So, the correct representation for the given inequality is option 1.

Since there is no solution, they do not have any intersecting points in the graph.

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use the substitution method to solve the system of equations
2x + 3y = 13

x = 2

Answers

Final answer:

To solve the system of equations using the substitution method, substitute the value of x into the other equation and solve for y.

Explanation:

To solve the system of equations using the substitution method, we first need to solve one of the equations for one variable and then substitute that expression into the other equation. In this case, the second equation is already solved for x, so we can substitute x = 2 into the first equation:

2(2) + 3y = 13
4 + 3y = 13
3y = 9
y = 3

Therefore, the solution to the system of equations is x = 2 and y = 3.

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The table below represents the function F. The equation that represents this function is

Answers

Hello!

The answer is:

C. [tex]F(x)=2^{x}-1[/tex]

Why?

In order to find the correct option, we need to substitute/evaluate the given values of "x" into each function.

Substituting into the first equation, option A:

[tex]F(x)=3^{x} \\F(3)=3^{3}=27\\F(3)=3^{4}=81[/tex]

... and so.

We can see that the option A is not the correct option since the obtained values do not match with the given values.

Substituting into the second equation, option B:

[tex]F(x)=3x\\F(3)=3*3=9\\F(4)=3*4=12\\[/tex]

... and so.

We can see that the values obtained from the function do not match with the given values, so the option B is not correct.

Substituting into the third equation, option C:

[tex]F(x)=2^{x}-1\\F(3)=2^{3}-1=8-1=7\\F(4)=2^{4}-1=16-1=15\\F(5)=2^{5}-1=32-1=31\\F(7)=2^{7}-1=128-1=127\\F(8)=2^{8}-1=256-1=255\\[/tex]

So, since all the obtained values match with the given values, we can conclude that the correct option is the option C.

Have a nice day!

Answer:

The answer is c

Step-by-step explanation:

Calculate the area of the irregular polygon shown below:
21 square inches
22 square inches
26 square inches
29 square inches
(Worth 10 points)
ASAP

Answers

Answer:

26 square inches

Step-by-step explanation:

To calculate the area of the polygon, find the area of 5*10 = 50. Now subtract the area of each rectangle cut out of the polygon. There are two rectangles of the same size measuring 3 by 4. They have an area of 3*4 = 12.

So 50 - 12 - 12 = 26

Answer:

26 square inches

Step-by-step explanation:

At an assembly 7 out of the first 10 students who entered the gym we're carrying a backpack. Based on this on formation if 700 students were at the assembly how many students could be expected to be carrying a backpack?

Answers

Answer:

490 students have back packs

Step-by-step explanation:

700 / 10 = 70

70* 7 = 490

7 students carrying a backpack out of 10 total students = 7/10

700 students attending divided by 10 students from formation, equals 70

in multiplication, it would be 70 • 10 = 700

do the same to the numerator of the fraction

7 • 70 = 490 students carrying a backpack

so, your final answer would be:

if 700 students are attending this assembly, based o the formation, 490 students would be carrying a backpack

Delia and Beto left for school at the same time.
Delia lives 3/4 mile from school and walks at a pace of
16 minutes per mile. Beto lives 3 1/2 miles from school
and bikes at a pace of 3 minutes per mile. Who will get to
school first?

Answers

Answer:

Beto will reach school first

Step-by-step explanation:

Delia lives 3/4 mile from school, and if she walks at 16 minutes per mile, it would take her

3/4 x 16 = 12 minutes to reach school.

Beto lives 3 1/2 (7/2) miles from school, and if she walks 3 minutes a mile, it would take her

7/2 x 3 = 10.5 minutes to reach school

Hope this helps!

Answer:

Beto reaches school first

Step-by-step explanation:

We are given that Delia lives 3/4 mile from school and walks at a pace of

16 minutes per mile.

So Delia takes [tex] \frac{3}{4} \times 16 = [/tex] 12 minutes to reach school.

While Beto lives 3 1/2 miles from school  and bikes at a pace of 3 minutes per mile.

So Beto takes [tex] \frac{7}{2} \times 3 = [/tex] 10.5 minutes to reach school.

Therefore, Beto reaches school first.

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