Mathematics High School

find the perimeter of the triangle 8cm 7cm 5cm

Answers

Answer 1

Answer:

20 cm

Step-by-step explanation:

add 8+7+5 = 20 cm as the perimeter

Answer 2

Answer:

perimeter = 8 + 7 + 5 = 20cm

Step-by-step explanation:

sum of all sides = perimeter...

Related Questions

what is 8.154 to 1 decimal place?

Answers

What is 8.154 rounded to 2 decimal places?" is the same as asking, "What is 8.154 rounded to two decimal points?" or "How to round 8.154 to two decimal places."

The main point is that you want to round 8.154 to two digits or places after the decimal point. Thus, we want to eliminate the last digit in 8.154. To eliminate the last digit in 8.154, we use the following Two Decimal Places Rules to get the answer:

Two Decimal Places Rule #1: If the last digit in 8.154 is less than 5, then remove the last digit.

Two Decimal Places Rule #2: If the last digit in 8.154 is 5 or more and the second to the last digit in 8.154 is less than 9, then remove the last digit and add 1 to the second to the last digit.

The ratio of a:b is 3:4.
the ratio of b:c is 5:3.
work out the ratio of a:c

Answers

I think the best way to solve this is to convert the ratios into fractions and then subtract from there :)

Jason needs to run 30 laps before basketball practice. His coach makes a deal with the team that on Friday’s they only need to complete 5/6 of that.

Write an expression or equation to represent the number of laps to complete on Friday.

Answers

Answer:

a little bit less than 30

Step-by-step explanation:

60 people were asked the colour of their car and the pictogram shows the results.

a) 16 cars are red. Complete the key.

b) How many cars are silver?

KEY: One circle represents __ cars

Red = 4 circles
White = 3 circles and a half
Silver = 5 circles and 3/4
Grey = 1 circle and 3/4

Answers

The number of silver cars in the pictogram is 23.

How many cars are silver?

If 16 cars are red, then, each circle represents 4 cars.

If each circle represents 4 cars, then, each quarter of a circle represents 1 car

White car = 4 + 4 + 4 + 2

= 14 cars

Silver = 4 + 4 + 4 + 4 + 4 + 3

= 23 cars

Grey = 4 + 3

= 7 cars

Total cars = red + white + silver + grey

= 16 + 14 + 23 + 7

= 60 cars

It can therefore be concluded that silver cars is 23 in number.

Answers

Answer:

Reference Point

Step-by-step explanation:

The answer is reference point. This is because reference point is used to determine if an object is in motion or if it has changed is direction.

Thus, reference point has to be a value of zero for us to use it to determine if an object has moved.

The vertices of parallelogram DEFG are E(-1,4) F(5,6) and G (8,0). Find the coordinates of D

Answers

Answer:

The coordinates of D are (2,-2)

Step-by-step explanation:

The coordinates of point D are (2,-2)

The coordinates of the parallelogram are given as:

E(-1,4), F(5,6) and G (8,0)

For the coordinates to represent a parallelogram, the following must be true

[tex]x_D - x_E = x_G - x_F[/tex]

[tex]y_D - y_E = y_G - y_F[/tex]

So, the equations become

[tex]x_D -(-1) =8-5[/tex] and

[tex]y_D -4 =0-6[/tex]

Solve for x and y in the above equations

[tex]x_D -(-1) =8-5[/tex]

[tex]x_D +1 = 3[/tex]

[tex]x_D = 3-1[/tex]

[tex]x_D = 2[/tex]

[tex]y_D -4 =0-6[/tex]

[tex]y_D - 4 = -6[/tex]

[tex]y_D = 4-6[/tex]

[tex]y_D =-2[/tex]

Hence, the coordinates of point D are (2,-2)

Answers

Step-by-step explanation:

be62vw6vwebe6e6be6ev6eb6eb6eb7eb7eebe73

at a basketball game, 18% were supporting the visiting team. if 2624 people attending supported the home team, what was the total number of people attending the game?

Answers

Answer:

2624= 82%

18%= 2624/82=32. 32*18=576

Step-by-step explanation:

If 2624 people attending supported the home team, the total number

of people attending the game will be 3200.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

The usage of percentages is widespread and diverse. For instance, numerous data in the media, bank interest rates, retail discounts, and inflation rates are all reported as percentages. For comprehending the financial elements of daily life, percentages are crucial.

It is given that 18% were supporting the visiting team and 2624 people attending supported the home team as a result 82 % were supporting the home team,

Let the total number of people attending the game be x.

⇒82% of x = 2624

⇒(82/100)×x= 2624

⇒x= (2624×100)÷82

⇒x=3200

Hence, if 2624 people attending supported the home team, the total number of people attending the game will be 3200.

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What will be true about the sixth term in the pattern below?

1, 2, 4, 8, ...

It will be an even number greater than 16.

It will be an even number greater than 32.

It will be an odd number greater than 16.

It will be an odd number greater than 32.

Answers

it will be an even number greater than 16

Match each problem to the inequality that models it. Once choice will be used twice *

Answers

Answer:

yes

Step-by-step explanation:

1 sentences- c

2 sentence - b

3 sentence- d

4 sentence- a

5 sentence- c

6. The scatter plot shows the median household income, x, in thousands of dollars, and

the number of adults per 1,000 people with bachelor's degrees, y, of 50 U.S. states.

The line y = 4.08x + 63.13 is a good fit for this data.

Answers

The line y = 4.08x + 63.13 is a good fit for this data because it accurately represents the positive relationship between median household income and the number of adults with bachelor's degrees in the 50 U.S. states.

Given that a scatter plot of median household income x and the number of adults per 1,000 people with bachelor's degrees y for 50 U.S. states. The line y = 4.08x + 63.13 is suggested to be a good fit for this data.

To understand why this line is a good fit, to consider its equation. In this case, y represents the number of adults per 1,000 people with bachelor's degrees, and x represents the median household income in thousands of dollars.

The equation of the line is y = 4.08x + 63.13. This means that for every increase of $1,000 in median household income, the number of adults with bachelor's degrees increases by 4.08 per 1,000 people. The intercept of the line is 63.13, which represents the number of adults with bachelor's degrees when the median household income is $0.

By analyzing the scatter plot, we can see that the points are roughly linear and show a positive correlation between median household income and the number of adults with bachelor's degrees. The line represents the best fit for this data because it minimizes the distance between the line and the points on the scatter plot.

Hence, the line y = 4.08x + 63.13 is a good fit for this data because it accurately represents the positive relationship between median household income and the number of adults with bachelor's degrees in the 50 U.S. states.

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Change the following to pounds:
a) 10 kg
b) 25 kg
What is 10kg as punds

Answers

Answer:

22.046 lbs

Step-by-step explanation:

10kg is rounded to 22 pounds

Answer:

a) 10 kg = 22.046 lb

b)25 kg = 55.116 lb

Step-by-step explanation:

all you need to do to convert is to multiply the number of kilograms by 2.2 to get the number of pounds

A retailer marks up the price of a coffee mug from $6.25 to $8.77. By what percent did the price increase? Round to
two decimal places
a. 28.73%
b. 39.68%
40.32%
45.97%
C
d

Answers

Answer:

Step-by-step explanation:

edg 20/21

If a store raises a coffee mug's price from $6.25 to $8.77. The price increase was 40.32%. Option C is correct.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

The usage of percentages is widespread and diverse. For instance, numerous data in the media, bank interest rates, retail discounts, and inflation rates are all reported as percentages. For comprehending the financial elements of daily life, percentages are crucial.

It is given that, A retailer marks up the price of a coffee mug from $6.25 to $8.77.

We have to find the percentage by which the price increase,

% increment = New rate - old rate / old rate × 100

% increment =(8.77 - 6.25)× 100

% increment =40.32%

Thus, if a store raises a coffee mug's price from $6.25 to $8.77. The price increase was 40.32%. Option C is correct.

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A 381 foot cable runs from the top of a radio tower to a skate in the ground. If it hits the ground 167 feet from the base of the tower , what is the angle of elevation that is makes with the ground?

Answers

Answer:

64°

Step-by-step explanation:

Using Pythagoras rule :

Cosθ = adjacent / hypotenus

Adjacent = 167

Hypotenus = 381

Cosθ = 167 / 381

Cosθ = 0.4383202

θ = Cos^-1(0.4383202)

= 64.003

Hence, angle of elevation = 64°

A rectangular football field is 6x meters long and 3x meters wide. If its
perimeter is 360 meters, then the value of x is

Answers

Answer:dgrgfhtbsdvdsvs

Step-by-step explanation:dssfdfd

Answer:

x = 20

Step-by-step explanation:

perimeter = 2(width) + 2(length)

2(6x) + 2(3x) = 360

12x + 6x = 360

18x = 360

divide both sides by 18

x = 20

find the area of an equilateral triangle of side 12 cm

Answers

Step-by-step explanation:

root 3 by 4a²

root3/4*(12)²

36root3

Answer:

A≈62.35cm²

Step-by-step explanation:

A=3

4a2=3

4·122≈62.35383cm²

Please help with this right triangle problem

Answers

Given:

The figure of a right angle triangle.

To find:

The measure of side AB.

Solution:

In a right angle triangle,

[tex]\cos \theta=\dfrac{Adjacent}{Hypotenuse}[/tex]

In the given triangle,

[tex]\cos B=\dfrac{BC}{AB}[/tex]

[tex]\cos (20^\circ)=\dfrac{7}{AB}[/tex]

[tex]\cos (20^\circ)AB=7[/tex]

[tex]AB=\dfrac{7}{\cos (20^\circ)}[/tex]

On further simplification, we get

[tex]AB=\dfrac{7}{0.93969}[/tex]

[tex]AB=7.449265[/tex]

[tex]AB\approx 7.45[/tex]

Therefore, the measure of AB is 7.45 units.

Five integers have a mean of 8. The
integers are 7, 3, 10, 13, X. Find the
value of x.

Answers

Mean = (7+3+10+13+x)/5

(7+3+10+13+x)/5 = 8

(7+3+10+13+x) = 40
x = 40-7-3-10-13 =7

someone please show me the steps on how to solve this.

Answers

Answer:

1. BC=26

Step-by-step explanation:

1• because it is an equiangular triangle (i guess that would be low I describe it), all of the sides & angles are =.

I’m not 100%sure on number two but i hope this helps fir number one

Help me please !!!

And thank you

Answers

Answer:

804.4

Step-by-step explanation:

the formula for the volume of a cube is the side length cubed,

so:

(9.3)(9.3)(9.3) = 804.357

then round it to 804.4

hope this helped!

Can y’all help with this :)))))

Answers

There’s a pattern to this and I’ll explain in the comments if you want to know or can’t figure it out :)

1.) 27/x^3

2.) a^8/b^12

3.) 7^36/81 OR 13,841,287,201/81

4.) 256m^20/n^4

5.) x^6y^6

6.) 64k^4/k^6

7.) 1,000a^9b^6/a^6b^9

8.) 81x^21/625

9.) 2304/x^16y^12

10.) x^7z^14/y^21

11.) 7,776k^5

12.) x^24y^24/4,096

Hope it’s all helped

a polygon has n sides. Two of its sides are right angle while the remaining each side is 144.find n

Answers

Use the formula that states that the sum of the angles of an n-sided polygon is given by
S=(n−2)180
0
........(1)

Since we are given that the two angles are right angles and each of the remaining angles is 144
0
, therefore, the sum is:

S=90
0
+90
0
+(n−2)144
0
.........(2)

Therefore setting (2) equal to (1) we get

(n−2)180
0
=90
0
+90
0
+(n−2)144
0

⇒(n−2)180
0
−(n−2)144
0
=180
0

⇒(n−2)(180
0
−144
0
)=180
0

⇒(n−2)(36
0
)=180
0

⇒n−2=
36
180

⇒n−2=5
⇒n=5+2=7

Hence, the polygon has 7 sides.

The ratio of men to women working for a company is 5 to 6. If there are 198 employees total, how many women work for the company?

Answers

Answer: 110 Women !

Step-by-step explanation:

Call their numbers 4x to 5x.

Since there are a total of 198 people,

4x + 5x = 198

9x = 198

x = 22

so that there are

88 men and 110 women.

Find the unknown side of the triangle below.
9 in
18.8 in
15 in
8 in

Answers

It’s 9
If you do a^2+b^2=c^2 which basically means 8+x=17, x would add up with 8 to 17. So that’s why it’s 9 :)

Answer:

its actually 15 inches, cause if you bring the bottom line up and compare it to the 17 line its a smidge shorter so go with the largests number the less then 17. theres proof for the quiz itself

Step-by-step explanation:

over which of the following approximate intervals is the water level decreasing
pls help !

Answers

Answer:

B and C

Step-by-step explanation:

It is going down

I NEED THIS FOR A TEST PLZ HELP!!!
Triangle ABC has been dilated from center D.
If the length of segment BC = x, which is the
length of segment
ST?
A. 2x
B. 3x
C. 4x
D. 5x

Answers

Answer:

Step-by-step explanation:

Answer:

A. 2x is correct.

Step-by-step explanation:

Finding the measure of the segment BC and ST by the Distance formula: B (5, 7), C (8, 8), S (1, 11), T (7, 13).

BC = √(8-5)² + (8 - 7)²

BC = √10

ST = √( 7 - 1)² + ( 13 - 11)²

ST = 2√10

Scale Factor = Image/ Pre-image = ST/BC = 2√10/√10 = 2

This means that the image, ST, is twice as large as the pre-image BC.

name each of the shapes below

Answers

1Wht2

2The3

3Frick4

4Is5

5that6

The name of the shape in the figure is a hexagon.

What are polygons?

A polygon is often a plane figure in geometry that is enclosed by a closed chain made up of a finite number of straight-line segments that end in a loop. The spots where two of these segments meet are referred to as the polygon's vertices (plural: vertices) or corners. These segments are known as its edges or sides.

Given a shape,

the shape is a polygon,

to name a polygon first count the number of sides of the figure,

as we count there are 6 sides for the shape,

There are some specific names for the shapes according to their number of sides, like

Number of Sides Name

3 Triangle

4 Quadrilateral

5 Pentagon

6 Hexagon

The name for the shape is Hexagon.

Hence the name of the figure is Hexagon.

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Please answer the correctly in the picture below 8TH GRADE MATHENMATICS?!

Answers

Answer:

B 3.5

Step-by-step explanation:

Hope it Helps!

3.5

Hope it helps my freind

Help please look at the image
Thanks

Answers

Answer: Option 1

Reason: Math

Which is the graph of y = 3x + 1?

Answers

Answer:

X dot on graph (-0.333,0) Y dot on graph (0,1)

Step-by-step explanation:

It intercepts on the X line on (-0.33,0)

It intercepts on the Y line on (0,1)

Answer:

Hi so the graph will look like this

Hope This Helps!

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