Mathematics Middle School

A right triangle has legs of 30m and 40m. What is the PERIMETER of the triangle?

choices:
A.) 120m

B.) 70m

C.) 1200m

D.) 50m

Answers

Answer 1

Answer:

A

Step-by-step explanation:

We know that we are dealing with a right triangle. Look at the legs given to us, 30m and 40m. That looks familiar doesn't it? In fact, this quite resembles the 3-4-5 special right triangle.

We can simply scale the legs by 10 to find the last side of the triangle.

[tex]3*10=30\\4*10=40[/tex]

and therefore, the last side of the right triangle must be:

[tex]5*10=50[/tex]

Great! Now we have all the sides of the right triangle. We just have to add them up:

[tex]30+40+50=120[/tex]

Therefore, the perimeter of the triangle is 120m. A.

I hope this helps! Let me know if you have any questions :)

Related Questions

The scale on this drawing is 2 in : 5 ft. Based on this, how many inches long and wide will the kitchen be?

Answers

Answer:

Its A, no question

Determine whether each element of the set {7,8,9} makes the inequality 2x−3<15 true.

Answers

Answer: 7- true 8- true 9- false

Step-by-step explanation:

-7, -8

Plug in the values, if they are less than 15, then it is true:)

Which value is equivalent to the expression 2 to the 3rd power + 3 to the 4th power??

a) 18
b) 72
c) 78
d) 89

Answers

89 is the correct answer

Answer:

89

Step-by-step explanation:

2^3 + 3^4

=8 + 3^4

=8 + 81

=89

What do you know about the angles of a right triangle?
A. only one angle is a right angle and the other two are obtuse
B. one or more angles must be right angles
C. All angles might be right angles.
D. only one angle is a right angle and the other two are acute

Answers

ANSWER:

D. only one angle is a right angle and the other two are acute

EXPLANATION:

1. Since all angles in a triangle must sum up to 180 degrees, there may only be one angle of 90 degrees or more.

2. D is correct on Edge.

Can I get help? And plzzzz give steps to how you found your answer.

Answers

Answer:

C)

Step-by-step explanation:

C is an equation that works in favor of all examples

C) f(x)=4x+1

4(1)+1 = 5

4(3)+1 =13

4(5)+1 = 21

The answer would be C.

The owner of a furniture store orders 6 chairs for every table she orders.
Which of the following equations can be used to find c, the total number of chairs she will order when she
orders t tables?

A. 6c=t
B. t + 6 =c
C. 6t=c
D. c +6=t

Answers

Answer:

A. 6c = t

Step-by-step explanation:

6 c- chairs for each table.for example 3 table, so 6 chairs for each table 3 * 6 = 18.

2. 18 chairs for 3 tables.

The correct answer is b .t+6=c

which angles are adjacent to 8 ? select all that apply

Answers

Answer:

I think 5 and 7 I got that question

Answer:

7 and 5

Step-by-step explanation:

Added together their angles are 180 degrees

25 POINTS!! PRE-ALGEBRA MATH! PLEASE HURRY! I WILL GIVE BRAINLIEST!
Part B: Describe how you can make the line of the best fit. write the approximate slope and y-intercept of the line of best fit. Show your work, including the points that you use to calculate the slope and y-intercept.


(please explain how you got the slope and y-intercept with the numbers from the question if you would like brainliest)

Answers

Answer: We are using a line regression tool to solve the parameters asked in the problem. We can use online tools or that of Excel. According to the tool, the best fit values are

Slope0.3848 ± 0.03956

Y-intercept0.6053 ± 0.6370

X-intercept-1.573

1/Slope2.598

Step-by-step explanation: Best fit lines make sure that the standard deviation at each point is minimum from the best fit line.

Answer:

Step-by-step explanation:

Slope0.3848 ± 0.03956

Y-intercept0.6053 ± 0.6370

X-intercept-1.573

1/Slope2.598

∠A=24∘and ∠B=24∘ What term can be used to describe these two angles?
A. adjacent
B. vertical
C. supplements
D.congruent

Answers

Both angles are the same degree so they would be congruent.

The answer is D. Congruent.

since both of them are the same, it’s congruent, congruent means same... ANSWER IS D. CONGRUENT

Find the mean of 1.3.8.2.6.3

Answers

Answer:

4 + 54k - 4F^1

1.3+8.2+6.3…then divide by 3

which angle is supplementary to 6 ?

Answers

Answer:

[tex] < 3[/tex]

explanation:

Answer:

its the 3rd one 3

Step-by-step explanation:

just answer the question in simple words lol

Answers

Answer:

He should have multiplied 15 tsp by 1 tbsp/3tsp.

Step-by-step explanation:

The tsp labels cancel each other out when one is the numerator and one is the denominator.

15tsp x 1 tbsp/3tsp = 15/3 = 5 tbsp

correct me if I’m wrong but I think it’s 5tbsp

plz help me

The two dot plots below compare the forearm lengths of two groups of schoolchildren:



Based on the visual inspection of the dot plots, which group appears to have the longer average forearm length? (5 points)

a
Group X, because no child in the group has a forearm length longer than 12 inches.

b
Group X, because four children in the group have the least forearm length of 10 inches.

c
Group Y, because a child in the group has the least forearm length of 10 inches.

d
Group Y, because six children have a forearm length longer than 12 inches.

Answers

Answer:

the answer is D sense if you count there more kids with a forearm on 13

Answer:

its D

Step-by-step explanation:

Please anwser correct.

Answers

Answer:

19200

Step-by-step explanation:

cubic inches

Answer solve by cubic inches 19200

Petra jogs 3 miles in 30 minutes. At this rate, how long would it take her to jog 7 miles?

Answers

Answer:

70 minutes

Step-by-step explanation:

if her pace for 1 mile is 10

70 minutes or 1 hour and 10 minutes

Hw help (again)
hope everyone is having a wonderful day <3

Answers

Answer:

The numbers are 8 and 6

Step-by-step explanation:

Let x and y be the two numbers

x+y = 14

x-y = 2

Add the two equations together

x+y = 14

x-y = 2

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

2x +0y = 16

Divide by 2

2x/2 = 16/2

x = 8

Now find y

x+y = 14

8+y =14

Subtract 8 from each side

8+y-8 =14-8

y =6

The numbers are 8 and 6

Answer:

8 and 6

Step-by-step explanation:

What is the volume of the following rectangular prism?

Answers

The volume of a rectangular prism is a measurement of the occupied units of a rectangular prism. ... It is also defined as the number of units used to fill a rectangular prism. The volume of the rectangular prism is equal to the area of the base times its height.
V of rectangular prism formula: L x W (some combine these two and say “area of the base”) x H.
They gave you the “area of the base” as 25/4 is in units squared. So you just need to multiply 25/4 x 8/5 = 200/20 which is 10 units cubed.
If decimals are easier 25/4 = 6.25 and 8/5 = 1.6. So 6.25 x 1.6 = 10 units cubed.

Plz help will be marked BRAINLIEST
Thanks!

Answers

3x = 180-132
3x = 48
X = 16

Regards,
ArmyCee:)

Answer:

x = 16

48 + 132 = 180

Step-by-step explanation:

16 (x) x 3 = 48

x = 16

Hope this helps! Have a wonderful rest of your day!

-kiniwih426

what angles are complementary to each other ?

Answers

Step-by-step explanation:

Complementary Angles :-

When the sum of two angles is 90°, then the angles are known as complementary angles.

Here the complementary angles are angle 3,1

Answer:

the complementary angles are angle 3,1

Step-by-step explanation:

PLS HELP ME
Fine the circumference

Answers

Bgggvhhgfb dgfvvvcfvv

Answer:

2. 153.93804

Step-by-step explanation:

7 squared times pi is 153.93804

Help me please !!!!!!!

Answers

Answer:

3z+9=1-z

collect like terms

3z+z=1-9

4z=-8

divide both sides by 4

z=-4

Answer:

z= -4

Step-by-step explanation:

Thor is 3 miles north and 4 miles west of the camp site. Willow is 2 miles south and 8 miles east of the campsite. How far apart are Willow and Thor?

Answers

3 miles away from each other
3 miles away aparttt

Find Surface area of the prism!!!!! please help me!!!!

Answers

Answer:

should be 104

Step-by-step explanation:

30 + 30 + 10 + 10 + 12 + 12

The answer would be 114

1. Select all the equations that have 2 solutions.
A. (x + 3)2 = 9
B. (x – 5)2 = -5
C.)(x + 2)2 – 6= 0
D. (x – 9)2 + 25 = 0
E. (x + 10)2 = 1
F. (x - 3)2 = 0
G.5 = (x + 1)(x + 1)​

Answers

.....................

ALGEBRA 1!!!! TY!!
1. f(x)+g(x) . Solve it algebraically and then graph the result on the same graph above. (Creating a table for each function might be helpful as well)
2. Is there a way of determining the graph of f(x)+g(x) without solving it algebraically? Explain your thinking below. If you do not notice a pattern then try the combination f(x)=x+2 and g(x)=1.

Answers

Answer:

73

Step-by-step explanation:

The answer is 73 without a doubt

I KINDA NEED HELP WITH THIS ILL GIVE BRAINLIST WHOEVER HAS THE CORRECT ANSWER! THANKS

Answers

Answer: 48

Step-by-step explanation: YOU MULTIPLY 6 AND 8.

I pretty sure it’s 48

$18.75 to $18.60 identify the percent of change as an increase or decrease . then find the percent of change round to the nearest tenth of a percent , if necessary

Answers

Answer:

0.8%

Step-by-step explanation:

There is a decrease in percentage by 0.8%.

What is percentage?

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

The given decimal numbers are $18.75 and $18.60.

We know that, percentage change = (Original price-New price)/Original price ×100

= (18.75-18.60)/18.75 ×100

= 0.15/18.75 ×100

= 0.008×100

= 0.8%

Therefore, there is a decrease in percentage by 0.8%.

To learn more about the percentage visit:

brainly.com/question/24159063.

#SPJ5

QUICK! WHOEVER GETS CORRECT FIRST GETS BRAINLIEST AND 20 POINTS!

What are the dimensions of the base of the pyramid?

8 ft by 6 ft
8 ft by 3 ft
6 ft by 3 ft, 8 ft by 9 ft

Answers

Answer: 24ft squared

Step-by-step explanation:

8x3 = 24

Answer:

8 fit by 3 fit

coz the base is the part which is at the bottom

what is the surface area of the figure? width = 4.2 ft length = 7.8 ft height = 2 ft

Answers

The surface area is 113.52 feet^2
The surface are is 113.52 feet.

helppp plzzzz...also give steps..plz

Answers

Answer:

4.5 cm

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

121.5 pi = 4/3 pi r^3

Divide each side by pi

121.5 = 4/3  r^3

Multiply each side by 3/4

3/4 *121.5 = 3/4 * 4/3  r^3

91.125 = r^3

Take the cube root of each side

(91.125)^ (1/3) = r^3 ^(1/3)

4.5 = r

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