Which set is closed under subtraction?

Answers

Answer 1

Third one is correct

Related Questions

Mr Nicolo goes on a diet. At the start of the diet he weighs 89.2 kg. He wants to weigh 72.5 kg.
After one month he has lost 4.6 kg. How much more does he have to lose?

Answers

Answer: 80.6 kg

Step-by-step explanation:

if the length of the longest side of the rectangle is 20cm find the shaded area to the nearest hundredth PLEASE HELPP !

Answers

Answer:

150pi

Step-by-step explanation:

lets just say the two circles are 10 and 10 in diameter. so, one square is 5 radius. The square is 25pi area. so two are 50pi area. the area of the rectangle is 200, so 150pi

Please tell me if I'm wrong D:

If CBA is similar to EDA , find the value of x.

Answers

Answer:

1.2

Step-by-step explanation:

The value of 'x' is 1.2 if CBA is similar triangle EDA.

What is similar triangle?

Triangles are said to be similar triangle" if they are proportional equality corresponding sides and equal pair of corresponding angles".

According to the question,

∠C =∠E, ∠B=∠D and ∠A=∠A this implies given triangle is inscribed similar right angle triangle.

ΔCBA ≅ ΔEDA [Similar triangle]

Properties of similar triangle: [tex]\frac{CB}{ED} = \frac{BA}{DA}[/tex]

[tex]\frac{6}{7}=\frac{7}{7+x}[/tex]

[tex]6(7+x)=49[/tex]

[tex]42+6x=49[/tex]

[tex]6x=49-42[/tex]

[tex]x= \frac{7}{6}[/tex] [tex]= 1.16666667[/tex] ≈ 1.2

Hence, the value of 'x' is 1.2 if CBA is similar triangle to EDA.

Learn more about similar triangle here

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plz help
use The information provided to answer the following questions

Answers

Part A

By evaluating the derivative with respect to t of the height function h(t),
which is h’(t)=-2t+4,

we can find the turning point of the quadratic graph by solving h’(t)=0.

-2t+4=0
t=2

Therefore, we can know that when t=2, Sally’s potato attains its maximum height, which is
-(2^2)+4(2)+5
=9
Given that Sam’s potato has been 10 unit high, Sam’s potato went higher than Sally’s did.

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

Part B

Note that the for all t where h(t)>0, the potato is still in the air.
So all we need to do is to solve h(t)>0.

-t^2 + 4t + 5 > 0
t^2 - 4t - 5 < 0
(t + 1)(t - 5) < 0
Therefore we get -1 < t < 5.

But t represents time so it can’t be negative.
So the overall solution is 0 < t < 5.
Therefore the total flying time of Sally’s potato is 5 units.

Because the flying time of Sam’s potato is 3.5 units,
Sally’s potato stayed in the air longer.

PLEASE HELP IM ACTUALLY BEGGING U!!

Answers

Answer:

2 to 8

For every two dogs there are eight small dogs

for every large dog there is four small dogs (this is just simplified)

Henry picked 278 pears. He is putting the pears in a boxes that each hold 50 pears how many boxes will be able to fill completely

Answers

Answer:

278 divided by 50 is about 5 and a half so 5 would be your answer because he is completely filling 5 boxes.

2x + 8y = 28
2x + 8y = 29
e?

Answers

Answer:

The question is unclear. what is e?

In exercises 27-30, three vertices of DEFG are given. Find the coordinates of the remaining vertices: D(-2,-4), F(0,7), G(1,0)

Answers

Answer:

[tex]E =[/tex] [tex](-3,3)[/tex]

Step-by-step explanation:

Given

Parallelogram: DEFG

[tex]D(x_1,y_1) = (-2,-4)[/tex]

[tex]F(x_3,y_3) = (0,7)[/tex]

[tex]G(x_3,y_4) = (1,0)[/tex]

Required

Find the coordinates of [tex]E(x_2,y_2)[/tex]

To do this, we make use of mid-point formula which is:

[tex]M = (\frac{x_1+x_3}{2},\frac{y_1+y_3}{2})= (\frac{x_2+x_4}{2},\frac{y_2+y_4}{2})[/tex]

This gives:

[tex](\frac{-2+0}{2},\frac{-4+7}{2})= (\frac{x_2+1}{2},\frac{y_2+0}{2})[/tex]

[tex](\frac{-2}{2},\frac{3}{2})= (\frac{x_2+1}{2},\frac{y_2+0}{2})[/tex]

Multiply through by 2

[tex]2 * (\frac{-2}{2},\frac{3}{2})= (\frac{x_2+1}{2},\frac{y_2+0}{2})*2[/tex]

[tex](-2,3) = (x_2+1,y_2+0)[/tex]

[tex](-2,3) = (x_2+1,y_2)[/tex]

By comparison:

[tex]-2 = x_2 + 1[/tex] and [tex]3= y_2[/tex]

So, we have:

[tex]-2-1=x_2[/tex] and [tex]3= y_2[/tex]

[tex]-3 = x_2[/tex] and [tex]3 = y_2[/tex]

This gives:

[tex]x_2 = -3[/tex] and [tex]y_2 =3[/tex]

Hence, the 4th coordinate is: [tex](-3,3)[/tex]

Solve the equation. Check your solution and show all your work.

very confused about this and how to execute it to be honest

Answers

Answer:

t = 19 1/4

Step-by-step explanation:

24 1/2 = t + 5 1/4

49/2 = t + 21/4

t + 21/4 = 49/2

t = 49/2 - 21/4

t = 98/4 - 21/4

t = 77/4

t = 19 1/4

24 1/2 = 24.5, 5 1/4 = 5.25

24.5 = t + 5.25
subtract 5.25 from both sides
19.25 = t

19.25 = 19 1/4

In PITI what does P stand for?
O A. Principal
O B. Prepayment
O C. Payment
O D. Penalty

Answers

Answer:

O A. Principal

Step-by-step explanation:

happy to help ya :)

It’s A. Pirncipal :) lol

9/14 decimal rounded to the nearest hundredth

Answers

Answer:

It's 0.64 you really couldn't just look this up?

Step-by-step explanation:

just put 9 divided by 14 in your calculater and round

Pleaseee helpp answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

In a parallelogram AO and OC are equal. Therefore you should set up the equation 3x-4=8. When you add 4 to both sides you get 3x=12. When you divide both sides by 3 you get x=4

Help plzz and It's continue of math

Homework: Compound Probability (Without Replacement)

2.) There are three nickels, four dimes, and four quarters in your pocket. You randomly pick three coins and place them on a counter. The first coin is a nickel, the second is a dime, and the third is a quarter.
3/110, 8/165, 1/64, 10/273

3.) A box of chocolates contains four milk chocolates and six dark chocolates. You randomly pick a chocolate and eat it. Then you randomly pick another piece. The first piece is milk chocolate and the second piece is dark chocolate.
4/15, 5/18, 5/22, 3/110

Answers

Answer:

For number 2: 8/165

Step-by-step explanation:

The total number of coins = 11 ( 3 + 4 + 4 = 11).

The probability of picking a nickel first = 3/11 ( 4 nickels out of 11 total).

The probability of picking a dime second = 4/10 = 2/5 ( 3 dimes out of 10 coins left).

The probability of picking the third coin as a quarter = 4/9 ( 3 quarters out of 9 coins left).

I don't know the other problem, sorry.

Answer:

2) 8/165

3) 4/15

Step-by-step explanation:

2) P(N,D,Q) = 3/11 x 4/10 x 4/9

3) P(M,D) = 4/10 x 6/9

need help................

Answers

827537517172763 kahvxjx

Maggie has $15.00 and will begin earning an allowance of $10.00 per week. Jess has $5.00 and will begin earning an allowance of $15.00
per week.

When will maggie and jess have the same amount of money and how much money will they have?

PLEASE HELP

Answers

the answer is b

maggie originally had $15.00 so her $10.00 allowance times two weeks allowance equals $35
jess originally had $5.00 so his $15.00 allowance times 2 weeks equals 35

4 (4b + 3) + 2b = 3 (b - 11)

Answers

Step-by-step explanation:

4 (4b + 3) + 2b = 3 (b - 11)

16b+12+2b=3b-11

16b+2b-3b=-11-12

15b=-23

b=-23/15

Answer:

Step-by-step explanation:

B= -3

Do 4(4b + 3) first than the answer I get from that equation you

16b + 12 2b= 3(b-11)

Combine like terms

Distribute

Subtract

from both sides of the equation

Simplify

Subtract

from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Pleasee helpp answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!

Answers

Answer:

x = 67º

Step-by-step explanation:

the sum of two angles on the same side = 180º so

x + 113º = 180º subtract 113º from both sides

x = 67º

the crowd at a sporting event is estimated to be 3000 people. the exact attendance is 2486 people. what is the percent error? pls help :)

Answers

Answer:

%error is the difference between the expected and actual 3000-2486=514 514/3000= 17.33% error

Given isosceles ABC, median BD to base AC. Prove ADB=CDB. AB=, AD=, BD=, ADB=
PLEASE GIVE IN A STATEMENT REASON

Answers

Answer:

1. AB=CB def of isosceles triangle

2. AD=CD DEF of median

3. BD=DB reflexive property

4. ADB=CDB SSS

Step-by-step explanation:

ummmm its just the right answer trust

Answer: 102

Step-by-step explanation: math

Carson drew a line perpendicular to the x-axis through (7,-3). What is its equation and its slope?

Answers

Answer:

equation is x = 7

slope is undefined

Step-by-step explanation:

Answer:

perpendicular to the x-axis means a vertical line. So, all of its points have x-coordinate of 7

The slope of vertical lines is undefined.

Step-by-step explanation:

Find AE if AB=12, AC=16, and ED=5.

Answers

Answer:

the ratio is 12:16=3/4

So AE:5+AE=3/4

4AE=15+3AE

AE=15

Step-by-step explanation:

The length of the line segment AE is 15 units.

What is a triangle?

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points.

Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

We know, In a triangle if one segment is parallel to one side of a triangle divides the other two sides in the ratio of their corresponding lengths.

Given, AB = 12, AC = 16 and ED = 5, hence BC = AC - AB = 4.

Therefore, AB/BC = AE/ED.

12/4 = AE/5.

4AE = 60.

AE = 15 units.

learn more about triangles here :

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PLS HELPP I NEED TO KNOW

Answers

The answer is angle B is congruent to angle D

I’m pretty sure atleast

Let f(x) = -x + 3
Find f(2)

f(3)=

Answers

Answer:

Step-by-step explanation:

f(2) = -2+3

help fast please!!!!

Answers

Answer:

OK this is easy the answer is r=2.4

Step-by-step explanation:

so what you would do is simply add 3.1 and 1.7to get 4.8

then you would divide 4.8 by 2 and get r=2.4

Is a 20% markup equal to a 20% markdown

Answers

Answer:

Step-by-step explanation:

Answer:

no because markup is going up/ increasing and markdown is going down (decreasing)

Step-by-step explanation:

Find the measure of the indicated angle to the nearest degree
A) 18°
C) 48°
B) 42°
D) 26°

Answers

Answer:

The answer is option C

Step-by-step explanation:

To find the indicated angle we use sine

sin ∅ = opposite / hypotenuse

From the question

The opposite is 37

The hypotenuse is 41

So we have

sin ? = 37/41

? = sin-¹ 37/41

? = 64.4805

? = 64° to the nearest degree

A rocket is traveling 4,000 miles per hour. How much time in hours will it take the rocket to travel a distance of 84,000 miles?

Answers

Answer:

21 hours

Step-by-step explanation:

84,000 = 4,000x, x = hours

84,000 ÷ 4,000 = x

x = 21

good luck, i hope this helps :)

Answer:

84000/4000=21 hours

Step-by-step explanation:

Find the measure of

Answers

Answer:

19 degrees.

Step-by-step explanation:

First solve the angles in the top triangle:

FHG = 180 - 135 = 45 (angles on a straight line = 180)

FGH = 180 - 105 = 75 (angles on a straight line = 180)

Using these we get HFG = 180 - 45 - 75 = 60 (angles in a triangle = 180)

Then because HFG is directly opposite DFC on the crossed lines, we know they are equal: DFC = 60

FDC = 180 - 119 = 61 (anges on a straight line = 180)

Now if we label ABC (the target angle) as x then we known ACB = 180 - 40 - x.

With this we know FCD = 180 - ACB = 180 - (180 - 40 - x) = 40 + x (angles on a straight line).

Finally using the FDC triangle we have 40 + x + 60 + 61 = 180 so x = 180 - 40 - 60 - 61 = 19 degrees.

HELP ME PLZZ

what is the slope of this line?

Answers

Answer:

4/5

Step-by-step explanation:

I believe 4/5 Up 4 over 5

please help me!! asap!! thank youuuu!

Answers

Answer:

Step-by-step explanation:

4/4 = 1

Answer: D.

Explanation: 4/4=1

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