Which expression is equivalent to 21 - (-5)?
O A. -21 + 5
O B. 21 + 5
O C. -21 - 5
O D. 21 - 5

Answers

Answer 1
The answer is 21+5. Since there are 2 subraction of a negative it becomes a positive
Answer 2
It’s 21+5 (which is letter B) You turn the two negative signs positive.

Related Questions

∠CAT and ∠TAD is a linear pair. If m∠CAT = 14 and m∠TAD = x+10, find x.
(show work please)

Answers

Answer:

156

Step-by-step explanation:

Since, ∠CAT and ∠TAD is a linear pair.

Therefore,

∠CAT + ∠TAD = 180°

14° + (x + 10)° = 180°

(x + 24)° = 180°

x + 24 = 180

x = 180 - 24

x = 156

what 6.8 into 3 by 4. urgent

Answers

Step-by-step explanation:

5.1 .......... write it fast..........

What is a requirement of adjacent angles?

Answers

Answer:

Step-by-step explanation:

Two angles are Adjacent when they have a common side and a common vertex (corner point) and don't overlap.

33 feet is how many meters? Hint: 1 ft ≈ 0.305 m Round your answer to the nearest tenth. (HELP!)

Answers

Answer:

10.1m

Step-by-step explanation:

1ft = 0.305m

33ft = 33 x 0.305m = 10.065m ≈ 10.1m

33 ft because it’s 33 ft

a triangle has side lengths of (9.7m-6.8m) centimeters, (6.6m+6.5p) centimeters, and (2.2p-6.4n)centimeters. which expression represents the perimeter, in centimeters, of a triangle?

Answers

Answer:

To find the perimeter of a triangle, you would need  first all three side lengths.  

9.7m-6.8m = 2.9, 6.6m+6.5p=7.1, 2.2p-6.4= -4.2. once I added all the sides it was 5.8.

10 friends share six pizzas equally. What fraction of a pizza does each friend get?

Answers

Answer:

10 friend=6 pizza now,

1 friend gets =10÷6

=5÷3

A 3-mi cab ride cost $7.90. A 9-mi cab ride cost $18.70

Answers

Answer:

The 3 mile cab ride includes a basic charge as well as the cost for the distance covered. For a 6 mile trip, the cost ...

Andy was buying
$5 hats and $3
gloves for every
person on his
Christmas list. He
also bought one roll
of wrapping paper
for $2. Let x
represent the
number of people
on his Christmas
list.

Answers

Answer:

5x+3x+2= total

x is total number of people times cost

Answer:

5x+3x+2=total

8x+2=total

Step-by-step explanation:

you add the 5x and 3x and get 8x plus the 1 roll which cost 2 and you have total money spent

The following quadratic equations can be solved by extracting square roots x²=36​

Answers

Answer:

x= 6

Step-by-step explanation:

you can do 6 squared, which is also equal to 6 x 6

Suppose P(C) = 98%; P(D) = 88%; and P(C or D) = 33%.
Find P(C and D).
Can this really be a probability? If not, explain why not.

Answers

Answer:

[tex]P(C\ and\ D) = 153\%[/tex]

Step-by-step explanation:

Given

[tex]P(C) = 98\%[/tex]

[tex]P(D) = 88\%[/tex]

[tex]P(C\ or\ D) = 33\%.[/tex]

Required

[tex]P(C\ and\ D)[/tex]

In probability, the relationship between the given parameters and the required parameter is:

[tex]P(C\ and\ D) = P(C) + P(D) - P(C\ or\ D)[/tex]

Substitute values in the above formula

[tex]P(C\ and\ D) = 98\% + 88\% - 33\%[/tex]

[tex]P(C\ and\ D) = 153\%[/tex]

No, it can't be a probability

Because [tex]P(C\ and\ D) > 100\%[/tex]

An ordinary 52-card deck is thoroughly shuffled. You are dealt four cards. (a) What is the probability that all four cards are sevens. (b) What is the probability that at least one of the cards is a seven. (c) What is the probability that none of them are seven. (d) What is the probability that two out the four cards is a seven

Answers

Answer:

a) The probability of getting a seven is 4/52

b) At least one of the cards is a seven=0.2813

c) The probability that none of them are seven=  0.7187

d) The probability that two out the four cards is a seven= 0.043

Step-by-step explanation:

A deck contains 52 cards containing 4 sets of 13 cards . Each set has a seven card in it. Thus there are 4 seven cards in a deck of 52 cards.

a) The probability of getting a seven is 4/52=0.0769

b) At least one of the cards is a seven=

1- P(no seven)

= 1- 4C0 * 48C4/ 52C4= 1- 0.7187= 0.2813

c) The probability that none of them are seven=4C0 * 48C4/ 52C4=  0.7187

d) The probability that two out the four cards is a seven= First card is seven * second Card is seven * two cards are not seven

= 4/52* 3/51*48/50= 0.0769*0.0588*0.96= 0.043

Simplify. 24/36 divided by 9/27

Answers

The answer for that would be 2

A = {1, 3, 5, 7, 9)
B = {2, 4, 6, 8, 10)
C = {1, 5, 6, 7, 9)
AN(BNC) =
(1, 3, 5, 6, 7, 9)
O {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
OO

Answers

A={1,3,5,7,9} bananafish

The intersection A n(B n C) is an empty set: {∅}

How to get the intersection between the 3 sets?

For two sets A and B.

A n B is defined as the intersection between A and B, so it is the set of common elements between A and B.

Here we have:

A = {1, 3, 5, 7, 9}B = {2, 4, 6, 8, 10}C = {1, 5, 6, 7, 9}

Then:

A n (B n C)

First, we have:

B n C = {6}

6 is the only common element between B and C.

And 6 does not belong to A, then:

A n (B n C) = {∅}

Which is an empty set.

If you want to learn more about sets:

https://brainly.com/question/2166579

#SPJ5

Determine the largest integer value of x in the solution of the following inequality. -5X - 9 > 13​

Answers

Answer:

X<-4.5

Step-by-step explanation:

firstly group like terms ,You divide both side by -5 and the answer was -4.5

Suppose you travel 300 miles on a highway for 6 hours.At what rate did you travel?use the distance formula d=rt and solve for r.

Answers

Answer:

50 mph

Step-by-step explanation:

Graph the line with slope 8 and y-intercept −8.

Answers

To create the slope 8, you would have to do the rise over run:8/1. which means u go up 8 units and to the side one unit and you keep doing that. And since the y-intercept is -8, then you start your first point at -8 and continue to go up.

The graph is attached below:

What is graph?

Graphing basic functions like linear functions and quadratic functions is easy. The basic idea of graphing functions is

Identifying the shape if possible. For example, if it is a linear function of the form f(x) = ax + b, then its graph would be a line; if it is a quadratic function of the form f(x) = ax2 + bx + c, then its a parabola.

finding some points on it, by substituting some random values of x and finding the corresponding values of y by substituting each value into the function.

For graphing quadratic function also, we can find some random points on it. But this may not give a perfect U-shaped curve. This is because, to get a perfect U-shaped curve, we need where the curve is turning. i.e., we have to find its vertex. After finding the vertex, we can find two or three random points on each side of the vertex and they would help in graphing the function.

Given:

slope= 8

y- intercept = -8

So, the equation can be

y= mx+ c

y= 8x - 8

Learn more about graph here:

https://brainly.com/question/16608196

#SPJ2

Given vertex form, how do you think changing the value
of "h" will transform the parent function (y = x²).

Answers

I did a x y to the point 1.2 record is a little too long to get it to = (y=x) h to go back

Deon bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $250 less than the desktop. He paid for the computers using
two different financing plans. For the desktop the interest rate was 9% per year, and for the laptop it was 6% per year. The total finance charges for one year
were $300. How much did each computer cost before finance charges?

Answers

Answer:

300

Step-by-step explanation:

Let x = cost of desktop computer; then x - 250 = cost of laptop computer

converting % to decimals, 9% = 0.09 and 6% = 0.06

Then, 0.09x + (x - 250)0.06 = $300

0.09x + 0.06x - 15 = $300

0.15x = $315

x = $2100

then x - 250 = $1850

Proof: $2100•0.09 + 1850•0.06 = $189 + $111 = $300

which ordered pair is not a solution to this system?
x+y > 3
x + 2y > 5

Answers

Answer:2,2

Step-by-step explanation:

I guess

3x+4=17x-10 what is x

Answers

Answer:

[tex]x=1[/tex]

Step-by-step explanation:

[tex]3x+4=17x-10[/tex]

Subtract 4 from both sides:

[tex]3x+4-4=17x-10-4[/tex]

[tex]3x=17x-14[/tex]

Subtract 17x from both sides:

[tex]3x-17x=17x-14-17x[/tex]

[tex]-14x=-14[/tex]

Divide both sides by -14:

[tex]\frac{-14x}{-14}=\frac{-14}{-14}[/tex]

[tex]x=1[/tex]

Answer:

1

Step-by-step explanation:

Step 1:

3x + 4 = 17x - 10

Step 2:

4 = 14x + 10

Step 3:

14 = 14x

Answer:

x = 1

Hope This Helps :)

Please help I can’t afford to fail this class :(

Answers

The answer I believe would be “B”; “48”

The graph of a function must be linear if it has what characteristic?
It passes through the origin. It crosses the x-axis more than once.
It crosses the y-axis exactly once
It has a constant slope.

Answers

Answer:

  It has a constant slope.

Step-by-step explanation:

A linear function graphs as a straight line. It will have a constant rate of change.

It has a constant slope.

Answer:

D. It has a constant slope on Edg2020

Step-by-step explanation:

Hope this helps!!! Have a great day!!!

Solve the equation x-3=23
X=

Answers

Answer:

26

Step-by-step explanation:

26 - 3 = 23

hope this helps

Answer:

x = 26

Step-by-step explanation:

x-3=23

Add 3 to each side

x-3+3=23+3

x = 26

What is -20.3-14.34?

Answers

Answer:

-34.64

Step-by-step explanation:

-20.3-14.34

-34.64

By how much does the outlier in the following data set increase the range of the data set?
{59, 70, 63, 46, 60, 38, 60, 51, 48, 85, 66, 55, 236}

Answers

To find the range, subtract the smallest from the biggest number.

The outlier is most commonly the biggest or smallest number. Obviously it is 236 in this situation.

To find how much the outlier increases the range, you need to find out the range WITH and WITHOUT the outlier.

Without the outlier: 39

With the outlier: 190

Then you subtract 190 - 39 because you are trying to find out how much MORE RANGE the outlier makes.

The answer is 151.

THEREFORE, The outlier increases the range by 151.

Which coordinate pair represents the reflection of (-4,6)

Answers

The answer is C because when it reflects the 4 stays negative and the 6 because negative because it reflected on the negative side

Hope this helped! :))

The matrix below represents the solution to a system of equations.

Which of the following describes the solution?

Answers

Answer: C

Step-by-step explanation:

What is the solution of the following quadratic inequality?
XA – 18x²=-64
0 (-3.623, -2.208) U (2.208, 3.623)
[-3.623, -2.208] U [2.208, 3.623]
0 (-00, -3.623) U (-2.208, 2.208) U (3.623, co)
(-00, -3.623] U-2.208, 2.208] U [3.623, có)
o

Answers

Answer:

Answer D

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

ddddddddddddddddddddd

Solve the system using elimination.
7x + 10y = 27
X-10y = -19
The solution is
(Simplify your answer. Type an ordered pair.)

Answers

The solution is (1,2)

Step-by-step explanation:

 7x + 10y = 27

 x - 10y = -19                                                                                                                    +--------------------

8x = 8

Divide by 8 on both sides

x = 1

To find y substitute any of the equations to 1

7(1) + 10y = 27

7 + 10y = 27

Substract 7 from both sides

10y = 20

Divide by 10

y = 2

4/9(3/8x-27/16)=13/4

Answers

Answer:

x=24

Step-by-step explanation:

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