What expression is equivalent to 9-(-12)

Answers

Answer 1

Answer:

9 + 12

Step-by-step explanation:

9 - (-12)

Subtracting a negative is like adding

9 + 12

21

Answer 2

9-(-12) [ - and - became + ]

9 + 12

9 + 12 = 21


Related Questions

At the beginning of March, a store bought a leather couch at a cost of $960.70 and marked it up 20%. At the end of the month, the leather couch had not sold, so the store marked it down 25%. What was the discounted price? Submit​

Answers

Answer: $864.63

Step-by-step explanation:

First find the original price. Write 20% as the decimal 0.20 before using it in the equation.

price

= cost+mark-up

= 960.70+0.20×960.70

= 960.70+192.14

= 1,152.84

The original price was $1,152.84.

Now find the discount price. Write 25% as the decimal 0.25 before using it in the equation.

discount price

= original price–discount

= 1,152.84–0.25×1,152.84

= 1,152.84–288.21

= 864.63

The discount price was $864.63.

What is the Standard Deviation of the following set of data?
14, 22, 18, 12, 14, 8, 4, 12, 32, 12

Answers

Answer:

34

Step-by-step explanation:

34 because i beleive so

HELLLPPP Multiply. Write your answer in scientific notation. 6 (2 x 10^)(1 x 10​

Answers

Answer:

[tex](2 \times {10}^{4} )(1 \times 10 ^{6} ) \\ = 2 \times {10}^{10} [/tex]

I hope I helped you^_^

Answer:

2×10^10

Step-by-step explanation:

Solve the simultaneous equations. to. 3 significant figures.
3x^2 + y^2 = 20
2x + y =3​

Answers

Answer:

check explanation

Step-by-step explanation:

in eqn 2,

y = 3 - 2x

substitute for it in eqn 1

3x² + y² = 20

3x² + (3 - 2x)² = 20

3x² + 9 - 12x + 4x² = 20

Group like terms;

3x² + 4x² - 12x = 20 -9

7x² - 12x = 11

x(7x - 12) = 11

x = 11,

OR

7x - 12 = 11

7x = 11 + 12

7x = 23

x = 23/7

x = 3.286

To get y, substitute for x in eqn 2

WHEN x = 11,

y = 3 - 2(11)

y = 3 - 22

y = -19

WHEN x = 3.286

y = 3 - 2(3.386)

y = -3.772

is the mistake one two three or is their no mistake

Answers

Answer:

the mistake is that to "remove" the 1/2 on the left you would have to multiply by 2 (or divide by 1/2 but no one does that)

the result would be that 2h-4 = 10  should actually be 2h-4 = 20

Step-by-step explanation:

Which of the following set of angles could be the measurements of a triangle

The source of this question is on learning farm 7th grade

Answers

A right angle and a 70 degree angle

11. Make Sense and Persevere The sum of four
consecutive integers is –18. What is the greatest
of these integers?

Answers

Answer:

-3

Step-by-step explanation:

4n+ 6 = -18

4n=-24

n = -6

-6,-5,-4,-3

largest is -3

Answer:

[tex]\displaystyle -3[/tex]

Step-by-step explanation:

[tex]\displaystyle -18 = 6 + 4n → \frac{-24}{4} = \frac{4n}{4} \\ \\ -6 = n \\ \\ \\ -6, -5, -4, \boxed{-3}[/tex]

Hence, you have your answer.

I am joyous to assist you at any time.

Please help me! I need details. I will appreciate it very much and I will mark Brainllist! Please! ASAP

Answers

Answer:

(1, 4), (2, 8), (3, 12)

Step-by-step explanation:

The ratio if the number if books to the cost in dollars is 1 : 4

To plot on a coordinate grid, we first look at the horizontal direction (x-axis)

Take the number of books to be values of the x-coordinate.

Start at the origin and travel the necessary distance to the left or the right then move up or down in the vertical direction to mark the y-coordinate.

The corresponding cost to be the values of the y-coordinate. Mark or plot at the intersection of the two numbers.

URGENT! HELP ME I WILL MARK YOU BRAINLIEST !!!!

pleasee fasterr !!!!!​

Answers

Answer:

C.................is the answer

Answer:

a)=10m

b)(x+1)

c)=(27x+9)

d=(3x+1)

The tape diagram represents an equation.

Write an equation to represent the image.

Answers

Answer:

m + 1/4 = 2/3

Step-by-step explanation:

Since they are equal lengths set them = to each other.

2/3 - 1/4= 5/12; 1/4 + m = 2/3

We know it's subtraction as the tape diagram above has 2 pieces, both smaller than the whole tape diagram below it. Also, knowing it has 2 pieces and that 1/4 is small than 2/3 help us know that it's subtraction.

I hope I've helped!

Is the following number rational or irrational?
TV4
Choose 1 answer:
A
Rational
В
Irrational

Answers

Answer:

B irrational :]..............

Solve 29 – 3:= 5x + 5 for x.​

Answers

Answer:

x=4.2

Step-by-step explanation:

29-3=5x+5

21=5x, x=21/5=4.2

X=4.2 because 29-3=5x +5 for d

What is the domain of the function y = [tex]\sqrt{x}[/tex]


A)Negative infinity less-than x less-than infinity

B)0 less-than x less-than infinity

C)0 less-than-or-equal-to x less-than infinity

D)1 less-than-or-equal-to x less-than infinity

Answers

Answer:

C is the answer

Step-by-step explanation:

The domain can't be minus. That's the only stipulation. It can be equal to 0 or anything larger than 0. It just can't go into the minus numbers.

0≤x<infinity.

C

A rectangle has a length of 22 m and a width of 400 cm. What is the perimeter of the rectangle? (Hint: all units must be the same)
Group of answer choices

5,200 cm

1,600 cm

844 cm

3,000 cm

Answers

Answer:it's 844

Step-by-step explanation:

When Ms. Perez has excellent service at a restaurant, the amount she leaves for a tip t is at least 20% of the cost of the meal c. Write a model representing the amount of the tip.

Answers

Answer:

t ≥ 0.2c

Step-by-step explanation:

Her tip is at least 20% of the cost of the meal, so her tip is greater than or equal to 20% of the cost of the meal

tip ≥ 20% of the cost of the meal

t ≥ 20% of c

Another way of writing "20% of c" is multiplying the two values, so we have

20% of c = 20% * c

t ≥ 20% * c

To convert from a percentage to a decimal, we can divide the percentage by 100. Here, we have

20% = 0.2

t ≥ 0.2 * c

katya is 1/8 the height of a tree in a forest. olga is 1/8 the height of the same tree. who is taller?

Answers

Answer:

2/8 you plus it

Step-by-step explanation:

you should plus both

Order the following numbers from least to greatest. 4,-2,-3,5,-1

Answers

Answer:

-3,-2,-1,4,5

I really hope this helps you a lot!

Step-by-step explanation:

Answer:

-3,-2,-1,4,5..

Step-by-step explanation:

janh xD I urself ds

0.5t + 0.25(t +16) =4 + 0.75t

Answers

Answer:

0.5t + 0.25(t +16) =4 + 0.75t

0.5t + 0.25t + 4 = 4 + 0.75t

0.5t+ 0.25t – 0.75 t = 4– 4

0.5t +0.25t–0.75t = 0 —> 0 = 0

I hope I helped you^_^

Answer: All Real Numbers or A.R.N

Step-by-step explanation:

Given

0.5t + 0.25 (t + 16) = 4 + 0.75t

Expand parentheses and apply the distributive property

0.5t + 0.25 · t + 0.25 · 16 = 4 + 0.75t

0.5t + 0.25t +4 = 4 + 0.75t

Combine like terms

0.75t + 4 = 4 + 0.75t

Subtract 0.75t on both sides

0.75t + 4 - 0.75t = 4 + 0.75t - 0.75t

4 = 4

Since both sides are left with the same term, this means any number would be able to make the equation true.

Therefore the answer would be All Real Numbers, or [tex]\boxed{A.R.N}[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Simplify: 6m2,2 – 3mn + 14mn + 10m²n2 + 9 O 27m2n2 + 9 16m?n? + 11mn + 9 16m4n" + 1lm?n? + 9 0 16mn+ 17mn + 9​

Answers

Answer:

2nd one is the ans

16m*2n*2+11mn+9

A steel ball has a volume of 1500 cm.
The density of the ball is 95 g/cm'.
Find the mass of the ball in kg.

Answers

Answer:

95kg

Step-by-step explanation:

Mass÷Volume=Density

Therefore, Mass = Volume × Density

Mass = 1500 × 95

Mass = 95,000g

Since we were asked to find the mass in kg:

1000g = 1kg

Therefore, 95,000g = 95kg

NEED HELP ASAP
giving brainly

Answers

Answer:

A&C

Step-by-step explanation:

They are negative and even and they are not positive and even too.

Answer:

A

Step-by-step explanation:

Technically A and C are correct but we are dealing with only negative even values. A non-positive integer is any negative number or zero but we don't have that value so it makes more sense to choose A than C. B is incorrect because a whole number can't include a negative number, a fraction, or a decimal. D is also incorrect because a non-negative integer is a positive number which we don't have in the set.

Best of Luck!

"The difference between m and n."

Answers

Answer:

Step-by-step explanation:

They are diffrent values

WILL MARK BRAINLIEST !!! PLEASE
find the length of PQ​

Answers

[tex]\\ \rm\longmapsto L=\dfrac{\Theta}{180}\times \pi r[/tex]

[tex]\\ \rm\longmapsto PQ=\dfrac{135}{180}\times 3.14(12)[/tex]

[tex]\\ \rm\longmapsto PQ=\dfrac{3}{4}\times 37.68[/tex]

[tex]\\ \rm\longmapsto PQ=\dfrac{113.04}{4}[/tex]

[tex]\\ \rm\longmapsto PQ=28.3[/tex]

100 POINTS AND CROWNED BRAINLIEST!!! PLS HELP ONLY 30 MINS LEFT!!

Determine whether each equation represents y as a function of x.
y= l 4-x l

Answers


To find the transformation, compare the equation to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.
Parent Function:
y
=
|
x
|
y
=
|
x
|
Horizontal Shift: Right
4
4
Units
Vertical Shift: None
Reflection about the x-axis: None
Vertical Compression or Stretch: None

Solve for x.
21)
60°
8x
80°

Answers

Answer:

x = 5

Step-by-step explanation:

Sum of angles = 180, so

60 + 80 + 8x = 180

140 + 8x = 180

8x = 180 - 140 = 40

x = 40/8 = 5

(question 31) if arc mBC =120 and arc mAD =50 whatis the measure of angle DYC

Answers

Answer:  D) 95

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

Explanation:

First, let's calculate angle BYC. This is the angle formed by the chords that subtend the arcs mentioned. This angle faces or is aimed toward the direction of the arcs. To find this angle, we'll average the arc measures like so:

angle BYC = (arcAD + arcBC)/2

angle BYC = (50+120)/2

angle BYC = 170/2

angle BYC = 85 degrees

Then we'll use the idea that angles BYC and DYC are supplementary (aka they form a straight 180 degree angle)

angleBYC + angleDYC = 180

angleDYC = 180 - angleBYC

angleDYC = 180 - 85

angleDYC = 95 degrees

which is why the answer is choice D.








plz answer it plz




step by step plz​

Answers

Answer:

answer is subtract the 180-120=80

Answer:

Y = 60

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Jonathan has no money and he owes three friends fifteen dollars each. What is his worth?

Answers

Answer:

-$45

Step-by-step explanation:

Find how much he owes his friends in total by multiplying 3 by 15:

3(15)

= 45

So, he owes his friends $45.

Since he has no money, we can find his worth by subtracting 45 from 0:

0 - 45

= -45

His worth is -$45.

¿Alguien sabe como realizarlo?

Answers

Hola! Intente resolverlo pero solo hice la primera por mi tiempo ahorita mismo y era:
f(0)=1
Toda la ecuación

Solve the Proportion



5 = x
-- --
12 36

Answers

Answer:

[tex]x = 15x[/tex]

Step-by-step explanation:

[tex] \frac{5}{12} = \frac{x}{36} [/tex]

[tex] \frac{5 \times 36}{12 } = x[/tex]

[tex]5 \times 36 = 12x[/tex]

[tex]180 = 12x[/tex]

[tex]12x = 180[/tex]

[tex]12x \div 12 = 180 \div 12[/tex]

[tex]x = 180 \div 12[/tex]

[tex]x = 15[/tex]

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