Doug is in line at the store. He has three items that cost ​$4.50​, ​$3.05​, and ​$1.50. Explain how Doug can add the cost of the items mentally before he pays for them.

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Answer 1

Answer:

He can add through calculater or by doing addition in his mind


Related Questions

ANSWER ASAP!!!!

Thank u

Answers

Answer:

27

Step-by-step explanation:

[tex]9 + 9 + 9 = 27[/tex]

3 sides

I am sorry if this is wrong

I’m having trouble understanding this, if anyone could help me understand it I’d greatly appreciate it.

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Answer:

x = angle left of (4x+5) [ᴄᴏʀʀᴇsᴘᴏɴᴅɪɴɢ ᴀɴɢʟᴇs]

So, x + (4x+5) =180° [sᴜᴘᴘʟᴇᴍᴇɴᴛᴀʀʏ ᴀɴɢʟᴇs]

[tex](4x + 5 )+ x = 180 \\ 4x + 5 + x = 180 \\ 5x + 5 = 180 \\ 5x = 180 - 5 \\ 5x = 175 \\ x = \frac{175}{5} \\ x = 35[/tex]

=> ˢᵒ ᵗʰᵉ ᵛᵃˡᵘᵉ ᵒᶠ ˣ ⁱˢ ᵉᵠᵘᵃˡ ᵗᵒ 35

What is the approximate volume of the cylinder? cylinder with height of 9 feet and radius of 4 feet.
answer choices: 324, 425.16, 734.76, 1,017,36

Answers

Answer:

Step-by-step explanation:

Formula

V = pi r^2 h

Givens

H = 9 feet

r = 4 feet

Solution

V = 3.14 * 4^2 * 9

V = 3.14 * 16 * 9

V = 452 square feet. Perhaps that 425 has a reverse digit in it. I'm sure that's the problem.

Which ordered pair is a solution to the system of equations below?
y = -2x – 1
y = 3x – 26

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C. (5, -11) hope this helps and I’m like sure sure it’s right

how many different burritos can be made when a customer chooses one item frm each category shown in the table

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Answer:13

Step-by-step explanation:

Step-by-step explanation:

Solve for b .
Simplify your answer as much as possible.
40=25b

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8/5
I divided from both sides and flip the equation

Find the area of the shaded regions below. Give your answer as a completely simplified exact value in terms of pi

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Answer:

18π cm²

Step-by-step explanation:

The area of the shaded region = Area of Sector

Radius, r =

The value of θ = 80°

Recall :

Area of Sector :

A = θ / 360 * πr²

A = (80 / 360) * π * 9²

A = 0.222222 * π * 81

A = 18π cm²

Find the value of x​ . Round your answer to the nearest tenth.

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I think its either 9 or 10

Can you maybe put up the explanation too and not just the answer? Thank you

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Hope it helps you! .........

Please show how you got the answer.​

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Answer:

cosA = 8/17

Step-by-step explanation:

cos =  adjacent/hypotenuse

The number that is adjacent to angle A is 24 and the hypotenuse is 51

Plug the numbers into the cosine equation, which would look like:

Cos A = 24/51

You can simplify the fraction by dividing it by 3

So Cos A = 8/17 or 0.89130173...

The first person that answered is correct

Suppose your SAT score is 1180. You look up the average SAT scores for

students admitted to your preferred colleges and find the list of scores below.

Based on your SAT score of 1180, which average score below represents the

college that would be your best option?

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Do you have the options for this?

an article bought a television for 2500 dollars and sold for 2325dollars find a.loss b.loss%​

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Answer:

Loss= $175

Loss %= 7%

Step-by-step explanation:

First of all, you find the difference between 2500 and 2325 which is 175, as his has decreased, it is a loss of $175

To find the percentage you do the difference over the original amount

So 175/2500 which will give you 0.07

0.07 x 100 will give you 7%

I need help with this.

Answers

Answer:

(3z+15) cm

Step-by-step explanation:

Perimeter: z cm + 8 cm + (z+3) cm + (z+4) cm = z cm + (z+3) cm + (z+4) cm +8 cm = (3z + 7) cm + 8 cm = (3z+15) cm.

I NEED HELP ASAP! THIS IS TIMED! WILL MARK BRAINLIEST IF ANSWER RIGHT!
What is the slope. Give answer in Decimal and Fraction.

Answers

Answer:

The slope is 15

Step-by-step explanation:

Points on the graph: (2, 30) and (4, 60)

Slope:

m = (y2-y1)/(x2-x1)

m=(60-30)/(4-2)

m=(30)/2

m= 15

Find the error for the proposed solution. Then correct the proposed solution.
2x + 18 = 16
2x = 34
2x 34
2 2
X = 17

Answers

Answer:

The error is in the second line.

x = -1

Step-by-step explanation:

When solving for "x", you are trying to isolate it, or move everything else to the other side. You may have learned that "what you do to one side, you do to the other" .

2x + 18 = 16

2x = 34               18 was added to the right side, but not to the other.

If you add 18 on both sides, then the equation would be:

2x + 36 = 34       "x" is not being isolated.

Instead, you should subtract 18 from 16.

Correct solutions steps:

2x + 18 = 16

2x + 18 - 18 = 16 - 18     Subtract 18 from both sides to cancel out 18

2x = -2

2x/2 = -2/2                     Divide both sides by 2

x = -1                              Final answer

Which measurement is equivalent to 1 pound?

16 ounces

12 ounces

8 ounces

4 ounces

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1 pound is equivalent to 16oz

2x + y = 1 in slope-intercept form. :) also how is your day going so far?

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Answer:

y=-2x+1

Step-by-step explanation:

2x+y=1

y=-2x+1

nnd my day has been pr good :)

Answer:

y=-2x+1

Step-by-step explanation:

I hope this helps. I'm doing great.

Mhanifa can you please help? I will mark brainliest!

Answers

Answer:

Property of kite used to solve this

Diagonals are perpendicularOne diagonal is an angle bisector (WY)

(20)

∠XYZ is double the ∠XYV∠XYV is complementary with ∠VXYm∠XYZ = 2(90° - 58°) = 64°

(21)

∠VZW is complementary with ∠VWZ and ∠VWZ is half of ∠ZWXm∠VZW = 90° - 50°/2 = 65°

(22)

∠ZWV is half of ∠ZWXm∠ZWV = 1/2*50° = 25°

(23)

m∠WZY = m∠VZW + m∠VZY = m∠VZW + m∠VXYm∠WZY = 65° + 58° = 123°

Answer PLEASEE (brainlist)

Answers

Answer:

what you just answered

Step-by-step explanation:

2(5) + 3 = 13 so (5,1) is not

Answer:

D is the correct answer.

Step-by-step explanation:

1 times 2 is 2 plus 3 is 5, so its not A

2 times 2 is 4 plus 3 is 7 so its not B

and 3 times 2 is 6 plus 3 is 9 so it cant be C either

Therefore its D.

At age 21, Felipe is 60% of the minimum age he must be to become U.S. President.
What is the minimum age he must be to become U.S. President?

Answers

35 years of age
Hope this helped

Answer:

35 years

Step-by-step explanation:

[tex]\frac{60}{100} = \frac{21}{y}[/tex]

Cross Multiplying:

[tex]21*100 = 2,100\\2,100/60 = 35[/tex]

I really need help!!! Thank you!

Answers

Answer:

it's A, multiply and see, you get the same answer as in the question

Step-by-step explanation:

When you cut a cross-section of a three-dimensional shape, how many dimensions is the cross section? Explain.

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every two-dimensional shape can be defined as a cross section of a three-dimensional shape.

Mclane is playing a game where you get 5 points for correct answers and lose 3 points for incorrect answers. If he gets 6 questions correct and 7 questions incorrect, what was his final score?

Answers

Answer:

9

Step-by-step explanation:

final score = total points for correct answer - total points for wrong answer

total points for correct answer = 5 x 6 = 30

total points for wrong answer = 7 x 3 = 21

30 - 21 = 9 points

Help
Please !!!,!,!,!,!!

Answers

Answer:

700cm

2450cm

40cm

6991cm

Step-by-step explanation:

Times ten for every one.

i need this pls it’s due tm i was absent

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Answer:

Well x would be 103° because it forms a line (180°) with the 77° but I have no idea what those arrows are asking...

g/cm
6 cm
6 cm
What is the volume of a square pyramid that
is 9 cm tall and has a base length of 6 cm?
cubic centimeters
Volume of a pyramid: V = {Bh (Where "B" is the area of the pyramid's base.)

Answers

Answer:

the answer should be 6 cm

Step-by-step explanation:

I believe that is it

escribe una ecuación parábola del foco (0,4) y directriz y = -4​

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Answer:

This is an English server

Step-by-step explanation:

Which number is an integer?

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Answer:

Step-by-step explanation:

Can you please specify on that question

Answer:

Integers are numbers that include the negatives, zero and positives.

Step-by-step explanation:

If you ever get confused there's a big circle chart to help you remember look for it online!! What I use to remember is visualizing a number line!

First is the real numbers, so the numbers we were taught since we were little like 1, 2 ,3, 4, 5, 6 and so on. So that's the first part of the number line.

Next is the whole numbers so you just add a zero to that number line. Whole numbers is just all of the real numbers + the number zero.

Then it's the integers so you add the left side of that number line. Integers are real numbers, whole numbers, and negatives. So basically on the number line it's the negatives , zero, and the positives.

Last it's the radicals so all parts of a number like fractions and decimals. So you can add .5 in between the numbers of that numberline.

I hope this strategy helped and if it didn't here's that circle chart!!

I really hope this did help tho!!

7x+3y=11
3x-y=23
Solve by substitution

Answers

hope this helps have a nice day :)

Se tienen cuatro libros de Matemáticas, tres Biología y tres Religión ¿De cuántas maneras diferentes se pueden ordenar todos los libros en línea recta?

Answers

Answer:

4,200

Step-by-step explanation:

Tenemos un total de:

4 libros de matemáticas

3 libros de biología

3 libros de religión

10 libros en total.

Ahora vamos a contar la cantidad de opciones que tenemos para cada posicion.

Primer libro (tenemos 10 opciones)

segundo libro (tenemos 9 opciones, porque ya colocamos un libro)

tercer libro (tenemos 8 opciones, porque ya colocamos dos libros)

Con esto ya podemos estimar el número de opciones para cada posicion, y sabemos que el número total de combinaciones es igual al producto entre los números de opciones para cada caso. El número total de combinaciones es:

C = 10*9*8*7*6*5*4*3*2*1 = 10!

Ahora si asumimos que no podemos diferenciar los libros de matemáticas, entonces no debemos contar sus permutaciones (si tenemos 4 libros de matemáticas, tenemos 4*3*2*1 permutaciones = 4! permutaciones). Debemos dividir al numero total de combinaciones por 4!.

Y lo mismo pasa para las 3! permutaciones de los libros de biología y las 3! permutaciones de los libros de religión.

Entonces el número total de combinaciones diferentes es:

[tex]C = \frac{10!}{3!*4!*3!} = \frac{10*9*8*7*6*5*4*3*2*1}{(3*2*1)*(4*3*2*1)*(3*2*1)} = 4,200[/tex]

Hay 4200 diferentes formas de ordenar los libros.

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