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.

Answers

Answer 1

Answer:

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


Related Questions

Ivan has a sticker collection. 2/5 of his stickers are scratch-and-sniff stickers. 1/4 of his scratch-and-sniff stickers smell like bananas. What fraction of Ivan's sticker collection smells like bananas? *

Answers

Answer:

1 / 10

Step-by-step explanation:

From the question :

Fraction of scratch and sniff sticker from total stickers = 2/5

1/4 of scratch and sniff stickers smell like banana :

Fraction of total stickers that smell like banana :

(Fraction of scratch and sniff sticker from total stickers) * (scratch and sniff stickers smell like banana)

= (2/5) * (1/4)

= 2 /20

= 1/10

what is1 00 + 84 – 62x = 494

Answers

That’s the answer with steps, I wrote the steps down so u won’t have any confusion

Solve.
-25 - (-5) = 0
PLLLSSS

Answers

Answer:

-20=0

Step-by-step explanation:

Answer: -20=0

Step-by-step explanation:

-25 - (-5) = 0

-25+5=0

-20=0

A: {(-3,-1), (2,2),(0,1),(1,3),(-2,4)}
B: {(-3,-1),(-2,2),(1,0),(3,1),(4,-2)}
C: {(-3,-1),(2,-2),(1,0),(3,1),(4,-2)}
D: {(-1,3),(-2,-2),(0,1),(3,1),(4,2)}

Answers

Answer:

Add al of the numbers

Step-by-step explanation:

all you have to do is add all the numbers

The system of linear equations represented in the graph is ______
The solution of this system of equations is ____

Answers

Answer:

(- 3, - 5 )

Step-by-step explanation:

The solution to a system of equations given graphically is at the point of intersection of the 2 lines.

The lines intersect at (- 3, - 5 ) ← solution

Answer:

The system of linear equations represented in the graph is y=x-2, y=3x+4.

The solution of this system of equation is (-3,-5)

At the craft store, Maureen bought a bag of yellow and red marbles. She received 30 marbles in all. 24 of the marbles were yellow. What percentage of the marbles were yellow?

Answers

Answer: There are 10 orange marblesStep-by-step explanation:There are 25 marbles in the bag 40% are orange To determine the number of orange marbles, we multiply the total number of marbles  by the percent that are orange 25 *40% = number of orange marbles 25*.40 10 There are 10 orange marbles

so its really just bots on here dayum​

Answers

Answer:

Yes only bots

Step-by-step explanation:

Answer:

ikr its so annoying

Step-by-step explanation:

Adam jogs at an average speed of 10km/h from his house to the airport. The airport is 7km away from his house. At what time must Adam leave his house in order for him to reach the airport at 7:20 am.

Answers

Answer:

6:38am

Step-by-step explanation:

From the question we are told that

Average speed [tex]V_{avg}=10km/h[/tex]

Distance traveled [tex]d=7km[/tex]

Generally the velocity across a distance is mathematically given given as [tex]V=d/t[/tex]

[tex]10=\frac{7}{t}[/tex]

[tex]t=0.7h\\t=42minutes[/tex]

Therefore

7:20-42 minutes =6:38am

PLEASE ANSWER WILL GIVE BRAINLIEST

50 POINTS

approximate the solutions to this system.

y = 3x2 + x − 6

y = x − 4

Round your answers to the nearest hundredth.

Answers

Answer:

Its actually y=-4.82 but ok

Step-by-step explanation:

GIVING BRAINLIEST!!!!!

Which expression represents the following statement? Subtract 5 from 7 times the sum of 4 and 2. (4 points)

Group of answer choices

7 x (4 ÷ 2) + 5

7 + 4 + (2 ÷ 5)

7 ÷ 4 − (2 + 5)

7 x (4 + 2) − 5

Answers

The answer is D

4 and 2= 4+2=(4+2)

7 times the sum of 4 and 2

7* (4+2)

Subtract 5 from

7* (4+2)-5

Answer:

The answer is D.

Karla made a model of her grandfather's fishing boat using a scale where 2 inches represents 3 feet. Her grandfather's actual boat is 28 feet long. What is the length of Karla's model boat?​

Answers

the answer is 3 1\9. thats the lentgh of the boat

3 1/9 this could be done on a calculator

Nine students took a mathematics quiz. Their scores were 85 ,68 ,54 ,69 ,70 ,64 ,89 .77 ,71

​Find the median.

Answers

Answer:

70

Step-by-step explanation:

The median is the value that is directly in the middle of the data set.

Hope this helps :)

The median of the mathematics quiz of the nine students is M = 70

What is Median?

The median is the value that's exactly in the middle of a data set when it is ordered. It's a measure of central tendency that separates the lowest 50% from the highest 50% of values. The steps for finding the median differ depending on whether you have an odd or an even number of data points

Arrange the data points from smallest to largest.

If the number of data points is odd, the median is the middle data point in the list.

If the number of data points is even, the median is the average of the two middle data points in the list.

Given data ,

To find the median of the scores, we need to first arrange them in order from smallest to largest:

54, 64, 68, 69, 70, 71, 77, 85, 89

Since there are nine scores, the median is the middle score when they are arranged in order.

In this case, the fifth score (70) is the middle score, so the median score is 70.

Hence , the median score for the math quiz is 70

To learn more about median click :

https://brainly.com/question/28687994

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Probability is __________. A. the measure of the likelihood of something happening B. the act of risking something of material value on an uncertain outcome C. the ratio of desired outcomes to undesired outcomes D. the act of winning a bet Please select the best answer from the choices provided A B C D

Answers

Answer:

b

Step-by-step explanation:

Match each expression to its exponential form.

Answers

10^2 = 10 × 10

10^3 = 10 × 10 × 10 = 1000

10^4 = 10 × 10 × 10 × 10

An amount of 40.000 is borrowed for 6 years at 5% interest, compounded annually If the loan is paid in full at the end of that period, how much must be paid back? Use the calculator provided and round your answer to the nearest dollar.

Answers

Answer:

A  =  $56,740

Step-by-step explanation:

Use the Compound Amount formula A = P(1 + r)^t.  Substitute 0.05 for r and $40,000 for P:

A = $40,000(1 + 0.05)^6

A  =  $56,740.26, or, rounded off to the nearest dollar,

A  =  $56,740

I dont know what is the missing number 6 x ? x 3 = 90

Answers

6 times 5 equals 30 and 30 times 3 is 90 so 5 is your answer

A rocket travels according to the equation h = - 4.9(t - 6)^2 + 182, How high was the rocket above the ground when it was fired?

Answers

i found the answers to your question.

HURRRY! ILL GIVE BRAINLEST Mrs. Jordan surveyed all of her students to find out which testing format they prefer. Of the 120 students, 30 prefer ALEKS.com, 60 prefer paper, 10 prefer Deltamath.com and 20 prefer Microsoft Forms.
What is the relative frequency of students who prefer taking their test online?
answers: 17%

25%

8%

50%

Answers

Answer:

50%

Step-by-step explanation:

30+10=40

40+20=60

120-60=60

60 is 50% of 120

Answer 50%

The online types of tests are Aleks.com, deltamath.com, and Microsoft forms. These votes totaled 60 (30+10+20=60). There were 120 total student responses.

60/120=0.5

0.5*100%=50%

The circle graph shows how Tremaine divided his time on the computer last week Tremaine's Computer Time Games 25% Homework 20% Research 5% Other 10% Social media 40% Tremaine used the computer a total of 30 hours last week. How many more hours did Tremaine use the computer to play video games than to do research? 6 hours 20 hours 75 hours • 15 hours


Explain the answer choice you choose. I will mark you brainlist!​

Answers

Step-by-step explanation:

25%×24 =6 jahdyheuxlfoodnxhydushgdys

6 more hours did Tremaine use the computer to play video games than to do research.

What is Percentage?

The percentage formula is used to calculate the amount or percentage of anything in terms of 100. Percentage indicates "per hundred" in its most basic form. The percentage formula is used to express a number between zero and one. It is a number that is expressed as a fraction of 100. It is represented by the sign% and is mostly used to compare and find ratios.

Given:

The percent for Video Game= 25%

and, percent for Research = 5%

So, 25% of  30 = 25 / 100 x 30 = 7.5

5% of 30 = 5/100 x 30 = 1.5

So, the the number of hour spend on more on Video game

= 7.5 - 1.5

= 6 hour

Learn more about Percentage here:

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Which of the following is a factor of 21?​

Answers

Answer:

The factors of 21 are 1, 3, 7 and 21. A factor is a number that can divide evenly into a given number. Because 21 can be divided by numbers other than itself and 1, it is called a composite number. Every number has 1 and itself as a factor. Numbers that have no other factors are called prime numbers.

Step-by-step explanation:

so is not 30 so what is it? I’ll mark brainliest

Answers

Answer:

15

Step-by-step explanation:

in a triangle

base (b) = 5 cm

height (h) = 6 cm

Area of the triangle

= 1/2 * b * h

= 1/2 * 5 * 6

= 5 * 3

= 15 cm²

hope it helps :)

The hot tub is shaped like a rectangular prism. It is 7 feet long, 3 1/4 feet deep, and has a volume of 159 1/4 cubic feet. What is the width of the hot tub?

Answers

Answer:

w = 7 feet

Step-by-step explanation:

Volume of a rectangle prism = length × width × height

Length = 7 feet

Width = ?

Height = 3 1/4 feet

Volume = 159 1/4 cubic feet

Volume of a rectangle prism = length × width × height

159 1/4 = 7 × w × 3 1/4

637/4 = 7 × w × 13/4

637/4 = 7 × 13/4 × w

637/4 = 91/4w

w = 637/4 ÷ 91/4

= 637/4 × 4/91

= 637*4 / 4*91

= 2548 / 364

w = 7 feet

Giving 20 points plz help me

Answers

This would be three square inches.

Answer:

3 square inches

Step-by-step explanation:

if each sticker is 1 inch by 1 inch, that means they each have an area of 1 in² since A=lw (area equals length times width), A=1×1, A=1. Now since there are 3 stickers, 3 stickers ×1 inch² equals a total area of 3 inches²

Hope this helps!

How do you find 3/4 of 20

Fast response please!!

Answers

Answer:

15

Step-by-step explanation:

3/4(20/1) = (3*20)/(4*1)

60/4

15

15
.... ≤))≥
.... _| \_

t + 464 = 517. solve for t​

Answers

Answer:

The value of t is 53

Step-by-step explanation:

t + 464 = 517

t = 517 - 464

t = 53

Thus, The value of t is 53

-TheUnknownScientist

Please Please please please help help help help!!!!!!!!!!!!!!!!!!!

Find the product of 3 times the difference of 30 and 25 and 4 times the sum of12 and 15.

And please don't send the links and all please just answer step by step please!!.

Answers

Answer:

Step-by-step explanation:

30  30 x 3 = 90

x 3

90  

first  multiply 4 x 5 = 20 bring down 0 then multiply 4 x 2 = 8 then add+2= 10

25 x 4 = 100

12 x 15 = 180

So you would write out the equation 3(30/25) x 4(12+15) and then do 30/25= 1.2 then do 1.2*3= 3.6 save that answer for later then do 12+15=27 then do 27*4= 108 then multiply together the 108* 3.6= 388.8

Pls help
Pls help
Pls help

Answers

Answer:

[tex]153\ in^2[/tex]

Step-by-step explanation:

1. Approach

Divide the given figure up into two simple figures, a trapezoid, and a rectangle. Calculate the area of each figure by using their respective area formula. Then add up the results to get the value for the area of the entire figure.

2. Area of the trapezoid

The first figure is a trapezoid, calculate its area by using the following formula,

[tex]A_t= \frac{b_1+b_2}{2}(h)[/tex]

Where parameters ([tex]b_1[/tex]) and ([tex]b_2[/tex]) represent the base of the trapezoid, and ([tex]h[/tex]) represents the height. Substitute in the given values and solve.

[tex]A_t = \frac{16 + 5}{2}(10)[/tex]

Simplify,

[tex]=\frac{21}{2}(10)[/tex]

[tex]=10.5(10)[/tex]

[tex]=105[/tex]

3. Area of the rectangle

The other figure formed by the partition of the two figures is a rectangle. The formula to find the area of a rectangle is the following,

[tex]A_r =(b)(h)[/tex]

Where ([tex]b[/tex]) represents the base of the figure, and ([tex]h[/tex]) represents the height of the figure. Substitute in the values for the given parameters and solve,

[tex]A_r=(16)(3)[/tex]

Simplify,

[tex]=48[/tex]

4. Find the total area

Now add up the values for the area of each figure. The result will be the total area of the figure,

[tex]A_t + A_r = A[/tex]

Substitute,

[tex]105 + 48 = A[/tex]

Simplify,

[tex]153 = A[/tex]

2/3+1/12 what's the answer

Answers

Answer:

3/4 or 9/12 make the denominators the same then just add

Answer:

9/12 or simplified as 1/4

Step-by-step

2×4/3×4 + 1/12

= 8/12 + 1/12

= 9/12

= 1/4

find the perimeter of the figure

Answers

Answer:

the perimeter is 97 cm

Step-by-step explanation:

we find this by adding the lengths of all the sides

Answer:

10+3+3+33+33+15=97

Step-by-step explanation:

simplify the expression below using the distributive property:

4x - 2(x + 5)

Answers

Answer:

It is 2x-10

Step-by-step explanation:

It is 2x-10 because when you are doing this you want to try to get the x alone but in this case it is not dertinable

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