Mathematics Middle School

Evaluate - 2 + 7+ (-4).

Answers

Answer 1

Answer:

Step-by-step explanation:

You start by adding -2 and 7.

Because the 2 is negative, it's like subtracting from 7.

This is how you get 5 from -2 +7.

Next, you have to add 5 and -4.

It's like subtracting again, so you get 1.

Related Questions

HI! PLEASE HELP I AM SO CONFUSED! Also, please explain how you did it so I don't have to keep asking... THANKS SO MUCHH!!♡♡♡ ToT

Answers

Answer:

Step-by-step explanation:

Cube root of 125 is 5 beacuse 5 x 5 x 5 = 125

Answer: the answer is 5

Step-by-step explanation: We can express 125 as 5 × 5 × 5 i.e. ∛125 = ∛(5 × 5 × 5) = 5. Therefore, the value of the cube root of 125 is 5.

let me know if you need me to explain it better :)

Please help thank you!

Answers

Answer:

18/(10-7)+2=8

(48/2)-4^2 +2*2=12

I hope you have a nice day!

Pleas help as soon as possible

Answers

Neither month. Every month he sold more blue cars then red cars

Neither month every month he did it the same thing

( 8 + 3)(-1)
NOT THE ANSWER
Rearrange in distributive property please

Answers

Answer:hehe ion

Step-by-step explanation:I’m sorry✨

(8x-1)(3x-1) is how you would write it

explain how you can use proportional reasoning to determine the whole if you know that 21 is 60% of the whole

PLEASE EXPLAIN. DONT GIVE THE ANSWER,, GIVE AN EXPLANATION

Answers

Using a proportion ratio you can make the equation: 21/60=x/100 there you can use the means extremes property to get your answer, hope this helped

The ordered pair (2, 6) represents Point K on a coordinate grid. Which ordered pair represents the reflection of Point K across the x-axis?

Answers

Answer:

(2, -6)

Step-by-step explanation:

Reflecting across the x-axis means that the y value gets inverted, so the y = 6 in the ordered pair becomes y = -6.

here are some numbers 2 9 14 36 40 what number is a multiple of 12 which number is a prime number which number is a factor of 64

Answers

Answer: 36 is a multiple of 12

2 is a prime number.

2 is a factor of 64

Step-by-step explanation:

12 × 3 =36, so 12 is one of the factors.

2 is the only even prime number. All other even numbers are multiples of 2.

9 is not a prime number. 3 × 3 = 9

2 is a factor of 64. 2 × 32 = 64 None of the other numbers given can divide evenly into 64, so they are not factors of 64.

Answer:36 is a multiple of 12

Step-by-step explanation:

Please help me,
Gia is thinking of a number, which she calls n. She adds 4 to the number and then doubles the sum.
Write an expression to represent Gia's number.

(I don't know what the expression is, if u can help me, please write the answer! :)

Answers

Answer: 2n + 8

Step-by-step explanation:

1st part:
n + 4

2nd part:
Multiplies the 1st part by 2

2(n + 4)

2n + 8

Can SOMEONE HELP A POOR MIDDLE SCHOOLER OUT

Answers

Answer:

Step-by-step explanation:

A , b , d
Are all correct
Out of 25 students 10 have brown eyes

Madison and her sister went to the store together. After the store, Madison walked 2 blocks west to get a coffee and her sister walked 7 blocks west back to work. How many blocks is the coffee shop that Madison went to from her sister's work.

Answers

Answer: 5 blocks

Step-by-step explanation:

If they both walked in the same direction, they both will be the same distance from each other.

If Madison went to a coffee shop 2 blocks west from the store, and her sister went from the store they were previously at to her job 7 blocks west, then, since they walked in the same direction, they would only be 5 blocks away.

Hope this helps :)

-jp524

5 blocks hope this helps

Please help me! I will give brainliest to best answer!

Answers

Answer:

Both numerator and denominator can be divided by 3.

Explanation:

Find the HCF of 18 and 21. Now, it's 3.

Answer:

Step-by-step explanation:

Both of them are in the table of 3 so 18/3 = 6 and 21/3 = 7

So the fraction will be = 6/7

That's your answer

I need help ...................................

Answers

Can you show the whole problem so people can help u

2 • 3+ (5 - 3 - 1) ^4 show your work.

Answers

Answer:

Step-by-step explanation:

(2)(3)+(5−3−1)4

6+(5−3−1)4

6+(2−1)4

6+14

6+1

In the example shown, how many miles will June walk in 2.8 hours? Estimate first, then compare your answer to the estimate. 1.7 miles in 1 hour if she walks at the same rate how far will she walks in 1.5 hours

Answers

Answer:

What are the examples I can't answer this without them

Step-by-step explanation:

Help me and show work and ill give points

Answers

Answer:

-8m+10n

Step-by-step explanation:

5m+3(2n-7m)+4(n+2m)

Simplify the parenthesis.

5m+6n-21m+4n+8m

Reorder so each like term are by each other.

5m+8m-21m+6n+4n

Combine those like terms.

13m-21m+10n

-8m+10n

-hope it helps

Answer:

-8m+10n

Step-by-step explanation:

first do the parenesis 3 x 2n = 6n 3 x 7m= 21m

then do 4 x n =4n 4x 2m=8m

5m+6n-21m+4n+8m

/..................................................................................................................................................................../

/..................................................................................................................................................................../

Answers

yellow is 2 and blue is 6
hope this helps!

Answer: hope this helps ♡

(blue) 6:2 (yellow)

Step-by-step explanation:

total = 8oz

(blue) 3:1 (yellow) = 4oz (3+1)

(blue) 6:2 (yellow) = 8oz (6+2)

Tyler’s math class found that it would take 2.5×10^8 dollar bills to cover a square mile area. The surface area of the United States is about 3.8×10^6 square miles. About how many dollar bills are needed to cover the United States?

6.3×10^14

9.5×10^14

6.3×10^48

9.5×10^48

Answers

Answer:

9.5×10^14

Step-by-step explanation:

The number of dollar bills are needed to cover the United States, when 2.5×10^8 dollar bills to cover a square mile area is 9.5×10^¹⁴.

What is the exponent power with base 10?

To write the big number in short form, we write them in the positive power of 10.

To write the very small number, we write them in the negative power of 10.

Tyler’s math class found that it would take 2.5×10^8 dollar bills to cover a square mile area.

The surface area of the United States is about 3.8×10^6 square miles.

To find the number of dollar bills are needed to cover the United States, we have to multiply 3.8×10^6 square miles with 2.5×10^8 dollar bills.

Let suppose it needed n dollar bills. Thus,

$n=3.8\times10^6\times2.5\times10^8\\n=3.8\times2.5\times10^6\times10^8$

When the base is same in multiplication operation, add the power. Thus,

$n=3.8\times2.5\times10^6\times10^8\\n=3.8\times2.5\times10^{6+8}\\n=9.5\times10^{14}$

Thus, the number of dollar bills are needed to cover the United States, when 2.5×10^8 dollar bills to cover a square mile area is 9.5×10^¹⁴.

Learn more about the exponents with base 10 here;

https://brainly.com/question/18324331

#SPJ2

Harry is training for a cross-country track event. The table shows the proportional relationship between his distance and time. Distance (miles) 0.4 1.6 ? Time (minutes) 4.8 19.2 28.8 How many miles can Harry run in 28.8 minutes? 3 miles 2.4 miles 2.1 miles 2 miles

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Answer:

Step-by-step explanation:

2.4 miles

The answer is 2.4 miles I believe

Find the volume of a prism. Show your work.

Answers

Answer:

Step-by-step explanation:

11 times 22

the area of its cross-section multiplied by the length

answer: 242cm squared

The answer is 242 CM squared. The answer above explains better than I can :)

.
Create a story and draw (or explain) a model for the problem 6÷1/3

Answers

Answer:

there were 6 people and they wanted to divide a pizza 1 third each. how much would everyone get?

Step-by-step explanation:

Answer:

There are 6 Hershey bars. Each Bar is divided into 1/3 pieces. How many pieces in total are there. (18)

Step-by-step explanation: Hope this helped ^_^

Please help ASAP I will also give brainiest :)

Determine the intercepts of the line.

Answers

x intercept is (5/2,0)
y intercept is (0,5)

Answer:

x: (5/2,0)

y: (0,5)

Step-by-step explanation:

To solve for x-intercept, substitute 0 for y.

-4x+7=2(0)-3

-4x+7=-3

-4x=-10

x=10/4 or 5/2

To solve for y-intercept, substitute 0 for x.

-4(0)+7=2y-3

7=2y-3

10=2y

y=5

A number is increased by 20%. Work out the original number of the increase is 600

Answers

Answer:

The answer would be 480

Step-by-step explanation:

The first step is to find out 20% of 600 and that would equal 120, the next step is to subtract 120 from 600 and the answer is 480.

Answer:

480

Step-by-step explanation:

If the number increased by 20% we can decrease it by 20% to get our number before it was increased.

20% of 600 is 120

600-120=480

PLS HELP ASAP
A die is rolled twice.
Which answer correctly describes the probability of the die landing on a number greater than 6, and then a 3?

impossible
unlikely
even

Answers

Answer:

impossible

Step-by-step explanation:

There is no number on a die greater than 6.

WILL MARK BRAINLYEST PLSSSSSSSSSSSSSS
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Classify the decimal expansion of each fraction as a terminating decimal or a repeating decimal.

Drag and drop the fractions into the boxes to correctly complete the table.

Answers

Terminating decimal- 15/40 12/30, the other two r repeating decimals

Felicia decided to purchase 2 points in order to lower her interest rate on her $149,000 mortgage. How much additional money does she need to bring to closing

Answers

Answer:

$2,980

Step-by-step explanation:

Mortgage points is a term used by a mortgage brokers and it is usually referred to the percentage of the loan amount.

From the given question:

Felicia decided to purchase 2 points in order to lower her interest rate on her $149,000 mortgage

the 2 points that Felicia purchased is equivalent to 2% i.e 0.02 points

Thus; the additional money she need to bring to closing is calculated by the formula:

cost = points × loan amount

= 0.02 × $149,000

= $2,980

A health food store has launched a new pack of vitamins for children. The store records the number of packs ordered by a random sample of 100 online customers and the number of packs ordered by a random sample of 100 walk-in customers.

Which of the following inferences can be drawn about the buying pattern of the online customers versus that of the walk-in customers?

A. Online customers buy an average of four packs compared with walk-in customers, who buy an average of one pack.

B. Online customers buy an average of five packs compared with walk-in customers, who buy an average of two packs.

C. Online customers buy an average of four packs compared with walk-in customers, who buy an average of two packs.

D. Online customers buy an average of five packs compared with walk-in customers, who buy an average of one pack.

Answers

Answer:

The Answer is C. Online customers buy an average of four packs compared with walk-in customers, who buy an average of two packs. Step-by-step explanation:

The mean for online customers is 4.3

The mean for walk in customers is 1.8

Round the 4.3 to 4 and Round the 1.8 to 2

Theodore mowed three large lawns at $40 each and 2 small lawns at $25 each. What percentage of the money he made was from the large lawns?

Answers

Answer
I’m not sure but I got 33.33%

First I did 3 x 49 because it’s 3 for each
So I did 40=p•120
—————-
120 120
0.3333 = p
0.3333 x 100 to get the percent
I got 33.33%
So Theodore made 33.33% from the large lawns.

2. In the figure, is an exterior angle to . complete sentences

(a) What is m<3 ?

(b) What is m<4?

Answer:

Answers

Answer:

a)180-57-20=103

b)180-103=77

Step-by-step explanation

Write the equation of the line in slope-intercept form using y=mx+b

Answers

Answer:

y = -1/6x + 5

Step-by-step explanation:

Slope is -1/6 and y-intercept is 5

Answer:

y=$\frac{-1}{6}$x+5

Step-by-step explanation:

y=mx+b

m= slope

b= y-intercept

-1/6 is the slope because it is the unknown variable

5 is the y-intercept because it hits a perfect point on the y-axis

to find the slope i used rise/run the rise is -1 and the run is 6

the rise is negative because it is going to the left and essentially on a full graph that would be negative

hopefully this helps :) have a nice day !!

What is the difference between a uniform and a non-uniform probability model?
Select from the drop-down menus to correctly complete the statements.

In a Choose... A NON- UNIFORM B UNIFORM probability model, the probability of each outcome occurring is the same. In a Choose... A NON- UNIFORM B UNIFORM probability model, the probability of each outcome occurring is not the same.

(Pls answer 2 questions that say choose)

Answers

Answer:

Step-by-step explanation:

The answer is B because Uniform distributions are probability distributions with equally likely outcomes. In a discrete uniform distribution, outcomes are discrete and have the same probability. In a continuous uniform distribution, outcomes are continuous and infinite. In a normal distribution, data around the mean occur more frequently.

Answer:

1=uniform

2=non-uniform

Step-by-step explanation:

I took the k12 quiz and got 100%

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