Mathematics High School

Which expression is a representation of the following:
+4
-7
A.4+ (-7) = - 3
B.7-4=3
C.4 + 7 = 11
D.4 + (-7) = 3

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Answer 1

The correct expression is A.

Related Questions

I need help with this

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Answer: 1&3=29, 2&4=151

Step by Step:

Can someone help me with number 7 and 8. Thank you

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Answer:

Q7) ( 2,-2)

Q8) (- 0.5 , -2)

Step-by-step explanation:

As we have to find the mid-points of the line segments, the line segments will be divided in same ratio i.e. 1:1 (∵ A Mid-point divides a line segment into equal parts )

According to Section formula ,

[tex]( x' , y') = (\frac{mx^2 + nx^1}{m+n} , \frac{my^2+ny^1}{m+n} )[/tex]

where (m,n) are the ratios in which a line segment is divided & ( x¹ , y¹ ) ( x², y²) are the co-ordinates of a line segment.

In Q7 ,

x¹ = 3 , y¹ = -9 , x² = 1 , y² = 5 & m = n = 1

So putting the section formula here gives :-

[tex]( x' , y') = (\frac{1*1 + 1*3}{1+1} , \frac{1*5+1*(-9)}{1+1} ) = ( 2 , -2)[/tex]

In Q8 ,

x¹ = 5 , y¹ = -1 , x² = -6 , y² = -3

So putting the section formula here gives :-

[tex](x' , y') = (\frac{1*(-6) + 1*5}{1+1} , \frac{1*(-3) + 1*(-1)}{1+1}) = ( -0.5 , -2)[/tex]

The number of hot dogs Ryan can eat varies directly with the amount of time he spends eating. If Ryan can eat 14 hot dogs in 6 minutes, how many hot dogs can he eat in 15 minutes?

Answers

Answer:

Step-by-step explanation:

If I am not correct I'm sorry.

If Ryan can eat 14 hot dogs in 6 min then he should be able to eat about 35 hot dogs in 15 mins.

14/6= 2.333...

so 2.333... x 15 would equal 35

I hope this helps.

Answer:

Ryan can eat about 34.5 hot dogs in 15 minutes

Step-by-step explanation:

You first need to find how many hot dogs ryan eats in one minute. By doing this you need to do 14 divided by 6 and that will get you to 2.3

Than you need to take that 2.3 and muliply it by the 15 minutes and than that would get you to your answer of 34.5 hotdogs in 15 minutes

I hope this helped!

How many protons would make up 9.435 x 10-22 g?

Answers

Answer:

Mass of proton (m) = 1.67×10^(-27) kg

Step-by-step explanation:

Mass of proton (m) = 1.67×10^(-27) kg.

Since, 1 kg = 1000 g

Therefore, m = 1.67x10^(-27+3) g = 1.67x10^(-24) g

Let N no. of protons be present in 1 g. Hence, Nxm = 1 g

So, N = 1 / m = 1 / (1.67x10^(-24))

N = 6x10^(23) (approx.)

Exact mass of proton gives N = 6.022 x 10^(23).

That is a very special no. In fact, it is the Avogadro’s constant used frequently in chemistry. Avogadro’s no. is actually the number of atoms in exactly 12 g of C-12 isotope of carbon. Since, the atomic mass of C-12 is 12 u (unified mass), then again the no. of carbon atoms turn out to be N.

HELP HELP Point F is the midpoint of segment DE. DF = 2x+6 and DE = 2x+36. Find DE.

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Answer:

since F is midpoint

DF= FE = 2x+6

DF +FE=DE

2x+6 + 2x+6 = 2x+36

4x + 12 = 2x+36

2x = 24

x=12

DE =2x+36 =2*12 + 36 = 60

Step-by-step explanation:

What is this called? I’m trying to look up a video on how to do these.
y = - 7/2x -4

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Answer:

linear equations, only when it is y=(equation with an x

variable)) or x=(equation with an y

variable), usually you tend to graph these.

The following value is closest to what number? 292

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Your round it to 300 so the answer is 300

2120
Question #7MultipleChoice
Show Answer
Subtract the following fractions. (Reduce answers to lowest terms.)
3/10 - 1/4=
3/14
3/6
1/2
1/20

Answers

Answer:

1/20

Step-by-step explanation:

3/10 - 1/4

First, convert the fractions to a common denominator:

3/10 *2/2 = 6/20

1/4 * 5/5 = 5/20

Now put them back into the equation and solve:

6/20 - 5/20 = 1/20

Another way to do this:

3/10 - 1/4

Convert the fractions into decimals:

3/10 = 0.3

1/4 = 0.25

substitute back into the equation and solve:

0.3 - 0.25 = 0.05

convert back into fractions:

0.05 = 1/20

can someone please help me .

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Step-by-step explanation:

.what is formula to calculate sqare

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Answer:

Area = a2

a = length of side

A= area of size area=a2

36=q^2 Find the solution to the equation

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Answer:

i think its 18

(also if you dont mind can you please help me with my question)

To answer your question it should be 18

Given the following formula, solve for t.
V = u + at.
A. t= a(v – u)
B. t = v-u/a
C. t=v+u/a
D. t =a(v + u)

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So start manipulating the formula by adding/ subtracting/ multiplying/ dividing until you get the variable you want alone.
So
V=u+at
V-u=at
t= V-u/a
The answer is B.

X+1
If g(x) =
X-2 and h(x) = 4 - X, what is the value of (g•h)(-3)?
8/5
5/2
15/2
18/5

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Answer: the correct answer is: 8/5

Step-by-step explanation: just took the quiz.

Is there a difference between 6.780 and 6.78? Why or why not?

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Answer:

Step-by-step explanation:

No there is no difference because in a decimal the zero's don't matter, they can go on infinitely but if the numbers above zero are the same and in the same order then the zero's don't make any difference.

4 1/8 (3x−4)=33
pls find x thank you

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Answer:x=3 2/3

Step-by-step explanation:

Answer:

the answer is 23.3

Step-by-step explanation:

In the expression 3v – 8, what is the variable?

Answers

Answer:

V is the variable

Step-by-step explanation:

Answer:a. v

Step-by-step explanation:

Given

Required

Identify the variable

Literary, variable means things that change in values;

Going by this definition, we have that:

3 -> This is not a variable because its value will always be 3

v -> This is a variable because its value can change once its value changes, the result of the expression will also change

- -> This is not a variable; it is an arithmetic operator to subtract

8 -> This is not a variable because its value will always be 8

Take for instance

When

Notice that there's a difference in both results;

This is as a result of v being a variable

Step-by-step explanation:

A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost can be represented by this equation: = 12 + • , where is the additional charge per minute, and is the number of minutes used. Which equation can be used to find the number of minutes a customer used if we know and ? a. = C-12/a b. =(−12)− c. =−12 d. = −12

Answers

Answer:

-12

Step-by-step explanation:

i had got it right yay

Answer:

Step-by-step explanation:

m=c-12/a

I had this on a test and I got it right

Anyone? Know how to do this

Answers

Answer:1=£34.2

2=£66.6

3=£9.18

4=£13,158

Step-by-step explanation:

We are decreasing the prices by 10%

1.£38

£38 = 100%

? =90%

90×38÷100=£34.2

2.£74

£74=100%

? = 90%

90×74÷100=£66.6

We are increasing the the salaries by 2%

1.£9

£9=100%

? =102

102×9÷100=£9.18

2.£12900

£12900=100%

? =102%

102×12900÷100=£13,158

A donut shop made 12 dozen donuts to give to a school’s math club.

Which expression represents how many donuts each student would get if the donuts were equally distributed and there were x
x
students in math club’s

Answers

Answer:

Number of donuts each student get = 144 / x

Step-by-step explanation:

Given:

Number of donuts = 12 dozen

Number of students = x

Find:

How many donuts each student get

Computation:

Total number of donuts = 12 × 12 = 144

Number of donuts each student get = Total number of donuts / Number of students

Number of donuts each student get = 144 / x

Edwardo has $24 saved. If he saves $8 each week, how much money will he have in 5 weeks ?

Answers

Answer:

64$

Step-by-step explanation:

Ifshe saved 8$ each week then that would equal to 40

But by adding the 24$ already saved the total amount would equal to 64$

i need help showing my answer -7/12 + 1/2

Answers

Answer -1/12

Step-by-step explanation:

-7/12 + 1/2 cannot be added until you change 1/2 into 6/12.

To change 1/2 to 6/12, you have to multiply 1/2 by 6 because you want the same denominator. Since you can't just make a whole new fraction by changing the denominator, you have to multiply the numerator by 6 as well.

After changing the fraction, you should get -7/12 + 6/12.

now you can just add the numerators and denominators together and get -1/12!

Simplify 3/100 +33/100, correct to 1 decimal place.

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Answer:

Step-by-step explanation:

3/100+33/100=36/100=0.36≈0.4(round to one decimal place)

what is the value of x ?

Answers

Step-by-step explanation:

2(2x - 6) + 2(x + 3) = 26

4x - 12 + 2x + 6 = 26

4x + 2x -12 + 6 = 26

6x - 6 = 26

6x = 26 + 6

6x = 32

x =32/6

x = 5.3333

Answer:

Step-by-step explanation:

2(2x -6) + 2(x + 3) = 26

4x - 12 + 2x + 6 = 26

6x - 6 = 26

6x = 32

x = 32/6= 16/3

Other Questions

Assume that you are a new analyst hired to evaluate the capital budgeting projects of the company which is considering investing in two CPEC projects, Expansion Zone North and Expansion Zone East. The initial cost of each project is Rs. 10,000. Company discount all projects based on WACC. Further, all the projects are equally risky projects and the company uses only debt and common equity for financing these projects. It can borrow unlimited amounts at an interest rate of rd 10% as long as it finances at its target capital structure, which calls for 50% debt and 50% common equity. The dividend for next period is $2.0, its expected that they will grow at the constant growth rate of 8%, and the companys common stock sells for $20. The tax rate is 50%. The cash flows of both the projects are given in table below: Time Expansion Zone North Cashflows (amount in Rs.) Expansion Zone East Cashflows (amount in Rs.) 0 - 10,000 - 10,000 1 6,500 3,500 2 3,000 3,500 3 3,000 3,500 4 1,000 3,500 Carefully analyze the above table and answer the following questions in detail. I. Calculate the weighted average cost of capital for this firm? (2.5 marks) II. Compute each projects IRR, NPV, payback, MIRR, and discounted payback. (2.5 Marks) III. Which project(s) should be accepted if they are mutually exclusive? Explain (1.5 Marks) IV. Which project(s) should be accepted if they are independent? Explain (1.5 Marks) Keith wentfor drive in his new car he drove for 86.4 miles at a speed of 54 mph for how many hours did he drive Which sentence contains an inappropriate shift in verb tense? Maria was thinking about her dance solo and failed to see the bus as it came around the corner. Maria, thinking about her dance solo, failed to see the bus as it came around the corner. Maria, thinking about her dance solo, fails to see the bus as it came around the corner. As Maria thought about her dance solo, she failed to see the bus as it came around the corner. Please somebody help I have to redo 11th grade if i dont complete.. brainliest if you can help :( Find the coordinates of n if n is exactly halfway between m (-10,-13) and d (-7,-7) what is the square root of -1 Read the passage about tzi the Iceman.Half an hour after tzi dined, the killer came along and shot him in the back from a distance of almost 100 feet. The arrow went under his left armpit . . . a wound that would have been quickly fatal and probably not treatable even in modern times, especially where it happened. By the angle of the wound, he was either shot from below and behind, or he had been bent forward when he was hit from above and behind."Who Killed the Iceman? Clues Emerge in a Very Cold Case, Rod NordlandWhich strategy is the best to determine the viewpoint of the author of the passage?Examine Nordlands research about tzi.Help Nordland find out who really killed tzi.Interview Nordland about what happened to tzi.Analyze Nordlands reason for writing about tzi.I'm giving 75 points The price of an item is $6.15. You want to buy two of the items and give the cashier a $10 and a $5 bill. What is the change? Find Y plsThank you PLS HELP ASAP OR I WILL FAIL How much time will Alex need to walk to his school, which is 2 1/4 miles away from his house, if he would walk with the speed of 2 7/10 mph Your travel plans are more likely to look like a rough list of ideas than adetailed itineraryMeaning One half of g plus thirty-two is asmuch as the sum of fifteen and six timesg. What place does general zaroff tell rainsford to avoid ? Why ? Change the stimulus to read: Edward Jenner? s smallpox inoculation experiment was based on his observation that dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation? He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid. He tested different existing inoculations to see which one was most effective in preventing smallpox. He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox. He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox. Find the coordinates of the midpoint of TU for T(3,1) and U(5,3) Which account would be listed on a post-closing trial balance?a. Sales Revenue b. Depreciation Expense c. Retained Earnings d. Income Tax Expense. Hi i understand that the answer to the missing coordinate is 0 but can somebody explain to me how to get there? When i try to do the problem I get 5 even though the correct answer seems to be 0. Please help me. Is -7 + 28 positive or negative? How do viruses spread globally? Provide at least 2 ways Find the slope of the line that passes through (-4.5, 7/2 ) and (3, 3.5).-1/60undefined-6

Which expression is a representation of the following: +4 -7 A.4+ (-7) = - 3 B.7-4=3 C.4 + 7 = 11 D.4 + (-7) = 3

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Which expression is a representation of the following:
+4
-7
A.4+ (-7) = - 3
B.7-4=3
C.4 + 7 = 11
D.4 + (-7) = 3