3. The sum of two numbers is 30 and their difference is 12. Find the two numbers.

Answers

Answer 1

Answer:

I don't know is it 12 and 16 I'm not sure

Answer 2

Answer:

The two numbers are 21 and 9

Step-by-step explanation:

Let the two numbers be a and b

The sum of these numbers is 30

a+b=30

The difference between these numbers is 12

a−b=12

                             ―――――――――

I.  You can solve this by logic.

If the two numbers were exactly equal, then they would both be 15.

15+15=30

But the difference would be 0, not 12

So if you lowered b by one point, and added that to a, then the two numbers would be 16 and 14, and the difference would be 2.

So you can see that for every point you subtract from b to add to a, you increase the distance between them by 2

So, by logic, you need to subtract 6 points from b and add them to a to create a difference of 12

(15+6) minus (15−6) gives a difference of 12

.m21.....−mm∩9       =  12

Answer:

The two numbers are 21 and 9

                   ―――――――――

II.  You can solve this by math

These are simultaneous equations, so you can solve them by math.

.a+b=30

.a−b=12

――――――

2a +0=42

.a         =21 ← same answer


Related Questions

What is the sum of 2 + 0.42 + 1.8?

Answers

Answer:

4.22

Step-by-step explanation:

2 + 0.42 + 1.8 = 4.22

Please mark as brainliest! <3

Answer:

The sum of 2 + 0.42 + 1.8 is 4.22

hope it helps :)

what is the remainder for 192,856÷37​

Answers

Answer:

5212 12/37 is the answer

Hopes this helps:

Answer: 5212 with the remainder of 12

What is 11.3 divided by 3

Answers

This can easily be done by dividing the 3 with 11 which gives you the answer below!

Answer:

it's 3.7666 and so on. It's a repeating decimal.

Step-by-step explanation:

1. How many calories are in the smoothie that
contains 51 grams of sugar?

2. How many grams of sugar are in the smoothie
that contains 250 calories?

Answers

Answer:

responde la pregunta tú sólo déjame en paz

The 51 gram of sugar has 204 calorie and there is 62.5 gram of sugar in 250 calories.

What is a Measurement unit?

A measurement unit is a unit to measure certain quantities.

For example, the mass can be measured in kilograms, length can be measured in meter and time can be measured in seconds.

To find the measurement of a new quantity knows units can be used in operation. As to find the unit for speed we use m/s as a unit, where, m is the unit of distance and s is the unit of time.

Solve these problems using the conversion unit for calorie to gram.

(1) 1 gram = 4 calories

Then, 51 grams = 51 × 4

                         = 204 calories

(2) 4 calorie = 1 gram

    1 calorie = 1/4 gram

    250 calorie = 1/4 × 251

                        = 62.5 gram

Hence, smoothie containing 51 gram sugar has 204 calories and in 250 calories of smoothie there is 62.5 gram of sugar.

To know more about measurement unit click on,

https://brainly.com/question/15402847

#SPJ2

     

2+2?
5+6?
3+0? Pl tew awser

Answers

The answers are
2+2= 4
5+6= 10
3+0= 3

What equation is the equivalent to 2x^2-24x-14=0

Answers

Answer:

2(x^2-12x-7)

Step-by-step explanation:

PLEASE HELP ITS URGENT
DONT GUESS
WILL MARK BRAINLIEST

Answers

Answer:

Listed below:

Step-by-step explanation:

P: 192

A:2079

B. Area

C. Perimeter

Hope this helps :)

A state began an effort to increase the deer population. In year 2 of the effort, the deer population in a state forest was 3,000. In year 4, the population was 4,320.

The explicit rule for the geometric sequence is aₙ =

Answers

Step-by-step explanation:

i guess math is the hardest subject

Answer:

The answer is aₙ = 2,500 (6/5)^n-1

Hope i helped, have a wonderful day! :D

Reall quick pls! Thank you.

Answers

Answer:

1/6 are oranges bc if half are apples 1/2 and 1/3 is bannas we need to make those fraftions match so we multiply 1/2 by 3 and 1/3 by 2 giving us a fraction over 6 which then we add what we already know so 3/6 is apples and 2/6 is bannas we add them together we get 5/6 which leaves us with 1/6 oranges

Step-by-step explanation:

10 minus the product of 5 in the number G is more than 80

Answers

Answer:

10-5g >80

Step-by-step explanation:

10-5g >80

This is the    statment if u want it.

Will the sum of 56+ (-56) be Positive negative or zero

Answers

0 is the answer! U can type it in the calculator

Answer:

zero

Step-by-step explanation:

56+(-56),thus

the negative overcomes the positive,

56-56

0

Lizzy ran 2/3 of an hour for four days. How many total hours did Lizzy run?

Answers

1/4 miles/ hour.


I hoped it helped

Answer:

Well lizzie stevens from Greys better stop running if she got cancer

Step-by-step explanation:

(25 POINTS!) A right triangle was rotated to create this figure. What is true about the axis of rotation? The picture is shown below.
A. It lies on the hypotenuse of the right triangle.
B. It lies on a leg of the right triangle.
C. It is parallel to a leg of the right triangle, but is separate from the right triangle.
D. It is parallel to the hypotenuse of the right triangle, but is separate from the right triangle.

Answers

Answer:

It lies on the hypotenuse of the right triangle.

Step-by-step explanation:

It lies on the leg of the right triangle. Then the correct option is B.

What is Geometry?

One of the first areas of mathematics is geometry, along with maths. It is preoccupied with spatial characteristics including the separation, form, size, and relative placement of objects. A geometer is a mathematician who specializes in shape.

A right triangle was rotated to create this figure.

Since the given figure is a right triangle that has been rotated, the axis of rotation must pass through the vertex of the right angle, which is also the intersection of the perpendicular leg. Therefore, the axis of rotation must lie on the leg of the right triangle.

It lies on the leg of the right triangle. Then the correct option is B.

More about the geometry link is given below.

https://brainly.com/question/7558603

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HURRY I NEED HELP ILL GIVE YOU THE BRAINLIEST COME ON PLEASE!!!!!!!!

Answers

The answer is a = 132.93 cm2

Answer:

502.5pi or 1578.1415

Step-by-step explanation:

find area of one triangle (BH divided by 2), then multiply it by two since there are two, then find area of circle(pir^2),  divide in half because it is a semi-circle, add the areas together

Please help ASAP. Thanks so much

Answers

Answer:

I would say D.) 6

Step-by-step explanation:

The positive side of the graph is the right side of the y-axis.

The line passes through the point (6,0)

Answer: 6

Step-by-step explanation: The x-intercept is the point where the parabola crosses the x-axis and notice that this parabola crosses the x-axis.

In this case, the positive x-intercept is 6.

Carlos thinks of a number. When he adds 17 to it, the result is 45. What is the number that Carlos thought of?

Answers

28 45-17=28. just simple subtraction

wat is x in 1/3x - 11 = 5

Answers

=48

Multiply by 1

Add 1 1 11 11

to both sides of the equation

Answer:

The answer is 48

Step-by-step explanation:

First, add 11 to both sides

5 + 11 = 16

1/3x = 16

Next, times 16 by 3

16 times 3 = 48

Check!

1/3(48) = 16

16 - 11 = 5

X = 48

Please help with either of these questions. Put the answer in the comments please

Answers

Answer:

2) distance = 4 km

Displacement = 4 km east

3) distance = 35 km

Displacement = 5 km north

Step-by-step explanation:

2. He runs for 3 km in the east direction and then stops.. He now runs another 1 km in the same direction then stops.. Thus,

Total distance covered = 3 + 1 = 4 km

Total displacement is how far he is from his starting point = 3 + 1 = 4 km east

3) Runs 20km north and then runs 15 km back from starting point.

Thus;

Total distance covered = 20 + 15 = 35 km

Total displacement is distance from starting point = 20 - 15 = 5 km north

Subtracted because an opposite direction was taken after the 20km back to her starting point.

What is sum of the vectors, (4.-5) and (10,2)?

(-6, 7)
(14,-3)
(14,7)
(15,6)

Answers

Answer:

(14,-3)

Step-by-step explanation:

To sum vectors, simply sum values at each position.

The sum is (4+10, -5+2) = (14,-3)

it's been a while since i learned this and i think it'll be (14,-3).

Answers
- The median of the date for Store 2 is greater than the median of the date for Store 1

-the mode of the date for Store 1 is less than the mode of the date for Store 2

-the mean of the data for Store 1 is less than the mean of the data for Store 2

-The range of the data for Store 1 is greater than the range of the data for Store 2 ​

Answers

Answers
- The median of the date for Store 2 is greater than the median of the date for Store 1

-the mode of the date for Store 1 is less than the mode of the date for Store 2

-the mean of the data for Store 1 is less than the mean of the data for Store 2

-The range of the data for Store 1 is greater than the range of the data for Store 2

The ratio of swordfish to marlins caught on a deep sea fishing trip was 20 to 15. If 24 marlins were caught, how many swordfish were caught? Complete the ratio table.

Answers

Answer:

39

Step-by-step explanation:

I NEED EQUATIONS FROM THESE POINTS, PLEASE HELP.

Answers

Answer:

Hey There your answers are in the below!!

Step-by-step explanation:

# 5

M = -5

# 6

= 0

#7

= 180

# 8

= 0

- Me!

Jaden earned $54 every nine days based on this information how many days will it take Jaden to earn $96​

Answers

Answer:

it will take her 16 days

Step-by-step explanation:

Write an equation that has vertical asymptotes at x=7 and x= -2 and a horizontal asymptotes at y= 1

Answers

Answer:

Step-by-step explanation:

(1+(x-7)(x+2))/((x-7)(x+2))

(x^2-5x-13)/(x^2-5x-14)

what is the shape of a normal curve in statistics​

Answers

Answer:

oval yeah oval

Step-by-step explanation:

Thane Company is interested in establishing the relationship between electricity costs and machine hours. Data have been collected and a regression analysis prepared using Excel. The monthly data and the regression output follow: Month Machine Hours Electricity Costs January 2,000 $ 18,950 February 2,400 $ 22,100 March 1,400 $ 14,050 April 2,600 $ 24,100 May 3,300 $ 28,800 June 2,800 $ 23,100 July 3,600 $ 25,300 August 3,000 $ 23,300 September 1,500 $ 16,600 October 3,200 $ 27,100 November 4,200 $ 32,100 December 3,700 $ 28,300 Summary Output Regression Statistics Multiple R 0.960 R Square 0.921 Adjusted R2 0.913 Standard Error 1,545.17 Observations 12.00 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 7,465.99 1,566.61 4.77 0.00 3,975.37 10,956.62 Machine Hours 5.76 0.53 10.78 0.00 4.57 6.95 If the controller uses the high-low method to estimate costs, the cost equation for electricity costs is: (Round intermediate calculations to 2 decimal places.)

Answers

Answer:

If the controller uses the high-low method to estimate costs, the cost equation for electricity costs is "Total cost = $5,010 + ($6.45 * Machine hours)".

Step-by-step explanation:

Note: The data needed to estimate costs using the high-low method is merged together. It is therefore sorted before answering the question as follows:

Month          Machine Hours          Electricity Costs

January              2,000                           $18,950

February            2,400                           $22,100

March                 1,400                            $14,050

April                   2,600                            $24,100

May                    3,300                            $28,800

June                   2,800                           $23,100

July                    3,600                            $25,300

August               3,000                            $23,300

September         1,500                             $16,600

October             3,200                             $27,100

November         4,200                             $32,100

December         3,700                             $28,300

The explanation of the answer is now provided as follows:

Step 1: Calculation of variable cost per hour

From the data above, the highest Machine Hours and Electricity Costs occur in November, while the lowest occur in March. Therefore, we have:

Variable cost per hour = (Highest Electricity Costs - Lowest Electricity Costs) / (Highest Machine Hours - Lowest Machine Hours = ($32,100 - $14,050) / (4,200 – 1,400) = $18,050 / $2,800 = 6.44642857142857

Rounding to 2 decimal places as required, we have:

Variable cost per hour = $6.45

Therefore, the variable-cost components using the high-low method is $6.45.

Step 2: Calculation of total fixed cost

The formula for calculating the total cost is given as follows:

Total cost = Total Fixed Cost + Total Variable Cost ................. (1)

Where;

Total Variable Cost = Variable cost per hour * Machine hours at a particular Electricity Costs

Using highest levels of activity and substitute into equation (1), we have:

$32,100 = Total Fixed Cost + ($6.45 * 4,200)

Total Fixed Cost = $32,100 - ($6.45 * 4,200) = $32,100 - $27,090 = $5,010

Therefore, the fixed-cost components using the high-low method is $5,010.

Step 3: Derivation of the cost equation for electricity costs

The cost equation for electricity costs can be obtained based on the total cost function given in equation (1) above, where:

Total Fixed Cost = $5,010

Total Variable Cost = Variable cost per hour * Machine hours = $6.45 * Machine hours

Substituting the values into equation (1), we have:

Total cost = $5,010 + ($6.45 * Machine hours)

Therefore, if the controller uses the high-low method to estimate costs, the cost equation for electricity costs is "Total cost = $5,010 + ($6.45 * Machine hours)".

Help&EXPLAIN
==============

Answers

Answer:

A = 108 in.²

Step-by-step explanation:

The figure can be decomposed into 3 rectangles.

✔️Area of rectangle 1 = L*W

L = 8 in.

W = 6 in.

Area = 8*6 = 48 in.²

✔️Area of rectangle 2 = L*W

L = 10 in.

W = 4 in.

Area = 10*4 = 40 in.²

✔️Area of rectangle 3 = L*W

L = 5 in.

W = 4 in.

Area = 5*4 = 20 in.

✔️Area of the irregular figure = 48 + 40 + 20 = 108 in.²

This is geometry help 25 points!

Answers

Answer:

x=14

y= 12.12436 = 7√3

Step-by-step explanation:

Hope this helps:)

what is Z x-2, when x=2 and z=2

Answers

Answer:

2

Step-by-step explanation:

2x2-2=2

2 x 2-2 because everytbing is just two

The point-slope form of the equation of the line that passes through (-4, -3) and (12, 1) is y - 1 = 1/4(x- 12). What
is the standard form of the equation for this line?
X - 4y = 8
x -4y = 2
4x - y = 8
• 4X -y=2

Answers

Answer:

ffffffffff

Step-by-step explanation:

fffffffffffffff

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