Decimal Operati
1. Find the sum of the expression.
0.975 + 3.8

Answers

Answer 1

Answer:

4.775

Step-by-step explanation:

Answer 2

Answer:

4.775

Step-by-step explanation:

Add

0.975

3.800 =

4.775

       


Related Questions

the ratio of potatoes to turnips is 1:1 if there are are 473 potatoes how many turnips are there​

Answers

Answer:

473 turnips

Step-by-step explanation:

well if its 1 to 1 that means how ever meany you have of one you will have the same exact amount of the other food

473x1 = 473x1

Final answer:

To find the number of turnips, set up a proportion using the given ratio and cross multiply to solve for the number of turnips.

Explanation:

To find the number of turnips, we can set up a proportion using the given ratio:
Number of potatoes / Number of turnips = Ratio of potatoes to turnips.
Since the ratio of potatoes to turnips is 1:1, the proportion will be:
473 / Number of turnips = 1 / 1.

To solve for the number of turnips, cross multiply:
473 * 1 = Number of turnips * 1.
Number of turnips = 473.

Therefore, there are 473 turnips in this scenario.

The owner of a new restaurant is ordering tables and chairs. he wants to have only tables for two and tables for 4. the total number of people can be seated in rest is 120, then write an equation to represent the situation. What do the variables represent?

Answers

Answer:

4 M + 2 N = 120

Step-by-step explanation:

If we name "M" the number of tables for four people, and "N" the number of tables for two people, then the total number of people to be seated using M tables (of four people) would be the product "4 * M".

Similarly, the total number of people to be seated if the owner has N number of two person tables, would be: "2 * N".

Therefore, if the owner has M four people tables and N two person tables, the total number of people seated at the restaurant would be the addition:

4 * M + 2 * N. Since he wants this number to be 120, we complete the equation making this expression equal to 120:

4 * M + 2 * N = 120

Final answer:

The equation that represents this situation is 2x + 4y = 120, where x represents the number of tables for two and y represents the number of tables for four. Thus, this mathematical equation reflects the owner's seating arrangement plans for his restaurant.

Explanation:

Let's use x to represent the number of tables for two and y to represent the number of tables for four. Since each table for two can seat 2 people and each table for four can seat 4 people, the total number of people that can be seated is 2x + 4y. The owner of the restaurant wants to seat a total of 120 people, so the equation that represents this situation is 2x + 4y = 120.

In this equation, x and y are the variables. The x value represents the number of tables for two and the y value represents the number of tables for four.

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Ingrid has $30 to buy oil paints for her painting class. Each tube of paint
costs $9. How many tubes can she buy? Do not include units in your answer.

Answers

Answer:

3

Step-by-step explanation:

She has enough money to buy 3 tubes which leaves with $3 for whatever else she desires

She could buy 3 oil paints

Consider this function. f(x) = 2x - 2 Which graph represents the inverse of function f?

Answers

Answer:

W

Step-by-step explanation:

If its the graphs I got then yeah

The Graph that represents the inverse of function f is attached below.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

We have been given a function of x as; f(x) = 2x - 2

If function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is

y = 2x - 2

x = 2y - 2

x + 2 = 2y

y = (x + 2)/2

It simply means, inverse of 'f' is undo operator, that takes back the effect of 'f' function here.

To Graph the inverse, Simply use a graphing calculator and the correct graph is attached below.

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10. A square picture has a 1-inch frame around it. If the
area of the frame alone is 80 in.2, what is the area of the
picture?

Answers

Answer:

361 sq, inches.

Step-by-step explanation:

Let us assume that the dimensions of the square picture are P in × P in.

So, the area of the picture alone is, A = P²

Now, if the photo has a frame of 1 inch wide, then the dimensions of the photo with frame are (P + 2) in × (P + 2) in.

So, the area of the photo with frame is A' = (P + 2)(P + 2) = (P + 2)²

Now, the area of the frame alone is 80 sq. inches.

Hence, A' - A = 80

⇒ (P + 2)² - P² = 80

⇒ 4P + 4 = 80

⇒ 4P = 76

P = 19 inches.

So, the area of the picture is = 19² = 361 sq. inches. (Answer)

361 sq, inches.

Step-by-step explanation:


If f (x) = -3x-5 and g(x) =4x-2 find (f+g)(x)

Answers

Answer:

C. (f + g)(x) = x - 7

Step-by-step explanation:

[tex](f+g)(x)=f(x)+g(x)\\\\\text{Substitute}\ f(x)=-3x-5\ \text{and}\ g(x)=4x-2:\\\\(f+g)(x)=(-3x-5)+(4x-2)\qquad\text{combine like terms}\\\\(f+g)(x)=(-3x+4x)+(-5-2)\\\\(f+g)(x)=x-7[/tex]

A carpenter charges $30 per hour for up to eight hours each day and increases this rate by 50% for additional hours. The carpenter will not work more than ten hours per day. If this daily cost function is modeled by y = f(x) and graphed, which statement is not correct?
A) f(0) = 0, f(8) = 240, and f(10) = 330.
B) The domain is [0, 10] and the range is [0, 330].
C) The graph is increasing on the interval (8, 10) with a slope of 45.
D) If a $20 trip charge is added, the new x-intercept will be (20, 0).

Answers

Answer:

D. If 20$ a trip charge is added, the new x-intercept will be (20,0)

This statement is false. The original graph started at (0,0), the x-intercept. Adding a 20$ trip charge moves the graph up 20 so there would not be an x-intercept.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Which graph shows the solution set to this inequality? 4x < 12

Answers

Answer:

x=1,2

Step-by-step explanation:

we show that 4x is <12

if x=1,,,4x=4*1=4

if x=2,,,4x=4*2=8

if x=3,,,4x= 4*3=12

so 1 &2 is right ans

Higher Order Thinking
Mrs. Dryson
divided her collection of 52 glass bears
into equal groups. She had 1 bear
left over. How many groups did
Mrs. Dryson make? How many bears
are in each group?

Answers

Answer:

There are 26 glass bears in each group and there are 2 equal groups.

Step-by-step explanation:

i hope that help but your problem was kind of werid at first but i foud the answer i hope you enjoy!!!...

Choose a system of equations with the same solution as the following system:

6x + 2y = −6
3x − 4y = −18

---------------------

A: 8x + 4y = −4
17x + 2y = −28

B: 12x + 4y = 12
21x + 2y = −36

C: 6x + 8y = −36
15x + 6y = −60

D: 6x + y = 15
15x − y = −9

Answers

Answer

______________

The same solution of the given system of equations will be same as the solution of below system of equations;

⇒ 8x + 4y = −4

17x + 2y = −28

Option A is true.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The System of equation is,

6x + 2y = - 6   ..(i)

3x - 4y = - 18   ..(ii)

Now,

Solve the given system of equation as;

The System of equation is,

6x + 2y = - 6   ..(i)

3x - 4y = - 18   ..(ii)

By equation (i);

6x + 2y = - 6  

2(3x + y) = - 6

3x + y = - 3  ..(iii)

Subtract equation (ii) from (iii), we get;

3x - 4y - (3x + y) = - 18 - (-3)

3x - 4y - 3x - y = - 18 + 3

- 5y = - 15

y = 3

And, By equation (i), we get;

6x + 2y = - 6  

6x + 2 × 3 = - 6

6x + 6 = - 6

6x = - 6 - 6

6x = - 12

x = - 2

Thus, The solution of given system of equation are;

x = - 2 and y = 3

Now,

Substitute the value of x and y in all the given options and find the same solution of given system of equation as;

A: 8x + 4y = −4

17x + 2y = −28

Substitute the value of x = - 2 and y = 3;

8x + 4y = −4

8 × - 2 + 4 × 3 = - 4

- 16 + 12 = - 4

- 4 = - 4

17x + 2y = −28

17 × - 2 + 2 × 3 = - 28

- 34 + 6 = - 28

- 28 = - 28

Thus, This system of equation has same solution.

Therefore, The same solution of the given system of equations will be same as the solution of below system of equations;

⇒ 8x + 4y = −4

17x + 2y = −28

Option A is true.

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WILL MARK BRAINLYEST
500x 300 divided by 100

Answers

Answer: 1,500

Step-by-step explanation:

500 times 300 is 150,000

Divide the product by 100 is 1,500

a first plus twice a second number is one. twice the first number plus the second totals fourteen.​

Answers

Answer:

First Number = 9

Second Number = -4

Step-by-step explanation:

Let the first number be "x" and the 2nd number be "y"

First number PLUS twice 2nd is 1, so we can write:

x + 2 y = 1

Twice First number PLUS the 2nd number is 14, so we can write:

2x + y = 14

We can write:

y = 14 - 2x

We put this into 1st equation and solve for x:

x + 2y = 1

x + 2(14 - 2x) = 1

x + 28 - 4x = 1

-3x = -27

x = 9

And now y:

y = 14 - 2(x)

y = 14 -2(9)

y = 14 - 18

y = -4

First Number = 9

Second Number = -4

answer this for me please and quick!!​

Answers

0.90 x 27 = 24.3

you can multiply or put it in a proportion

Answer:

24.3

Step-by-step explanation:

what is the probability that a randomly-selected driver fatality who was female was less than 16 years old the probability that a randomly-selected driver fatality who was female was less than 16 years old is approximately _____.​

Answers

Answer:

0.19%

Step-by-step explanation:

To know what is the probability that a female who is less than 16 in involved in a driver fatality, we have to compare the cases of fatalities for females who are less than 16 years old, with the total cases of fatalities, commited by all kind of persons. Then, to know the proportion of the population of driver fatalities represented by female who are less than 16, we divide the amount of cases that happend under the characteristics mentioned (females <16) and the total amount of fatalities: [tex]\frac{100}{Total_{fatalities}} =\frac{100}{141+100+4970+2331+11009+....} =\frac{100}{52693}=0.0019=0.19\%[/tex], which is the probability that a randomly-selected driver fatality were commited by a females who is less than 16.

Simplify 143.87x34.65x87.78+12.63-19.63 to the nearest tenth.

Answers

Answer:

437584.68

Step-by-step explanation:

Answer:

Step-by-step explanation:

437584.7

kathy has a garden that is 15 feet wide and 20 feet long.she will plant 1 bulb per square foot.each bang contains 9 bulbs.how many bag does kathy need

Answers

Answer:

2 tomato plants will left with Clara.

Step-by-step explanation:

Length of the garden = l = 7 feet

Width of the garden = w = 4 feet

Area of the garden = l × w

Area occupied by single tomato plant =

Number of tomato plants in the garden :

tomato plants

Number of tomato Clara has is 30

Number plants leftover with Clara = 30 - 28 = 2

2 tomato plants will left with Clara.

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Step-by-step explanation:

Answer:

34 bags

Step-by-step explanation:

Area =L*W

20*15 = 300 square feet

She needs to plant 300 bulbs

300/9 = 33.33333(33(1/3) bags

Since she need to purchase bags containing 9 bulbs each, she needs to buy 34 bags (It ill be 6 left since 34 bags =306 bulbs)

If she buys 33 bags  it will be only 297 (3 short)

Haley wrote the expression 24m – 6n. Kensi wrote an expression equivalent to Haley’s. Which expression could Kensi have written? 2(6m – 4n) 4(6m – 6n) 6(4m – n) 12(2m – 2n)

Answers

Answer:

C) 6(4m-n)

Step-by-step explanation:

Because 6(4m-n)=24m-6n.

Each gift bag has to contain atleast 15 candies and/or chocolate was total worth must not exceed 30 dollars. Each candy costs 1 dollar while each chocolate costs 3 dollars.

a. Write a system of inequalities that shows the various ways candies and chocolates can be combined in the bag.

b. Graph.

c. Write 3 possible combinations of candies & chocolates that can be placed in the bag.

Answers

Answer:

the answer is b

Sadie finished her math test in sixteen minutes less than three times the amount of times it took her friend Laura to finish.if their combined times was 1 hour and 8 minutes,how long did it take Sadie?

Answers

Answer:

Sadie took 47 minutes to finish her test.

Step-by-step explanation:

Let Laura's time be x minutes.

Then we have:

x + 3x - 16 = 68

4x = 84

x = 21 minutes.

So Sadie took 3(21) - 16 = 63-16

= 47 minutes.

PLEASE ANSWER NOW

Stephen, Paul & Bridget share some money in the ratio 3 : 4 : 2. In total, Stephen and Bridget receive £50. How much does Paul get?

Answers

Answer:

The money receive by Paul is  [tex]\pounds 40[/tex].

Step-by-step explanation:

Given as :

The ratio of share of money among three people as

Stephen : Paul : Bridget = 3 : 4 : 2

The total money receive by Stephen and Bridget = [tex]\pounds 50[/tex]

Let The money receive by Stephen = 3 x

Let The money receive by Paul = 4 x

Let The money receive by Bridget = 2 x

Now, According to question

The total money receive by Stephen and Bridget = [tex]\pounds 50[/tex]

I.e 3 x + 2 x =  [tex]\pounds 50[/tex]

i.e 5 x =  [tex]\pounds 50[/tex]

∴    x = [tex]\frac{\pounds 50}{5}[/tex]  

    x =  [tex]\pounds 10[/tex]

So, The money receive by Stephen = 3 × [tex]\pounds 10[/tex] = [tex]\pounds 30[/tex]

Let The money receive by Paul = 4 × [tex]\pounds 10[/tex] = [tex]\pounds 40[/tex]

Let The money receive by Bridget = 2 × [tex]\pounds 10[/tex] = [tex]\pounds 20[/tex]

Hence The money receive by Paul is  [tex]\pounds 40[/tex]. Answer

Drag the cards to create a three -digit number that matches these rules


Note:not all cards will be used

Answers

Selection of the digits, In accordance with the rules results to

671

What is place value

Place value is the value of a digit based on its position within a numeral, especially in the base-10 (decimal) number system.

Each digit in a number has a place value, and the position of the digit determines its contribution to the overall value of the number.

The digit in the hundreds place (6) comes first. Next is the tens digit (7) then lastly the ones digit (1)

This results to 671

Carolina paid $15.80 for 4 hamburgers.


What is the unit rate representing the cost of 1 hamburger? PLEASE HELP!!!!!!!!!!!!!!!1

Answers

Answer:

The cost of one hamburger is $3.95.

Step-by-step explanation:

15.80/4=3.95

Answer:

$ 3.95

Step-by-step explanation:

it is 3.95 because you divide 15.80 by 4

A box of 42 chocolates contains milk and dark chocolates in the ratio of 3:4. How many chocolates of each type there are?

Answers

Answer:

18 Milk Chocolates: 24 dark chocolates

Step-by-step explanation:

The total number of chocolates are 42

So you have Milk: Dark, in the ratio 3:4

You do 3+4 which = 7

You then divide the total ratio outcome by the total number

So you do, 42/7 =6

You then do 6 and put this into the ratio

So you do, 3x6 and 4x6, which = 18 and 24

To check if your answers correct add the ratio outcomes

And If you add 18 and 24 together, you should get your beginning total of 42

Which graph best represents the function f(x) = (x - 1)(x + 3)(x – 3)?

Answers

Answer:

The graph you posted was Incorrect! An easy way you can check is like this:

Insert the function "f(x) = (x - 1)(x + 3)(x – 3)" into desmos, you get this which should perfectly match the function shown.

The graph that represents the function is attached to the answer.

What is a Graph?

The graph is a mathematical representation of the relation between two objects.

It helps in determining the function that fits best for the data obtained.

A function is a mathematical statement that defines a relationship between a dependent and an independent variable.

A function always has a defined range and domain, domain is all the value a function can have as input and range is all the value that a function can give as output.

The function is f(x) = (x-1)(x+3)(x-3)

The graph for the function will be determined by plotting,

The graph is plotted and attached with the answer.

The parent function is a cubic function, which is also plotted along with the function graph.

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12. What is the equation of a line perpendicular to the x-axis that passes through the point (-2,-4)? What is the slope of
this line?
what answer?​

Answers

Answer: the vertical line with the equation "x=-2"

Step-by-step explanation:

if you are perpendicular to the x axis, you will be looking for vertical lines that pass through (-2,-4)

the vertical line with the equation "x=-2" will pass though the point because (-2,-4) has an x coordinate of -2

I dont understand how to answer this. I tried to find the second derivative. ​

Answers

Answer:

(B) π/12 + π/6 k

Step-by-step explanation:

Points of inflection are where f"(x) = 0 and changes signs.

f(x) = cos²(3x)

f(x) = (cos(3x))²

f'(x) = 2 (cos(3x))¹ × -sin(3x) × 3

f'(x) = -6 sin(3x) cos(3x)

Using double angle formula:

f'(x) = -3 sin(6x)

f"(x) = -3 cos(6x) × 6

f"(x) = -18 cos(6x)

0 = -18 cos(6x)

0 = cos(6x)

6x = π/2 + 2πk or 6x = 3π/2 + 2πk

We can simplify this to:

6x = π/2 + πk

x = π/12 + π/6 k

What is CD?
6 units
12 units
18 units
24 units​

Answers

Answer: 18 units

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

6 times 2 = 12

12+6=18

The difference of c and 13 is less than -19.

Answers

Answer:

If you want the inequality, c - 13 < -19

If you want the inequality simplified, c < -6

Given C is the midpoint of Ad and be

Answers

Answer:

By SAS rule

Step-by-step explanation:

Required to Prove

ABC is congruent to DEC

Given

C is midpoint of AD and BE

As C is the midpoint of both line segments

AC=CD

BC=CE

and ∠ACB=∠DCE(Vertically opposite angles)

⇒By SAS(side-AC and DC, angle-∠ACB,∠DCE,side-BC and EC) congruency rule

triangle ABC is congruent to triangle DEC

Can someone actually answer this question please QUICK

A+b=c>4
b=7
a= 2
what is c?

Answers

Answer:

9

Step-by-step explanation:

Final answer:

The value of c is found by adding a (2) and b (7) together, which equals 9.

Explanation:

The question a + b = c is asking for the value of c when a is 2 and b is 7. To find c, we simply add the values of a and b together. In mathematics, this is known as solving for the unknown variable.

In this case:

a + b = c
2 + 7 = c
c = 9

Therefore, the value of c when a is 2 and b is 7 is 9.

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