The mean of four numbers is 30. If three of the numbers are 12, 50, and 48, what is the fourth number?
A. 120
B. 10
C. 12
D. 30

Answers

Answer 1

Answer:

Here’s the answer:

Step-by-step explanation:

The sum of the four numbers divided by 4 is equal to the mean.

the sum/4 = mean

(12 + 50 + 48 + n)/4 = 30

(110 + n)/4 = 30

(110 + n) = 30 × 4

(110 + n) = 120

n = 120 - 110

n = 10


Related Questions


Which graph represents the solution to this system of inequalities?
y<-x-3
y> 2x-4
(Please set graph in 10x10 scale)!!(:

Answers

Answer:

Heres your answer graphed

Step-by-step explanation:

Lindsey spent a total of $47 on her mother for her birthday. She bought a $35 box of chocolates and
some balloons for $4 each. What is x, the number of balloons that Lindsey bought for her mother's
birthday?

This is the math problem
35+4x=47

Explain why is correct the word problem

Answers

Answer:

3 ballons

Step-by-step explanation:

47-35=12

4x3=12

ASAP PLZ
Melissa is driving on the highway at the legal speed of 65 mi/h. She notices there is an accident ahead approximately 200 feet away. Her reaction time is 0.75 of a second. Is she far enough away to bring the car to a safe and complete stop?
*Round your answers to 2 places after the decimal!
1 Reaction distance =
2 Breaking distance =
3 Total Stopping Distance =
4 yes or no

Answers

Answer:

You are asked to find the skid distance given the speed,

the drag factor, and the braking efficiency.

Step-by-step explanation:

Use the skid speed formula. S = √

_______

30Dfn

Substitute 50 for S, 1.2 for f,

and 0.9 for n. 50 =√

___________________

30 × D × 1.2 × 0.9

Simplify the expression under the radical. 50 = √

_______

32.4D

What is the cosine ratio of

Answers

Answer:

Therefore, the exact value of cos 30 degrees is written as 0.8660 approx. √3/2 is the value of Cos 30° which is a trigonometric ratio or trigonometric function of a particular angle

If f(x) = 3x +9 x when f(x) = 30

Answers

Answer:

[tex]x=5/2[/tex]

Step-by-step explanation:

When [tex]f(x)=30[/tex], we have [tex]3x+9x=30[/tex].

Combining like terms on the right side, we have [tex]12x=30[/tex].

Finally, dividing by [tex]12[/tex] we get [tex]x=30/12[/tex].

We note that [tex]30=6*5[/tex] and [tex]12=6*2[/tex], so [tex]30/12=5/2[/tex].

So, [tex]\boxed{x=5/2}[/tex] and we're done!

Examine the following budget:
Monthly Budget
Budgeted Amount
Actual Amount
Income
Wages
Savings Interest
$1150
$25
$900
$25
Expenses
Rent
Utilities
Food
Cell Phone
Savings for Car
$400
$100
$250
$75
$200
$400
$80
$200
$75
$200
Net Income
$30


What is the actual net income for the month? What, if any, changes would have improved the budget for the month?
a.
The actual net income for the month is -$30. No changes to the budget are necessary.

b.
The actual net income for the month is $30. No changes to the budget are necessary.

c.
The actual net income for the month is $30. More money could have been spent on food.

d.
The actual net income for the month is -$30. Less money could have been spent on food.




Please select the best answer from the choices provided


A
B
C
D

Answers

The answer is:D. The actual net income for the month is -$30. Less money could have been spent on food.

Answer:

Yes the answer is D. The actual net income for the month is -$30. Less money could have been spent on food.

Step-by-step explanation:

Just took the test on Edg. 2021

What is the solution to this equation?

7- 3√2-x=12

Answers

7-3/14-x



Solution:
7-3/2-x=12

7-3/14-x

The value of x is -(5 + 3√2).

what is  equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

7- 3√2-x=12

Now solving

7- 3√2-x=12

Subtract 7 from both side

7- 3√2-x - 7 =12 - 7

- 3√2-x = 5

Now, add 3√2 both side

-3√2 -x + 3√2 = 5 + 3√2

-x= 5 + 3√2

x= -(5 + 3√2)

Hence, the value x is -(5 + 3√2).

Learn more about equation here:

https://brainly.com/question/10413253

#SPJ2

-2(x + 3) = -2(x + 1) - 4​

Answers

i’m working on something like that now

Answer:

infinite solution

Step-by-step explanation:

-2 times x is -2x

-2 times 3 is -6

-2 times x is -2x

-2 times 1 is -2

the equation now looks like this:

-2x-6=-2x-2-4

Simplify

-2x-6=-2x-6

0=0

So this is an infinite solution

Hope this helps!

what are the x and y intercepts of the equation -2x +3y=10

Answers

Answer:

Step-by-step explanation:

To find the x-intercept, let y = 0 and solve the resulting equation for x:

-2x + 3(0) = 10, or -2x = 10.  This results in x = -5; the x-intercept is (-5, 0).

To find the y-intercept, let x = 0 and solve for y:  -2(0) + 3y = 10, or y = 10/3.

The y-intercept is (0, 10/3).

Does anyone know what type of car this is?

Answers

Answer:

I think it is a Toyota I don't remember the model name.

Step-by-step explanation:

Toyota !!! it’s a toyota

May I please receive help?


Goyxrds?

Answers

Answer:

X = 22°

Step-by-step explanation:

A water storage tank is 4 m long, 3 m wide and 2 m deep. How many litres of water will it hold?​

Answers

Answer:

24 liters

Step-by-step explanation:

2×3×4

write (n+4)(n+3)(n+2) as a permutation

Answers

Answer:

1267 456 578 123 679 333 5

Step-by-step explanation:

yo

Please help! I’ll give brianliest to the correct answer!

Answers

Answer:

y = 1.5x + 9  

(y = height; x = number of cups)

Step-by-step explanation:

let x = number of cups

let y = height of the stack

the first cup will add 9 to the height (7.5 + 1.5)

so 9 is the y-intercept

for each additional cup, 1.5 will be added

so y = 1.5x + 9

The digit 6 in which number represents a value of 6?
Choose 1 answer:
1)906
2)644
3)565

Answers

Answer:

1) 906

Step-by-step explanation:

It's in the ones value making it represent the value of 6

The answer is the first choice: 906

Explanation:

The six in that number is in the ones place without any placeholder behind it, the only other numbers are informs of the number 6.

Therefore the digit six in 906 has the value that represents its actual value: 6

find the distance between the 2 numbers on a number line. 6 and -4 1/4

Answers

Answer:

10 1/4

Step-by-step explanation:

[tex]6 - ( - 4 \frac{1}{4} )[/tex]

two negatives make a positive

[tex]6 + 4 \frac{1}{4} = 10 \frac{1}{4} [/tex]

BRAINLIST!!! SHOW WORK!!!!!

Lines AB and CD are perpendicular to each other. If 3 measures (5x + 2)°, and 4 measures 13°, what is the value of x?
A.
x = 15
B.
x = 77
C.
x = 2
D.
x = 21

Answers

Answer:

A is the correct option.

Step-by-step explanation:

Since both lines are perpendicular to each other, that means the sum of their angles is equal to 90°.

Then,

(5x + 2) ° + 13° = 90°

5x + 15° = 90°

5x = 75°

x = 15°

Jerrold ran a race that was 3 5/8 miles long. What is 3 5/8 written as a decimal?

Answers

Answer:

3.625

step by step explanation :

I  just simply searched it up

10L is repacked into 6DL bottles. how many bottles are filled ??

Answers

Answer:

16

Step-by-step explanation:

1L=10DL

10L=100DL

100DL÷6DL=16.67

jack want to buy a coat that cost 74.95 the sales tax rate in his city 61/2% what is the total costfor the coat

Answers

Answer:

$79.7468

Step-by-step explanation:

2x/2 = 90/2 pls solve it it

Answers

Answer:

x=45

Step-by-step explanation:

2(45)=90

90/2=90/2

PLZ HELP!!
Tim explained a function in words and Paul wrote an equation.

Tim

The amount of money in a savings account increases at a rate of $225 per month. After eight months, the bank account has $4,580 in it.

Paul

y−1,400=56(x+26)

Whose function has the smaller y-intercept?

Tim’s with a y-intercept of $2,700
Paul’s with a y-intercept of $2,856
Paul’s with a y-intercept of $2,800
Tim’s with a y-intercept of $2,780

Answers

Answer:

Tim's with a y-intercept of $2,780

Step-by-step explanation:

To find Paul's y-intercept, solve the equation y-1400=56(x+26) for y. Then use the standard format for a linear equation y=mx+b to determine the y-intercept which would be b.

Step 1. Get y by itself by adding 1,400 to both sides.

y-1400 + 1400 = y

56(x+26) + 1400 = 56(x+26) + 1400

New equation y = 56(x+26) + 1400

Step 2. Distribute 56(x+26)

56(x+26) = 56 * x + 56 * 26 = 56x + 1456

New equation y = 56x + 1456 + 1400

Step 3. Simplify.

y = 56x + 2856

Paul's y-intercept would be 2856 because when y=0 x=2856

To Find Tim's y-intercept, subtract 225 * 8 from 4580.

225 * 8 = 1800

4580 - 1800 = 2780

Answer:D or answer 4 or 2,780 dollars.

Step-by-step explanation:

test

Which of the following lists of side lengths represents a right triangle?

A. 7, 24, 25

B. 3, 6, 9

C. 5, 12, 14

D. 15, 16, 17

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The side lengths of Triangle representing a right angled Triangle is :

[tex]7,24,25[/tex]

because , Pythagoras theorem is true for given Side lengths,

that is :

[tex] {7}^{2} + 24 {}^{2} = 25 {}^{2} [/tex]

Answer:

7,24,25

Step-by-step explanation:

Use Pythagorean theorem

[tex]\\ \sf\longmapsto H^2=P^2+B^2[/tex]

[tex]\\ \sf\longmapsto 25^2=24^2+7^2[/tex]

[tex]\\ \sf\longmapsto 625=576+49[/tex]

[tex]\\ \sf\longmapsto 625=625[/tex]

[tex]\\ \sf\longmapsto verified[/tex]

Given ∠A and ∠B are vertical angles with m∠A=50x+10 and m∠B=70x−10 .

What is x?

Enter your answer in the box.

Answers

Vertical angles are equal to each other, so:

50x + 10 = 70x - 10

20 = 20x

x= 1

Is it
A) <1 and <3
B) <2 and <6
C) <1 and <2
D) <2 and <8

Answers

Answer:

B) Angles <2 and <6

Step-by-step explanation:

They are corresponding angles

Write an equation for the line parallel to the given line that contains C.
C(-1,5); y = 8/9x+2
*

Answers

Answer:

y = 8/9x + 53/9

Step-by-step explanation:

5 = 8/9(-1) + b

45/9 = -8/9 + b

b = 53/9

A doctor has 12000 paitents .
4560 of these paintents are male .
What percentages of these paintents are female ?

Answers

Answer:

38

Step-by-step explanation:

Equation for percentage change is

Difference/total x 100

so 4560/12000x100=38%

Answer: i’m sure it’s 62%

Step-by-step explanation:

find the positive difference between 16 and -2​

Answers

Answer:

14

Step-by-step explanation:

16-2= 14

Hope this helps!

Factoring with Diagrams
A(x) = x3 – 7x² – 16x +112, You know that
(x-7) is a factor.
x-
х
+3
-7
-72
Check your work
Write A(x) as the product of linear factors.

Answers

Answer:

(x - 7)(x - 4)(x + 4).            

Step-by-step explanation:

A(x) = x3 – 7x² – 16x +112

Dividing by x-7:

      x^2  - 16               <-------- Quotient

     -----------------------------

x-7)x^3 - 7x^2 - 16x + 112

     x^3 - 7x^2

                    0 - 16x + 112

                        - 16x + 112

                          ..............

so A(x) = (x - 7)(x^2 - 16)       x^2 - 16 is the difference of 2 squares so we have:

(x - 7)(x - 4)(x + 4).

Checking by expanding the brackets:  

(x - 7)(x - 4)(x + 4)

= x(x - 4)(x + 4) - 7(x - 4)(x + 4)

= x(x^2 - 16) - 7(x^2 - 16)

= x^3 - 16x - 7x^2 + 114

= x^3 - 7x^2 - 16x + 112          

Help me please ?!?!?!?!?!

Answers

Answer:

option 3 left bottom corner

Step-by-step explanation:

Other Questions
We talked a lot about how life arises from non-living molecules through certain emergentproperties. What is one theory that scientists have put forth to explain how the first non-livingmolecules may have started to resemble life as we know it (multiplying, carrying outbiochemistry), and what evidence supports their claim? The periodic table of elements is composed of many What should the certified volunteer preparer do before starting the tax return?A. Make sure all questions on Form 13614-C are answered.B. Change "Unsure" answers to "Yes" of "no" based on a conversation with the taxpayer.C. Complete all applicable Certified Volunteer preparer shaded area question on Form 14614-CD. All the Above Need to finish this in 5 mins at which point does the line y=2-x intersect the circle (x-3)^2+y^2=25 Within months of becoming chancellor, Hitler banned which of the following? Select all that apply.Select one or more:a.trade unionsb.Jews from working in the civil service (for the government)c.all political parties except Nazisd.all privately-owned businesses Jacqui decides to open her own business and earns $90,000 in accounting profit the first year. When deciding to open her own business, she withdrew $20,000 from her savings, which earned 3 percent interest. She also turned down three separate job offers with annual salaries of $30,000, $40,000, and $45,000. What is Jacqui's economic profit from running her own business 7The Hunger Games is an example of a story that falls where on the historical timeline?O A.It is set in the past.B.It is set in the present.O C.It falls outside the historical timeline.O D.It is set in various realities.ResetNext I cant seem to find the right answer for this one, can anyone help me evaluate this problem please What caused the mountains of the west region of the United States to form the bill of rights was essential for protecting rights because the original constitution lacked any protected rights. Please help Given: P(1, 3)P(1,3)andQ(3,7)Q(3,7)What is the slope of PQPQJ which activity results from the action of hydrochloric acid on protein in the stomach? If the length of a sea turtle is directly proportional to its age, and a 2-year old sea turtle is 3 inches long, how many feet long is a 80-year old sea turtle? Which of the following are characteristics of a gas? (Select all that apply.)It has a fixed shape.It moves slowly.It has a fixed volume.It can be compressed. Here are the two other questions. I posted the first and the story on my last post before this one. Find the circumference and area of a circle with diameter 22 ft. What role does concentration gradient play in movement across a cell membranein active transport? Es el arte hermano de la tecnologa what is a major inhibitor to taking the first step?Fear Over-analyzingProcrastinationAll of the above