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

Someone please help me will mark brainliest !

Answers

Answer:

0 10

1 20

Step-by-step explanation:

0,0

1,20

2,40

3,50

4 60

Solve for x.

x / 4 ≥ - 8

Answers

Answer:

[tex]x \geqslant ( - 32) \: \: \: \: or \: \: \: \: ( - 32) \leqslant x[/tex]

Step-by-step explanation:

[tex] \frac{x}{4} \geqslant - 8 \\ x \geqslant - 8 \times 4 \\ x \geqslant (- 32) \\ [/tex]

Find the measure of the angle indicated in bold.
7)
17x + 11
18x + 4
A) 104°
C) 120°
B) 110°
D) 130°

Answers

Answer:

Im assuming you solve 17x plus 11 then add 18x +4.

Step-by-step explanation:

find the missing angle B

Answers

a) 50+b=180 (supplementary angles)

b=180-50

b=130

b) b= 43° { vertically opposite angle}

please help please help!!!!! ​

Answers

Answer:

mahirap yan pero calculator gamit should na yata yan

Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator 12kg:16kg

Answers

Answer:

3/4

Step-by-step explanation:

12kg/16kg= 6/8= 3/4

Hope this helps!

Pls mark brainliest if correct:)

Is the list of numbers a arithmetic sequence?
26,31,36,41,46,…

Answers

Answer:

g

have a great day ahead

please mark me as the brainliest

Answer:

[tex]31 - 26 = 36 - 31 = 41 - 36 \\ = 46 - 41 = 5 = d \\ yes \: it \: is \: an \: arithmetic \: sequence[/tex]

help with this question please

Answers

Answer:

-32

Step-by-step explanation:

if we multiply - 2 and -6 it becomes positive so it will be 12.

-2 multiply 22 will be -44

12 - 44 is -32.

answer : -32

you distribute so you do -2 times -6 which is 12. then -2 times 22 which is -44.

you end up with 12 - 44, which equals -32.

A rectangular field is five times as long as wide. If the perimeter of the field is 780 feet, what are the dimensions of the field?

Answers

Answer:

65 and 325

Step-by-step explanation:

(l+w)*2 = 780

l+w = 390

l = 5w

5w + w = 390

6w = 390

w = 65

length = 325

Asking again since I still don’t understand

Skylar collects coins and stamps. She wants to organize her collections to display them together. She has 56 coins and 72 stamps,
and she wants the same number of each item in each display.

What is the greatest number of displays Skylar can make?

Enter your answer in the box.

Answers

Answer:

She can only display each item 56 times

Step-by-step explanation:

Since she has 72 stamps and 56 coins to have a even amount of both she can only make 56 displays

Answer: 8

Step-by-step explanation: Solve this problem with GCF (Greatest Common Factor).

Factors of 56: 1, 2, 4, 7, 8, 14, 28 and 56.

Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36 and 72.

So, the biggest among the numbers that are matching is 8.

I need a equation written for this pleeeeeaaaassse! The constant of proportionality is 2.
but I need an equation for this, I have an attachment for you to help.

Answers

Answer:

Step-by-step explanation:

g=c

Answer:

The number of cupcakes are twice the number of guests.

g * 2 = c

I hope this helps you

Solve for all values of x by factoring. x^2-25= x 2 â’25= 0

Answers

Answer:

x = ± 5

Step-by-step explanation:

x² - 25 = 0 ( add 25 to both sides )

x² = 25 ( take square root of both sides )

x = ± [tex]\sqrt{25}[/tex] = ± 5

That is x = - 5, x = 5

Instead of having a cake, Paul wants to make ice cream sundaes at his next birthday party. He thinks each person will eat 2 cups of ice cream, and there will be 24 people at his party. How many 1-gallon tubs of ice cream should he buy?

Answers

Answer:

8

Step-by-step explanation:

24÷2=16×1=16÷2=8

am not sure I think the answer is also 16 so look at other people answer

Paul should buy 3 gallons

How to calculate unit price of something?

Unit means 'single entity', the fundamental constructing block. Usually, it is 1 in mathematics and science.

Thus, unit price of something is price of 1 thing.

Thus, suppose we're taking about price of mangoes, then unit price will denote the price of 1 mango.

There are 16 cups in a gallon, and if each person will eat 2 cups, and there are 24 people, multiply 24 by 2 to get the number of cups.

24 x 2 = 48.

Then, divide that by 16 (the number of cups in a gallon) to how many gallons.

48 ÷ 16 = 3

Therefore, he needs 3 gallons.

Learn more about unit price here:

https://brainly.com/question/945712

#SPJ2

The $5$th power of what number is equal to $3^{15}$?

Answers

Answer:

what

the numbers are all messed up

What is the midpoint of the line segment?
Drag the coordinates to the boxes to correctly match the endpoints and midpoint

Answers

Using the midpoint concept, it is found that:

The midpoint of the line segment of endpoints [tex](2, \sqrt{3})[/tex] and [tex](-6, 5\sqrt{3})[/tex] is [tex](-2, 3\sqrt{3})[/tex].The midpoint of the line segment of endpoints [tex]\left(-\frac{5}{3}, \frac{2}{5}\right)[/tex] and [tex]\left(\frac{1}{3}, \frac{3}{2}\right)[/tex] is: [tex]\left(-\frac{2}{3}, \frac{19}{20}\right)[/tex]

The midpoint of a line segment is given by the mean of the coordinates of it's endpoints.

For the first segment, which endpoints [tex](2, \sqrt{3})[/tex] and [tex](-6, 5\sqrt{3})[/tex]:

[tex]x_M = \frac{2 - 6}{2} = -2[/tex]

[tex]y_M = \frac{\sqrt{3} + 5\sqrt{3}}{2} = 3\sqrt{2}[/tex]

The midpoint is [tex](-2, 3\sqrt{2})[/tex]

For the second segment, which endpoints [tex]\left(-\frac{5}{3}, \frac{2}{5}\right)[/tex] and [tex]\left(\frac{1}{3}, \frac{3}{2}\right)[/tex]:

[tex]x_M = \frac{-\frac{5}{3} + \frac{1}{3}}{2} = -\frac{4}{6} = -\frac{2}{3}[/tex]

[tex]y_M = \frac{\frac{2}{5} + \frac{3}{2}}{2} = \frac{\frac{4 + 15}{10}}{2} = \frac{19}{20}[/tex]

The midpoint is [tex]\left(-\frac{2}{3}, \frac{19}{20}\right)[/tex]

A similar problem is given at https://brainly.com/question/24352869

Math?? anybody somebody please help




100 points worth

Answers

Answer:

c

Step-by-step explanation:

2^4=16

(16-8)/16=8/16=1/2

2^4-8/16 = 1/2 so c

3.3911649916 rounded to the nearest hundredth

Answers

The answer is 3.39

the hundredths place is 2 numbers after the decimal point
The answer is 3.39 because 1 doesn’t round up 9.

find the distance between AB A( 0 , 10 ) , B( 1 , 3 )

Answers

Answer
7 units
Hope this helps.

Answer:

7.07

Step-by-step explanation:

d = √(x2 - x1)² + (y2 - y1)²

= √(1 - 0)² + (3 - 10)²

= √1)² + (-7)²

√(1) + (49)

√50

= 7.07

Please help me asap with explanation please ​

Answers

Answer:

[tex] \sqrt{5 \times 5 \times 2 \times {x}^{2} \times {y}^{2} \times y} = \\ 5xy \sqrt{2 \times y} [/tex]

8th grade algebra pleas help

Answers

5/4 your welcome with your algebra

How many points of intersection are there between the graphs of the hyperbola and ellipse?
3x2 – 4y2 + 4x – 8y +4= 0
3x2 + y2 + 4x – 3y +4= 0
A.0
B. 1
C. 3
D.4

Answers

The point of intersection is the point where two or more functions meet.

The graphs of the hyperbola and ellipse have 0 point of intersection

The given parameters are:

[tex]\mathbf{3x^2 - 4y^2 + 4x - 8y + 4 = 0}[/tex]

[tex]\mathbf{3x^2 + y^2 + 4x - 3y + 4 = 0}[/tex]

To determine the points of intersection, we simply equate both equations.

So, we have:

[tex]\mathbf{3x^2 + y^2 + 4x - 3y + 4 = 3x^2 - 4y^2 + 4x - 8y + 4 }[/tex]

Cancel out the common terms

[tex]\mathbf{y^2 - 3y = - 4y^2 - 8y }[/tex]

Collect like terms

[tex]\mathbf{y^2 +4y^2= 3y - 8y }[/tex]

[tex]\mathbf{5y^2= - 5y }[/tex]

Divide through by 5

[tex]\mathbf{y^2= - y}[/tex]

Divide through by y

[tex]\mathbf{y= -1}[/tex]

The system of equation does not give room to calculate the x-coordinate at the x-axis.

Hence, the graphs of the hyperbola and ellipse have 0 point of intersection

Read more about points of intersection at:

https://brainly.com/question/13373561

Answer: 0

Explanation: Took the test

hELP! NO LINKSSS U ROBOTS!!!

Answers

Answer:

The answer is angle 4.

Step-by-step explanation:

Complimentary angles add up to 90°. So when it says what is the complimentary angle to angle 5, they want to know which angle will add up to 90° along with angle 5. We know that angles 1 and 3 are congruent and that angle 2 and angles 4+5 are congruent. Therefore angles 4 and 5 must add up to 90°.

Answer: Angle 4 is the correct option

Please help me! Please!

Answers

They are all positive

I think the correlation is negative because the graph is going down.

Hope this helps

Which of the following is the correct product for the equation?

27
.
3
×
100




A.
2.73

B.
273

C.
2,730

D.
27,300

Answers

Answer:

C. 2,730

Step-by-step explanation:

Answer:

thanks for telling me the answer god bless you

Step-by-step explanation:

work out 7 2/3 + 2 1/5

Answers

hope this helps, have a great day!!

mark brainliest :)

Answer:

9 and 13/15 or 148/15

Step-by-step explanation:

Hope this helps!

help me again plz thank you i make sure who answer this i will give five stars and a thx botton

Answers

Answer:

15,296

Step-by-step explanation:

Hope this helps!

solve an equation to find the value of x.

Answers

Answer:

79°=(7+8x)°[by vertically opposite angle]

79-7=8x

72=8x

72/8=x

9=x

Answer:

the answer is x=9

Step-by-step explanation:

Simplify the expression: (13 - 18) + 24 = 6
A. -71
B. - 8-
2.
3
C. 4
5
6
D, 12.
3.
Type here to search
0

Answers

The answer is A. -7 1/3

Can someone explain step by step ?

Answers

Answer:

e = 128

Step-by-step explanation:

All of the angles equal 180

26 + 26 = 52

180 - 52 = 128

Write the mixed number as an improper fraction.

one and seven-eighths

A. fourteen-eighths

B. fifteen-eighths

C. Start fraction seven over fifteen end fraction

D. start fraction 8 over 15 end fraction

Answers

B. 15/8

when you have a mixed number , you can multiply the denominator by the whole number, then add the numerator. 8 x 1 = 8, + 7 = 15. the denominator stays the same, so the answer is 15/8. hope this helped!!
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