The mean age of 4 women in an office is 28 years old. the mean age of 4 men in an office is 30 years old. what is the mean age(nearest year) of all the people in the office?​

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Answer 1
i needed point sorry

Related Questions

tony and luke share some money in the ratio 3:7. luke recives £20 more than tony , how much do they receive.

Answers

Answer:

$ 30. okkkkkkkpkkpkkkpkdodjei

Which equation has a vertex at (0, 5) and focus of (three-halves, 5)?

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The  equation has a vertex at (0, 5) and focus of (three-halves, 5) is,

- 6 x + y²- 10 y + 25 = 0

−6x+y² −10y+25=0

What is a parabola?

In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped. It fits several superficially different mathematical descriptions, which can all be proved to define exactly the same curves. One description of a parabola involves a point and a line.

Given

The equation of a parabola is x = [tex]\frac{1}{4 \left(f - h\right)} \left(y - k\right)^{2} + h[/tex], where (h,k) is the vertex and (f,k) is the focus.

Thus, h = 0 k = 5, f = 3/2

The standard form is x = [tex]\frac{y^{2}}{6} - \frac{5 y}{3} + \frac{25}{6}x[/tex]

The general form is - 6 x + y² - 10 y + 25 = 0

The vertex form is x = [tex]\frac{\left(y - 5\right)^{2}}{6}[/tex]

The directrix is x = d

To find d, use the fact that the distance from the focus to the vertex is the same as the distance from the vertex to the directrix: [tex]0 - \frac{3}{2} = d - 0[/tex]

Thus, the directrix is x = - 3/2

The axis of symmetry is the line perpendicular to the directrix that passes through the vertex and the focus: y = 5

The focal length is the distance between the focus and the vertex: 3/2

The length of the latus rectum is four times the distance between the vertex and the focus: 6.

The eccentricity of a parabola is always 1.

To know more about parabola refer to :

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Trina is creating a small concrete sidewalk to from her driveway to her front door as seen below. Trina needs to figure out how much to budget for the
How much should Trina budget for concrete?
Use algebraic expressions to describe your steps to find the answer.

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Answer

87

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The dimensions of a right rectangular prism are 0.25 m, 0.36 m, and 0.14 m. What is the volume of the prism use the V = 1 x w x h

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I only need point :(

In the top view of the square gem below, TW is the
midsegment of trapezoid SUVX.
Given that UV=10 and SX=6, find TW.
If necessary, round to one decimal place.
V
S
R

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7/v s r so I believe

Ms. Neeson wants to share $1 equally among 7 students. What fraction of a dollar will each student get?

Answers

Answer:

1/7

Step-by-step explanation:

$1, 7 students

simply put 1 over 7 and you've got your fraction.

each student will get 1/7 of a dollar

27 is what percent of 18.75 it is asking for a percent answer I’ve tried 44%, 144, 506.25

Answers

Answer:

144%

Step-by-step explanation:

Answer:

144%??

Step-by-step explanation:

thats the answer man

Working together, two ants named Aran and Beatrice can build an ant hill in 10 hours. Aran and Charlie can build the ant hill in 12 hours. Beatrice and Charlie can build the ant hill in 15 hours. How long, in hours, will it take to build the ant hill if Aran, Beatrice, and Charlie work together?

Answers

Here we have a problem of rates of work, we want to know how long will take the 3 ants to build an ant hill if they work together.

We will find that working together, they need to work for 8 hours.

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

Let's start by defining the variables that we will use:

A = rate at which Aran worksB = rate at which Beatrice works.C = rate at which Charlie works.

Now let's see the given information:

"Aran and Beatrice can build an ant hill in 10 hours"

This can be written as:

(A + B)*10 h = 1 ant hill

"Aran and Charlie can build the ant hill in 12 hours"

This can be written as:

(A + C)*12 h = 1 ant hill

"Beatrice and Charlie can build the ant hill in 15 hours"

This can be written as:

(B + C)*15 h = 1 ant hill.

Then we have 3 equations:

[tex](A + B)*10 h = 1[/tex]

[tex](A + C)*12 h = 1[/tex]

[tex](B + C)*15 h = 1[/tex]

Where for commodity, I removed the "ant hill" unit.

Now we need to solve this system of equations, to do it, we need to isolate one variable in one of the equations and then replace it on another equation.

I will isolate A in the first equation:

[tex]A = \frac{1}{10h} - B[/tex]

Now we can replace it in the second equation to get:

[tex](\frac{1}{10h} - B + C)*12h = 1[/tex]

Now we can isolate C in the last equation to get:

[tex]C = \frac{1}{15h} - B[/tex]

Replacing that in the above equation we get:

[tex](\frac{1}{10h} - B + \frac{1}{15h} - B)*12h = 1\\\\\frac{1}{6h} - \frac{1}{12h}= 2*B\\\\\frac{1}{2}*\frac{1}{12h} = \frac{1}{24h} = B[/tex]

This means that Beatrice alone would construct the hill in 24 hours.

Now that we know the value of B, we can use:

[tex]C = \frac{1}{15h} - B = \frac{1}{15h} - \frac{1}{24h} = \frac{1}{40h}[/tex]

This means that Charlie needs 40 hours to finish the hill alone.

Finally, we can use [tex]A = \frac{1}{10h} - B[/tex] to find the value of A:

[tex]A = \frac{1}{10h} - B = \frac{1}{10h} - \frac{1}{24h} = \frac{7}{120h}[/tex]

Now if the 3 ants work together, the total rate at which they work is:

[tex](A + B + C) = (\frac{7}{120h} + \frac{1}{40h} + \frac{1}{24h} ) = 0.125 h^{-1}[/tex]

This means that they need to work for the inverse of that rate

[tex]\frac{1}{0.125h^{-1}} = 8h[/tex]

Working together, they need to work for 8 hours to complete an ant hill

If you want to learn more, you can read:

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Which terms in the expression 9d2+15d3+11c2+7 have 14c2 as a like term?

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That would be the term 11c2 because like 14c2, 11c2 has a constant, a variable and raised to the power of 2.


Make D the subject of s=d/t


Answers

Answer:

speed = distance/time

Step-by-step explanation:

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The solution to the system of equations is (-7, 11). true or false

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What’s the equation?

Amanda is decorating you new house. She found a table at Pottery Barn for $425. If the table is 45% off, what will it cost?

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the table would be $233.75

Find the missing side using special right triangles

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Answer:

a=4[tex]\sqrt{3}[/tex], b=2[tex]\sqrt{3}[/tex]

Step-by-step explanation:

tan30=b/6, tan30=1/[tex]\sqrt{3}[/tex]  

solve for b, b=6*tan30=2[tex]\sqrt{3}[/tex]

sin30=b/a, sin30=1/2

solve for a, a=4[tex]\sqrt{3}[/tex]

Assume that no variable equals 0

1. c^12•c^-4•c^6
2. b^8/b^2
3. (a^4)^5
4. x^-2y/x^4y^-1
5. (a^2b/a^-3b^2)^-1
6. (x^2y/xy^3)^2
7. 1/2(-5a^2b^3)^2(abc)^2
8. m^7•m^8
9. 8m^3n^2/4mn^3
10. 2^3c^4t^2/2^2c^4t^2

help me please !

Answers

Step-by-step explanation:

When you multiply exponents of the same base (variable), add the exponents.

1. The exponents are 12 - 4 + 6 = 14 or c^14

When you divide exponents of the same base, subtract them.

2. 8 - 2 = 6 or c^6

When you raise a power to a power, you multiply the exponents.

3. 4 * 5 = 20 or c^20

When a number is raised to a negative exponent it can be re written like this x^-n = 1/x^n.

4. x^-2 * y / x^4 * y^-1; using the above information, rewrite everything to have positive exponents. If the negative exponent is in the denominator, then it becomes x^n/1

y * y / x^2 * x^4 ; then just add your exponents to simplify

y^2 / x^6

As we said before, a power raised to a power is exponent x exponent.

5. (a^2 * b) ^-1 / (a^-3 * b^2)^-1 ; as before a power raised to a power, multiply the powers.

a^-2 * b-1 / a^3 * b^-2 rewrite this as before, inverting negative exponents. a^3 / a^2 * b^1 * b^2 = a^3 / a^2 * b^3

Simolifynthe new expression to reduce the a variable by subtracting the bottom a^2 from the top a^3 and are left with

a / b^3

Work number 6 like 5, no negative exponents, so there won't be any inversions. Just multiply the outside power times every exponent, then do the division by subtracting exponents of like bases.

When figuring out the problems with constants, treat them like the variables. In number 7 the 5a^2 when raised to the 2nd power would be 5^2*(a^2)^2 = 25 a^4

Im sorry, out of time.

Bill baked 16 cookies with 2 scoops of flour. With 4 scoops of flour, how many cookies can Bill bake? Assume the relationship is directly proportional.

Answers

Answer:

Let c = the number of cookies

cookies/scoops of flour: 12/2 = c/3

Cross multiply.

2c = 36

c = 18 cookies

Step-by-step explanation:

Answer:

32 cookies.

Step-by-step explanation:

Find how much cookies Bill can bake with just 1 scoop of flour:

2 scoops of flour = 16 cookies

1 scoop of flour = 16 ÷ 2 = 8 cookies

Now, find 4 scoops of flour.

4 scoops of flour = 8 x 4 = 32 cookies

1:Kevin Williams earns a weekly wage of $870. During the most recent week, he worked 47 hours. Gross Pay = $ 2:Charles Joyner earns a biweekly wage of $2,400. During the most recent week, he worked 42 hours. Gross Pay = $ 3:Julio Valdez earns an annual salary of $63,000. During the most recent week, he worked 42 hours. Gross Pay = $ 4:Bridget Stein earns a monthly salary of $7,300. During the most recent week, she worked 58 hours. Gross Pay = $ 5:Betsy Cranston earns a semimonthly salary of $2,100. During the most recent week, she worked 50 hours. Gross Pay = $

Answers

Answer:

Step-by-step explanation:

I need this ASAP!!!!!!

Answers

Answer:

(x, y) = (1, -9)

Step-by-step explanation:

y = -9x

-8x-6y = 46

By substituting the value of y (first equation) into the second equation, we get,

-8x - 6*(-9x) = 46

-8x + 54x = 46

46x = 46

x = 1.

So, y = -9

If 7 + 3x = 22, then 2x = ?
O 5
O 10
O 12
0 14
og
3

Answers

Answer:

10

Step-by-step explanation:

Answer:

2x=10

Step-by-step explanation:


The measure of an exterior angle of a triangle is 40°. What is the sum of the measures of the corresponding remote interior angles?

Answers

Answer:

Remember that the two non-adjacent interior angles, which are opposite the exterior angle are sometimes referred to as remote interior angles. An exterior angle of a triangle is equal to the sum of the two opposite interior angles. The sum of exterior angle and interior angle is equal to 180 degrees

Jennifer buys a 2-liter bottle of apple juice and a 3-liter bottle of orange juice at the market. How many deciliters of juice does jennifer buy in call

Answers

Answer:

50 deciliters

Step-by-step explanation:

Given that,

Jennifer buys a 2-liter bottle of apple juice and a 3-liter bottle of orange juice at the market.

Total = 2 L bottle of apple juice + 3 L bottle of orange juice

= 5 L

We need to find how many deciliters of juice does Jennifer buy in all.

Since, 1 L = 10 Deciliter

5 L = 50 Deciliter

So, she will buy 50 deciliters of juice.

0.00002004 and 0.01203000 in scientific notation

Answers

Answer:

Below...

Step-by-step explanation:

Scientific Notation:

2.004 × 10-5

Scientific Notation:

1.203 × 10-2

1) 2/7×1/2
2) 5/8×4/5
3) 1/6×2/3
4) 1/3×3/4
5) 1/2×2/3
6) 1/3×2/5​

Answers

1) 1/7
2) 1/2
3) 1/9
4) 1/4
5) 1/3
6) 2/15
hope this helped:)

What is the number of cycles of y=1+10sin(θ−2π/3) between 0 and 2π?

Answers

Answer:

D. 2/3

Step-by-step explanation:

What is the image of the point (8,-6)(8,−6) after a rotation of 180 counterclockwise about the origin?

Answers

Answer:

(-8, 6)(-8, 6)

Step-by-step explanation:

The formula for 180 degree rotation is (-x, -y)

John and Robin like to collect stones. John has n stones, and Robin has 68 stones. Together they have a total of 98 stones, Write an equation to describe this situation. ​

Answers

Answer:

n+68=98 find n (n=30)

Step-by-step explanation:

Three-quarters of a number is 15.
Work out four-fifths of the number.

Answers

Answer:

16

Step-by-step explanation:

let the number be x , then

[tex]\frac{3}{4}[/tex] x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

[tex]\frac{4}{5}[/tex] × 20 = 4 × 4 = 16

Answer:

16

Step-by-step explanation:

let the number be x , then

\frac{3}{4} x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

\frac{4}{5} × 20 = 4 × 4 = 16

This is find the slope but I don’t get it. Whoever answers these two will be marked brainliest please help me I need these done and it’s currently 3 AM

Answers

Answer:

m=-2/5

Step-by-step explanation:

Slope is rise over run. In this graph the slope is negative because rise (change in the Y value) is decreasing.

Will mark brainliest! A retailer marks up the price of a coffee mug from $6.25 to $8.77. By what percent did the price increase? Round to
two decimal places
a 28.73%
b 39.68%
c 40.32%
d 45.97%

Answers

Answer:

The answer is C, 40.32

Step-by-step explanation:

If you put 6.25 in your calculator times 40.32% you get 2.52. Then you add the 2.52 to 6.25 to get 8.77.

The answer is definitely c

In a game, Erin is rolling a fair number cube with faces numbered 1 to 6. Which BEST describes the probability of rolling an even number?
A. impossible
B. equal to the probability of rolling an odd number
C. less likely than the probability of rolling an odd number
D. more likely than the probability of rolling and odd number

Answers

B because there is 3 odd numbers and 3 even number 1,3,5 are odd and 2,4,6 or even

Quick whoever gives the right answer gets brainliest

Answers

Answer:

The independent variable (IV) is the amount of hamburgers

Step-by-step explanation:

The amount of hamburgers influence the sale amount.

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Importance of weather and climate on our daily life The class needs to collect 20.5 pounds of cans for recycling over the next 5 months. Students plan to collect 3.75 pounds each month. (1) Hiring Jane for a position in your restaurant is a wise decision thatwill prove beneficial to all. (2) With her superior organizational skills,ability to relate to others, and general sense of responsibility, she'll betotally great. (3) As her previous employer, I have often seen her takepersonal responsibility for solving problems - even those caused byothers. (4) Furthermore, customers frequently praised her for making agreat effort to ensure that they had a positive experience. (5) HiringJane will prove to be a decision nobody will regret.Which option best revises this paragraph to maintain a formal tonethroughout?A. Replace sentence 3 with: As her previous employer, Jane wasoften seen taking personal responsibility for problems, includingthose that were caused by others.B. Replace sentence 4 with: Furthermore, patrons of theestablishment lauded Jane habitually for making a prodigiousattempt to ensure that they had positive experience.C. Replace sentence 1 with: Hiring Jane for a position in yourrestaurant is an awesome decision for you.D. Replace sentence 2 with: With her superior organizational skills,ability to relate to others, and general sense of responsibility, Jane is an ideal candidate for this position 4/9 + 2/9 simplified Jenny is doing a survey on why children like chocolates. Which survey question would she use? Help Help Help FastGive and example of functional differences between cells belonging to two different parts of the human body??? Plzz helpp Ill mark brainiest Find the coordinates of the point on the directed segment from (1,2) to (6,12) that divides it into a ratio of 2:3 Please help! This is Algebra 1, and im like so confused... The Populists and the Progressive movements were similar in their approaches to reform in that both Group of answer choices promoted the use of violent strikes and protests against big business organizations opposed the strict laissez-faire attitudes of the federal government supported the return of powers to the state governments lobbied for immediate social and economic equality for African Americans Will enjoys a breakfast of ham and eggs while he waits for the soldiers to leave the tavern. yes or no Return to questionItem 4 Required information Skip to question Retained earnings at the beginning of the period was $300. During the period, Kilgore Company earned revenue of $1,100 and incurred expenses of $400. Assuming dividends paid to stockholders were $200, the ending balance in retained earnings must have been: Question 10 of 20Which item fits appropriately in the blank?CheckBranch ofGovernmentBranch ofGovernmentJudicial?ExecutiveO A. Appoints judgesOB. Declares laws unconstitutionalC. Confirms judgesOD. Overrides vetoesSUBMITPREVIOUS What is the volume of the tissue box 5in 7in 2in 3. Which key has 5 flats? A family cell phone plan costs $40 per month for each line and $50 for unlimited data. they pay $170 Create an equation i dont understand graphs at all Cleaning agents and food products should be stored separately.TRUEFALSE What does reliably" mean in these sentences?Please Help!!!! ( 4a - 5 ) + ( 3a + 6 )