Predict the number of students out of 400 that would pick science(3) as their favorite subject
Math=6
Science=3
English=4
History=7

Answers

Answer 1
We want to find the ratio of students who picked science vs the rest. We would add everything up, totaling to 20. 3 students picked science, so the ratio would be 3/20. We then multiply 400 by 3/20, which is 60.  

Related Questions

Find the volume of the composite solid. Round your answer to the nearest hundredth.

A.239.24cm^3
B.246.08cm^3
C.294.03cm^3
D.308.78cm^3

Answers

So the composite solid has a rectangular pyramid top with a rectangular box below.
We can find the total vol. by adding the two together: Vol (v)total = vol (pyra) + vol (box)
vol (tot) = (1/3×base×height) + (l×w×h)
In order to find the height (h) of the triangle, we imagine a string dropped straight down from the apex (tip), which falls perfectly to center of the base of pyramid. Now the distance from the bottom of that string to edge is 1/2×6.7 = 3.35. Use Pythagorean Theorem to determine the pyramid height:
[tex] {5.8}^{2} = {h}^{2} + {3.35}^{2} \\ {h}^{2} = {5.8}^{2} - {3.35}^{2} \\ h \: = \sqrt{({5.8}^{2} - {3.35}^{2})} \\ h = \sqrt{(33.64 - 11.22)} \\ h = \sqrt{22.42} = 4.73 \: cm[/tex]
Now we can solve our volume, so the base of pyra = l×w = 6.2×6.7 = 41.54
vol (tot) = (1/3×base×height) + (l×w×h)
vol = (1/3×41.54×4.73) + (6.7×6.2×5.5)
vol = (65.49) + (228.47) = 293.96
[tex]vol = 294 \: {cm}^{3} > > \: answer \: (c)[/tex]

Six students measure the acceleration (in meters per second per second) of an object in free fall. The measured values are: 10.56, 9.52, 9.73, 9.80, 9.78, 10.91.The students want to state that the absolute deviation of each measured value xfrom the mean is at most
d. Find the value of
d.

Answers

The measured data is
x = [10.56, 9.52, 9.73, 9.80, 9.78, 10.91]

There are 6 measurements.
Calculate the mean.
m = (10.56+9.52+9.73+9.80+9.78+10.91)/6 = 10.05

Calculate deviations from the mean.
y = |x - m|
   = [0.51, 0.53, 0.32, 0.25, 0.27, 0.86]

The greatest deviation from the mean is d = 0.86.

Calculate the average absolute deviation.
(0.51+0.53+0.32+0.25+0.27+0.86)/6 = 0.4567

Answer:
d = 0.86

Deidre is 5 feet 4 inches tall and her weight is 135 pounds. her bmi is closest to _____ kg/m2.

Answers

Deidre bmi is 23.73.

1. Multiply the weight by .45:

135 X .45 = 60.75kg

2. Multiply the height in INCHES by .025

Convert 5feet 4inches to only inches (5*12+4) = 64 inches

Now multiply 64 X .025 = 1.6 m

3. Square the answer from the above step.
 
1.6 X 1.6 = 2.56m

4. Divide the answer from the first step by the answer from the third step.
60.75kg/2.56m = 23.73.


Deidre bmi is 23.73.

Find the domain of the following piecewise function.

[-4,3)
(-4,3]
[-4,6)
(-4,6]

Answers

The answer is [-4,6)
Graph both the you can easily find the answer

Answer:

c

Step-by-step explanation:

a pyramid with a square base of length 3cm and height 16cm

Answers

h = 16 cm
s = 16.0702 cm
a = 3 cm
e = 16.14 cm
r = 1.5 cm
V = 48 cm3
L = 96.421 cm2
B = 9 cm2
A = 105.421 cm2

The volume of a square pyramid:V = (1/3)a2hSlant Height of a square pyramid:By the Pythagorean theorem, we know thats2 = r2 + h2since r = a/2s2 = (1/4)a2 + h2, ands = √(h2 + (1/4)a2)This is also the height of a triangle sideLateral Surface Area of a square pyramid (4 isosceles triangles):For the isosceles triangle Area = (1/2)Base x Height. Our base is side length a, and for this calculation our height for the triangle is slant height s.  With four
 sides we need to multiply by 4.L = 4 x (1/2)as = 2as = 2a√(h2 + (1/4)a2)Squaring the 2 to get it back inside the radical,L = a√(a2 + 4h2)Base Surface Area of a square pyramid (square):B = a2Total Surface Area of a square pyramid:A = L + B = a2 + a√(a2 + 4h2))A = a(a + √(a2 + 4h2))

Bill Payne visits his local bank to see how long it will take for $1,000 to amount to $1,900 at a simple interest rate of 12 ½%. Provide Bill with the solution to his problem in years. A. 6.5 years B. 7.2 years C. 12.5 years D. 10.2 years

Answers

Your monthly deposit of $0.00  for 6 years with an interest rate of 12.05% compounded Annually
with an initial starting balance of $1,000.00Balance after 6 years with annual interest of 12.05% $1,979.12
7 years- 2,217.60$
12 years- 3,916.90

PLEASE HELP

Solve for x.

−32>−5+9x



Enter your answer, as an inequality, in the box.

Answers

-32 > - 5 + 9x

-32 + 5 < 9x

-27 <  9x

-3 < x

x > -3

hope that helps, God bless!

Inequality is a statement of an ordered relationship

The value of x as inequality is less than -3.

x < -3 is our answer.

What is inequality?

It is a statement of an ordered relationship

- greater than,

- greater than or equal to,

- less than,

- less than or equal to between two numbers or algebraic expressions.

Example:

x > 3

y < 5

x ≤ 6

y ≥ 2

We have,

-32 > -5 + 9x

Add 5 on both sides.

-32 + 5 > -5 + 9x + 5

[ -32 + 5 = -27 ]

-27 > 9x

Divide both sides by 9.

-27/9 > 9x/9

-9 x 3 / 9 > 9x / 9

-3 > x

This can be written as:

x < -3

Thus,

The value of x as inequality is less than -3.

i.e x < -3

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What is the surface area of a cylinder whose radius is 3 inches and whose height is 10 inches? Round to the nearest tenth.

SA = 2π r2 + 2π rh
A. 226.1 square inches
B. 241.8 square inches
C. 244.9 square inches
D. 543.3 square inches

Answers

The answer is C. 244.9

How is an emulsion different from a solution?
:The components are mixed unevenly instead of evenly within the emulsion.
:Insoluble instead of soluble particles are suspended within the emulsion.
:Two liquids that normally are not mixable are mixed in the emulsion.
:The components of an emulsion are single elements or compounds instead of a mixture of compounds.

Answers

Emulsion is a liquid suspended in a liquid while solution is liquid and solid

A scatterplot is produced to compare the size of a lake to the number of fish that are in it. There are 15 data points, each representing a different lake. The points are widely dispersed on the scatterplot with no pattern of grouping. Interpret what the results of the scatterplot tell you about the relationship between the two variables.

Answers

There is no relation between the size of a lake and the number of fish in the lake.

Answer:

Since there is no cluster formed in the scatterplot, the two variables are not related. Therefore, based on the data shown in the scatterplot, the number of fish in a lake is not dependent on the size of the lake.

Step-by-step explanation:

8 less than one third of x is y

Answers

y = 1/3x -8
I think this is what you were looking for seeing that you cannot solve this problem without an 'x' or 'y'.

Which statement is true about the equations –3x + 4y = 12 and x – y = 1?

The system of the equations has exactly one solution at (–8, 3).
The system of the equations has exactly one solution at (–4, 3).
The system of the equations has no solution; the two lines are parallel.
The system of the equations has an infinite number of solutions represented by either equation.

Answers

The system of the equations has no solution; the two lines are parallel.

Answer:

C

Step-by-step explanation:

Its C just did the test

The domain for f(x) and g(x) is the set of all real numbers. Let f(x) = 2x2 + x − 3 and g(x) = x − 1. Find f(x) • g(x).

A. 2x3 − x2 + 4x − 3

B. x2 − 4x + 3

C. 2x3 − x2 − 4x + 3

D. 2x3 − 4x2 + 3

Answers

f(x)*g(x)=(2x^2+x-3)(x-1)=(2X^3+x^2-3x)-(2x^2+x-3)=2x^3-x^2-4x-3
so the answer should be C

Find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer below.


A.682

B.2044

C.2048

D.678

Answers

The answer is 4+8+16+32+64+128+256+512+1024: This is equivalent to 2044

Answer:  The correct option is (B) 2044.

Step-by-step explanation:  We are given to find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024.

We know that

the n-th term of a geometric sequence with first term a and common ratio r is given by

[tex]a_n=ar^{n-1}.[/tex]

According to the given information, we have

[tex]a=4[/tex]

and

[tex]ar^{9-1}=1024\\\\\Rightarrow 4\times r^8=1024\\\\\Rightarrow r^8=\dfrac{1024}{4}\\\\\Rightarrow r^8=256\\\\\Rightarrow r^8=2^8\\\\\Rightarrow r=2.[/tex]

Therefore, the sum of the 9-term geometric sequence is given by

[tex]S_9\\\\\\=\dfrac{a(r^9-1)}{r-1}\\\\\\=\dfrac{4\times(2^9-1)}{2-1}\\\\\\=\dfrac{4\times(512-1)}{1}\\\\=4\times511\\\\=2044.[/tex]

Thus, the required sum of the 9-term sequence is 2044.

Option (B) is CORRECT.

Write the next two terms in the pattern. 3, 10, 17, 24, . . .

Answers

the pattern is +7.
So next values would be 31 and 38

10-3 =7

 each term increases by 7

 so 24 +7 = 31

31+7 = 38

 next 2 terms are 31 & 38

Jenny earned a 77 on her most recent test. Jenny’s score is no less than 5 points greater than 4/5 of Terrance’s score. If t represents Terrance’s score, which inequality represents the situation?

Answers

Answer:    

The situation is represented by the following inequality :

[tex]\bf 77\geq \frac{4}{5}\cdot t+ 5[/tex]

Step-by-step explanation:

Score earned by Jenny on her most recent test = 77

Let the Terrance's score is represented by t

[tex]\frac{4}{5}\text{ of the Terrance's score is = }\frac{4}{5}\cdot t[/tex]

If Terrance's score is 5 points greater then the points earned by Terrance's in the test is represented by :

[tex]\bf\frac{4}{5}\cdot t+ 5.......(1)[/tex]

Now, according to the given condition in the question , Jenny's score is not less than the score represented by (1)

⇒ Jenny's score is greater than equal to the score represented by (1)

Hence, The situation is represented by the following inequality :

[tex]\bf 77\geq \frac{4}{5}\cdot t+ 5[/tex]

Answer:

B

Step-by-step explanation:

based on the pattern of the drawings which conjecture is reasonable to make?



A. when a pair of parallel lines is intersected by a third line, the corresponding angles are complementary
B. when a pair of parallel lines is intersected by a third line, all of the angles formed are congruent.
C. when a pair of parallel lines is intersected by a third line, the corresponding angles are congruent
D. when a pair of parallel lines is intersected by a third line, the corresponding angles are supplementary.

Answers

the 2 angles in each picture are the same - meaning they are congruent,

 so the answer is:

C. when a pair of parallel lines is intersected by a third line, the corresponding angles are congruent

Conjectures are simply opinions from a given information.

The conjecture that can be formed is: C. when a pair of parallel lines is intersected by a third line, the corresponding angles are congruent

From the three diagrams, we can see that:

[tex]\mathbf{30^o = 30^o}[/tex][tex]\mathbf{35^o = 35^o}[/tex][tex]\mathbf{50^o = 50^o}[/tex]

From the figures above, we have the following observations

The angles are congruentThe angles are correspondingThe congruence of the angles is based on parallel lines, intersected by a third line (i.e. the transversal)

Hence, the conjecture that can be formed is: option (c)

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What is the average of 5.24,6.875,3.298,5.7,4.98? Round the answer to 2 decimal points

Answers

The original answer is 5.2186. After you round, your answer should become 5.22

Help me i hate word problems

Answers

Is that all? My Algebra is freackin hard compared to this. Anyways, The way I understand this, is that we will have 3 (liters of water) +0.5 (half a liter of lemonade) =3.5 liters of liquid

so the question would be: how many times does  fit into 3.5?

if you want to divide by a fraction, you need to multiply by the reverse of it. 

so the answer is: 10 servings of lemonade ( and a little bit will be left over for half a serving).
Hope this helps!

A rectangular picture frame measures 83 cm by 42 cm What is the perimeter or distance around the picture frame in meters

Answers

We know that the perimeter of any shape is found by adding up the distance all the way around the shape. For a rectangle (like a picture frame) this is equal to twice the width plus twice the length:
[tex]P=2w+2l[/tex]

We can find our answer by direct substitution of known values:
[tex]P=2(83cm)+2(42cm)[/tex]
[tex]P=166cm+84cm[/tex]
[tex]P=250cm[/tex]

We can then convert to meters:
[tex]250cm * \frac{1m}{100cm} = 0.25m[/tex]

The perimeter of the picture frame is 0.25m. 
The correct answer to your question is 2.5 meters

On average, how many times must a 6-sided die be rolled until a 6 turns up twice in a row?

Answers

Chance of one 6: 1/6
Chance of two 6s: (1/6)² = 1/36
Hello There!

The chance of rolling a 6 on 2 dice is 1/6 x 1/6.
1/6 x 1/6 = 1/36.
The average number of times for the first 6 would be 6
I'm not sure how to explain this part
But the average number of times for the second one would be 7.
To get the consecutive number of times, multiply them together:
6 x 7 = 42.
It would take an average of 42 times.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

The african bush elephant weighs between 4.4 tons and 7.7 tons. What are its least and greatest wieghts rounded to the nearest ton

Answers

4.4=4 tons rounded

7.7=8 tons rounded
4.4 rounds to 4.

7.7 rounds to i

2.What is the correct equation of the line shown below ?

Answers

The correct answer would be the first choice, y=3/2x+3.

Since the line enters the y-axis at (0,3) the y-intercept of the equation would be 3 (as according to the y=mx+b format where b is the y-intercept and m is the slope). The slope would be 3/2 since when you find two perfect points (I used (0,3) and (2,6)) and you use the rise over run method (move up 3 from (0,3) and 2 to the right to get to (2,6)), your slope is 3/2.

The equation of the line shown is y = (3/2)x + 3.

What is the equation of line?

The general equation of a straight line is

y = mx + c,

where m is the gradient or slope, and

y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.

Now given points from the line passes are  (0,3) and (-4,-3)

Therefore we have,

x₁ = 0

y₁ = 3

x₂ = -4

y₂ = -3

Now since the slope of the line is given as,

m = (y₂ - y₁)/(x₂ - x₁)

⇒ m = (-3 - 3)/ (-4-0)

⇒ m = -6/(-4)

⇒ m = 6/4

or, ⇒ m = 3/2

Now, for intercept c we can put any of points in the equation of line.

So, put (0,3)in the equation of line

3 = m(0) + c

3 = 0 + c

⇒ c = 3

Hence the required equation of line is given as,

y = mx + c

put the values of m and c,

y = (3/2)x + 3

which is the required equation of the line shown

Hence,the equation of the line shown is y = (3/2)x + 3.

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Ronald walks from home to Taco Bell to eat everyday. It takes him 30 minutes to walk the 2 mile distance. A) write a function for Ronald’s wall. Let x be the number of minutes he walks.
B) what should the domain of the function be?

Answers

a) We know that 

[tex]d=vt[/tex]

where d[tex]y= \frac{1}{15}x [/tex]= distance,
v = velocity,
t = time

In this case, d = 2 mi., t = 30 min. So we get

[tex]2=30v[/tex]

Dividing both sides by 30, we get

[tex]v= \frac{2}{30}= \frac{1}{15} [/tex]

Thus a function for his walk would be 

[tex]y= \frac{1}{15} x[/tex]
where y = distance and x = number of minutes he walks.

b) Domain of a function is a set of x-values on which the function defined. In this case, the number of minutes is 30 at maximum. So the domain of the function is [0, 30].

in 2003, a gallon of gas cost $1.75. In 2013 a gallon of gas cost $3.25. Write an equation to model this situation.

Answers

Final answer:

To model the situation of the gas prices in 2003 and 2013, we can use a linear equation. The equation to model this situation is y = $0.15x - $298.70.

Explanation:

To model the situation of the gas prices in 2003 and 2013, we can use the equation of a linear relationship between the year (x) and the cost of gas (y). We can use the formula y = mx + b, where m is the slope and b is the y-intercept.

First, let's find the slope (m):

The change in cost of gas is $3.25 - $1.75 = $1.50The change in years is 2013 - 2003 = 10

Therefore, the slope (m) is $1.50 / 10 = $0.15.

Next, let's find the y-intercept (b):

Using the point (2003, $1.75), we can substitute the values into the equation and solve for b:

$1.75 = $0.15(2003) + b

b = $1.75 - $0.15(2003)

b = $1.75 - $300.45

b = -$298.70

Therefore, the equation to model this situation is y = $0.15x - $298.70, where x is the year and y is the cost of gas.

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A new truck that sells for $25,000 depreciates (decreases in value) 11% each year. What will be the value of the truck in 2 years

Answers

Original price =$25,000
Depreciation rate = 11%

Note that 1 - 0.11 = 0.89.
Value after 1 year    = $25,000 (0.89) = $22,250
Value after 2 years = $22,250 (0.89) = $19,802.50

Answer: $19,802.50

Answer:

Price of Truck after 2 year = $ 19802.50

Step-by-step explanation:

Given: Price of truck = $ 25,000

           Price depreciate at rate of 11%  in a year

To find: Price of truck after 2 years

If we let Price of truck to be P = $ 25000

And Rate of deprecation to be R = 11%

And time to be n = 2

now by using formula of deprecation, we get

[tex]A=P\times(1-\frac{R}{100})^n[/tex]

[tex]A=25000\times(1-\frac{11}{100})^2[/tex]

[tex]A=25000\times0.7921[/tex]

A = $ 19802.50

Therefore, Price of Truck after 2 year = $ 19802.50

14-3x=4x solve and explain

Answers

14 - 3x = 4x
Flip
4x = 14 - 3x
Add both sides by 3x
7x = 14
Divide both sides by 7
x = 2
Have an awesome day! :)

The relative frequency of a car travelling through a road junction having exactly two occupants is 0.26.If 5,000 cars are observed passing through the junction, how many of the cars could be expected to have only two occupants?

Answers

5000 cars x 0.26 frequency of a car with 2 occupants = the number of cars that have 2 occupants at the junction

5000 x 0.26 = ??

Which transformation is not isometric?

Answers

the answer would be A since the squares are different sizes in each figure

Help with math please.
Select the correct rate of change and y -intercept for the linear function that contains the points (4, 6) and (5, 3).

Question 1 options:

The rate of change is –3, and the y -intercept is 18.


The rate of change is 3, and the y -intercept is –6.


The rate of change is 1/3, and the y intercept is 4 2/3


The rate of change is -1/3, and the y intercept is 7 1/3

Answers

Hello,

The rate of change is the slope (rise/run, y/x). To find that, we use the equation (y2-y1) over (x2-x1). It means take the second "y" and subtract it from the first "y" and the same to "x". If I plug in the numbers, it would be (3-6) over (5-4), and after you subtract, the answer simplifies to: -3/ 1 which is -3. Yay! We got the slope (rate of change) done.

Now let's find the y-intercept by using the formula of point-slope form, 
y-y1= m (slope) (x-x1). This is saying you "y" is subtracted from the first 
"y" of the points which equals the slope (m) times the quantity of "x" subtracted by the first "x" of the points. 

Let's plug the numbers in: y-6 = -3 (x-4). Let's distribute -3 to the parenthesis, and after that it should simplify to: y-6 = -3x + 12. To get "y" by itself, add 6 to both sides: y = -3x +18. We have finally found the slope-intercept equation for those two points (4,6) and (5,3). To then find the y-intercept in this equation, it would be the 18, because -3 is the slope, so that makes 18 the y-intercept.

In conclusion, the rate of change is -3 and the y-intercept is 18

I hope this helps!

May
..........................................
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