Answer:
The first one is 13/20 second one is 13/25 and the third is equally likely
Step-by-step explanation:
An exponential function in the form y = ab^x goes through the points (3, 10.125) and (6, 34.2). Find a to the
nearest integer and b to the nearest tenth, then find f (10) to the nearest integer.
Answer:
[tex]f(10) = 173[/tex]
Step-by-step explanation:
Given
Exponential Function
[tex](x_1,y_1) = (3,10.125)[/tex]
[tex](x_2,y_2) = (6,34.2)[/tex]
Required
Determine f(10)
We have that
[tex]y = ab^x[/tex]
First, we need to solve for the values of a and b
For [tex](x_1,y_1) = (3,10.125)[/tex]
[tex]10.125 = ab^3[/tex] --- (1)
For [tex](x_2,y_2) = (6,34.2)[/tex]
[tex]34.2 = ab^6[/tex] ---- (2)
Divide (2) by (1)
[tex]\frac{34.2}{10.125} = \frac{ab^6}{ab^3}[/tex]
[tex]\frac{34.2}{10.125} = \frac{b^6}{b^3}[/tex]
[tex]3.38= b^{6-3}[/tex]
[tex]3.38= b^{3}[/tex]
Take cube root of both sides
[tex]b = \sqrt[3]{3.38}[/tex]
[tex]b = 1.5[/tex]
Substitute 1.5 for b in [tex]10.125 = ab^3[/tex]
[tex]10.125 = a * 1.5^3[/tex]
[tex]10.125 = a * 3.375[/tex]
Solve for a
[tex]a = \frac{10.125}{3.375}[/tex]
[tex]a = 3[/tex]
To solve for f(10).
This implies that x = 10
So, we have:
[tex]y = ab^x[/tex] which becomes
[tex]y = 3 * 1.5^{10[/tex]
[tex]y = 3 * 57.6650390625[/tex]
[tex]y = 172.995117188[/tex]
[tex]y = 173[/tex] -- approximated
Hence:
[tex]f(10) = 173[/tex]
At a school 1/2 of the pupils walk to school.
2/5 of the pupils get the bus.
The remaining 68 pupils get a lift in a car.
Calculate the number of pupils who get the bus and who walk to school.
Answer:
i guess the answer is 680.
WILL MARK BRAINLIEST PLEASE ANSWER 12/15+5/15 1 NUMBER FOR EACH SLOT
Answer:
17/15
Step-by-step explanation:
or if u reduce it would be 12/15
- 11/5 -2.4 1.6 15/10 - 2.25 in order from least to greatest
Answer (least to greatest):
-2.4-2.25-11/515/101.6I hope this helps!
Answer:
1.6,- 11/5 ,2.25 , -2.4 15/10
Step-by-step explanation:
about 99.7 of sixth grade students will have heights between inches and inches
51.1 and 64.9
Step-by-step explanation:
Answer: 55.1 and 64.9
On edge.
Step-by-step explanation:
Can some one help me understand this?
Answer:
0 cavities
minimum is 0 cavities. there are people having 0 cavities. see the graph.
hope it helps!
Answer:
0
Step-by-step explanation:
The minimum is the smallest value in the dataset. The smallest number of cavities is 0.
please give thanks by clicking the heart button! :)
Identify the slope in this equation -y = -5x + 9
Answer:
-5
Step-by-step explanation:
The equation given is written in slope-intercept form (y = mx + b). In this form, 'm' represents the slope of a line and 'b' represents the y-intercept of the line. Since the equation asks for the slope, we can simply look at the value of 'm' in the equation. Then, we will find the slope.
slope - intercept form
y = mx + b
given equation
-y = -5x + 9
values
m = slope = -5
b = y-intercept = 9
Alison can swim 75 feert in 12 seconds. What is he rate to the nearest mile per hour?.
Answer:
in an hour she can swim around 22,500 feet which is about 4.26 miles
Step-by-step explanation:
Answer:
22,500 miles per hour
Step-by-step explanation:
60 seconds in a minute times 60 minutes in one hour. 3600
Divide that by 12 then multiply by 75 to get your answer
PLZ MARK BRAINLIEST
Distribute 2(-3x + 5)
Answer:
= −6x+10
Step-by-step explanation:
Answer:
-6x+10
Step-by-step explanation:
Multiply the 2 by each figure in the parenthesis. So, it becomes the sum of (2)-3x and 2(5), which is -6x+10.
Find the slope of the line that passes through the points given in the table.
х у
-3 | 0
2 | 2
7 | 4
12 | 6
Answer:
2/5
Step-by-step explanation:
(2,2) and (7,4) 4-2/7-2=2/5
What is the solution to this system of equations?
2x-5y=-3
y=16-4x
Answer:
2x-5y=-3
Slope= 2.000 /0.800
x-intercept=-3/2=-1.50000
y-intercept=3/5=0.60000
y=16-4x
Slope=-8.0000/2.0000=-4.000
x-intercept=16/4=4
y-intercept=6/1=16.00000
Step-by-step explanation:
A department store is having a holiday sale. Mr. Smith bought a couch
that had a regular price of $500. He received a $150 discount. What was
the percentage of the discount that Mr. Smith received?
Answer:
Step-by-step explanation:
500×30=15000
AC =
Round your answer to the nearest hundredth.
Answer:
70 I think but I'm not sure
Step-by-step explanation:
AC=70
Pls help with the math!! It would mean a lot if you could print it out and do it! Tyyyyyy WILL MARK BRAINLIST!
Answer:
Step-by-step explanation:
Answer:
mark the answer below as brainliest x
Step-by-step explanation:
1) There are about 20 million people in New York State, with a total land area of about 47,000 square miles.
What is the population density of New York State?
A. 0.0004 people per sq. mile
B. 426 people per sq. mile
C. 2,350 people per sq. mile
D. 940,000 people per sq. mile
Step-by-step explanation:
B. 426 people per square. mile
I need the answer quickly
what are coordinates of point j?
Answer:
(7,4)
Step-by-step explanation:
The x always goes first and the y goes second
Answer:
7,4
Step-by-step explanation:
x,y
Try this hard Math Problem if you dare!!
Answer:
a. [tex](x - 3)^2 + 16[/tex]
b. [tex]8(x -7)^2[/tex]
c. [tex](a^2 - 1)(7x - 6)[/tex] or [tex](a+1)(a-1)(7x-6)[/tex]
d. [tex](x^2-4)(x^2+3)[/tex] or [tex](x-2)(x+2)(x^2+3)[/tex]
e. [tex](a^n+b^n)(a^n-b^n)(a^{2n} +b^{2n})[/tex]
Step-by-step explanation:
[tex]a.\ (x + 1)^2 - 8(x - 1) + 16[/tex]
Expand
[tex](x + 1)(x + 1) - 8(x - 1) + 16[/tex]
Open brackets
[tex]x^2 + x + x + 1 - 8x + 8 + 16[/tex]
[tex]x^2 + 2x + 1 - 8x + 24[/tex]
Collect Like Terms
[tex]x^2 + 2x - 8x+ 1 + 24[/tex]
[tex]x^2 - 6x+ 25[/tex]
Express 25 as 9 + 16
[tex]x^2 - 6x+ 9 + 16[/tex]
Factorize:
[tex]x^2 - 3x - 3x + 9 + 16[/tex]
[tex]x(x -3)-3(x - 3) + 16[/tex]
[tex](x - 3)(x - 3) + 16[/tex]
[tex](x - 3)^2 + 16[/tex]
[tex]b.\ 8(x - 3)^2 - 64(x-3) + 128[/tex]
Expand
[tex]8(x - 3)(x - 3) - 64(x-3) + 128[/tex]
[tex]8(x^2 - 6x+ 9) - 64(x-3) + 128[/tex]
Open Brackets
[tex]8x^2 - 48x+ 72 - 64x+192 + 128[/tex]
Collect Like Terms
[tex]8x^2 - 48x - 64x+192 + 128+ 72[/tex]
[tex]8x^2 -112x+392[/tex]
Factorize
[tex]8(x^2 -14x+49)[/tex]
Expand the expression in bracket
[tex]8(x^2 -7x-7x+49)[/tex]
Factorize:
[tex]8(x(x -7)-7(x-7))[/tex]
[tex]8((x -7)(x-7))[/tex]
[tex]8(x -7)^2[/tex]
[tex]c.\ 7a^2x - 6a^2 - 7x + 6[/tex]
Factorize
[tex]a^2(7x - 6) -1( 7x - 6)[/tex]
[tex](a^2 - 1)(7x - 6)[/tex]
The answer can be in this form of further expanded as follows:
[tex](a^2 - 1^2)(7x - 6)[/tex]
Apply difference of two squares
[tex](a+1)(a-1)(7x-6)[/tex]
[tex]d.\ x^4 - x^2 - 12[/tex]
Express [tex]x^4[/tex] as [tex]x^2[/tex]
[tex](x^2)^2 - x^2 - 12[/tex]
Expand
[tex](x^2)^2 +3x^2- 4x^2 - 12[/tex]
[tex]x^2(x^2+3) -4(x^2+3)[/tex]
[tex](x^2-4)(x^2+3)[/tex]
The answer can be in this form of further expanded as follows:
[tex](x^2-2^2)(x^2+3)[/tex]
Apply difference of two squares
[tex](x-2)(x+2)(x^2+3)[/tex]
[tex]e.\ a^{4n} -b^{4n}[/tex]
Represent as squares
[tex](a^{2n})^2 -(b^{2n})^2[/tex]
Apply difference of two squares
[tex](a^{2n} -b^{2n})(a^{2n} +b^{2n})[/tex]
Represent as squares
[tex]((a^{n})^2 -(b^{n})^2)(a^{2n} +b^{2n})[/tex]
Apply difference of two squares
[tex](a^n+b^n)(a^n-b^n)(a^{2n} +b^{2n})[/tex]
1. Change the following into 12 hour clock time
a) 1720 hours. b)0235 hours
Answer:
A) 5:20 pm
B) 2:35 am
Step-by-step explanation:
The hours in am are from 00:00 - 12:00, the numbers after 12 for example 17, you subtract 12 and the remaining is the hours and what is left of the number for example 20 is the minutes.
I am horrible at explaining but I hope this helps... :)
Answer:
a) 5:20
b) 2:35
Step-by-step explanation:
a) Subtract 12 from the 17 at the beginning of 1720, leaving you with 5. This is the hour component of standard time, and will be placed on the left side of the colon (5:__). Then, put the last two digits onto the other side of the colon in standard time like so: 5:20.
b) For this one, because the first two digits don't exceed twelve, you simply have to divide the first two digits from the last two digits and put a colon between them: 02:35, or 2:35.
How many cubic inches are in one-sixth of one cubic yard?
Answer:
7776
Step-by-step explanation:
what’s the slope?
a line has the given equation 8x-6y=24
Answer:
-1.333333
Step-by-step explanation:
:)
have a very nice day
which point on the line number line represntes -1/3
Answer:
Point C
Happy Holidays!
Step-by-step explanation:
ay
Sam got a job mowing lawns earning $20 for every lawn he mows, m Represents this situation by filing in the table below, creating a graph, and writing an expression. Then determine how much Sam will earn for mowing 22 lawns, justifying/showing how much you got your answer
You would multiply each number by 20
Step-by-step explanation:
It says that right there
Which best describes a system of equations that has no solution?
-consistent, independent
-inconsistent, dependent
-consistent, dependent
-inconsistent
thank you for your help
Answer: inconsistent
Step-by-step explanation:
Mr.Williams' physical education class lasts 7/8 hours. How many minutes are not spent on instructions? playing game:1/2, instructions: 1/5, warm up and cool down:3/10
Answer:
I believe the answer is 42 minutes :)
Can someone answer please
Answer:
9
Step-by-step explanation:
thank me later :)
Mal runs around a track at a constant speed of 750 meters in 30 minutes how many meters per minute is that?
Answer:
25 meters per second
Step-by-step explanation:
Divide to find m/s.
750 / 30 = 25
Check in necessary.
25 * 30 = 750
Answer:
25 per sec
Step-by-step explanation:
What is the slope of the line that passes through the points A (–4, 3) and B (–2, –5)?
4x-3y=24 in slope-intercept form
Answer:
y=(4/3)x-8
Step-by-step explanation:
Slope-intercept form: y=mx+b
4x-3y=24
3y=4x-24 (isolating the 3y)
y=(4/3)x-8 (dividing both sides by 3)
Hope this helps!
Evaluate each expression for g = -7 and h = 3 and match it to its value.
1. gh
2. g2 - h
3. g + h2
4. g + h
5. h - g
6. g - h
Answer:
The values of given expressions are:
1. gh = -21
2. g^2 - h = 46
3. g + h^2 = 2
4. g + h = -4
5. h - g = 10
6. g - h = -10
Step-by-step explanation:
Given values of g and h are:
g = -7
h = 3
1. gh
The two numbers are being multiplied
Putting the values
[tex]gh = (-7)(3) = -21[/tex]
2. g^2-h
Putting the values
[tex]=(-7)^2-3\\=49-3\\=46[/tex]
3. g+h^2
Putting the values
[tex]= -7 + (3)^2\\=-7+9\\=2[/tex]
4. g+h
Putting the values
[tex]= -7+3\\=-4[/tex]
5. h-g
Putting the values
[tex]= 3 - (-7)\\=3+7\\=10[/tex]
6. g-h
Putting values
[tex]=-7-3\\=-10[/tex]
Hence,
The values of given expressions are:
1. gh = -21
2. g^2 - h = 46
3. g + h^2 = 2
4. g + h = -4
5. h - g = 10
6. g - h = -10
Answer:
1) - 21
2) 46
3) 2
4) -4
5) 10
6) -10
Step-by-step explanation:
g = -7h = 3[tex]1)gh = - 7(3) \\ \: \: \: \: \: \: = - 21[/tex]
[tex]2){g}^{2} - h = ( - 7 {)}^{2} - 3 \\ \: \: \: \: \: \: \: \: \: \: \: = 49 - 3 \\ \: \: \: = 46[/tex]
[tex]3)g + {h}^{2} = - 7 + {3}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 7 + 9 \\ \: \: \: \: = 2[/tex]
[tex]4)g + h = - 7 + 3 \\ \: \: \: \: \: \: \: = - 4[/tex]
[tex]5)h - g = 3 - ( - 7) \\ \: \: = 10[/tex]
[tex]6)g - h = - 7 - 3 \\ \: \: \: \: \: \: \: \: \: \: = - 10[/tex]