Answer:
11.66
Step-by-step explanation:
5th grade math. correct answer will be marked brainliest
The answer is b
saddsadsadas
Answer:
B
Step-by-step explanation:
Cause he added 24.76 more pounds to the 3.6 pounds. So you can take 24+3=27 and you might think C, but 0.76+0.6 that equals more than 1, so 27+1=28, and B has 28 as its answer, so its B
B
36 x 2 = 9 x blank x
Answer:
x = 8
Step-by-step explanation:
36 × 2 = 9 × x
72 = 9x
9x = 72
9x ÷ 9 = 72 ÷ 9
x = 8
A community had a population of 12,000 in 1985, which is increased to 20,000 in 2010. The saturation population is 80,000. Estimate the 2020 population by (a) arithmetic growth, (b) constant percent increase, and (c) decreasing rate of increase.
Answer:
The right answer is :
(a) 23,200
(b) 24,514
(c) 22,926
Step-by-step explanation:
According to the question,
[tex]P_1 = 12000[/tex]
[tex]P_2 = 20000[/tex]
[tex]P_{sat}=80000[/tex]
(a)
We know that the arithmetic growth formula will be:
⇒ [tex]P=Pi+K\times t[/tex]...(1)
here,
⇒ [tex]K=\frac{P_2-P_1}{\Delta t}[/tex]
[tex]=\frac{20000-12000}{25}[/tex]
[tex]=\frac{80000}{25}[/tex]
[tex]=320[/tex]
On putting the values in equation (1), we get
⇒ [tex]P_{2020}=20000+320\times 10[/tex]
[tex]=23,200[/tex]
(b)
The geometric growth formula will be:
⇒ [tex]P=ln(Pi)+K\times t[/tex]
here,
⇒ [tex]K=\frac{lnP_2-lnP_1}{\Delta t}[/tex]
[tex]=\frac{ln(20000)-ln(12000)}{25}[/tex]
By putting the values of general log, we get
hence,
⇒ [tex]P_f=ln(20000)+0.0204\times 10[/tex]
[tex]=10.107[/tex]
[tex]P_{2020}=e^{10.107}[/tex]
[tex]=24,514[/tex]
(c)
⇒ [tex]P_f=P_{sat}-(P_{sat}-P_i)e^{-K\times t}[/tex]
or,
⇒ [tex]K=-\frac{1}{\Delta t}ln(\frac{P_{sat}-P_2}{P_{sat}-P_1} )[/tex]
from here, we get
[tex]=0.005[/tex]
hence,
⇒ [tex]P_{2020}=80000-(80000-20000)e^{-0.005\times 10}[/tex]
[tex]=80000-(60000)e^{-0.005\times 10}[/tex]
[tex]=22,926[/tex]
figure is shown.
What is the measure, in degrees, of
Based on the stated expectations of the sit-and-reach test, which of the following is TRUE?
A.
Men are generally more flexible than women.
B.
Women are generally more flexible than men.
C.
Men and women are about equally flexible.
D.
No broad conclusions can be drawn about flexibility.
Answer:
B
Step-by-step explanation:
please help, no links
Answer:
150
Step-by-step explanation:
Remark
The exterior angle = the sum of the two given interior angles. The first job is to solve for x and then use that to find the exterior angle.
Equation
83 + 6x + 7 = 15x
Solution
Combine like terms
90 + 6x = 15x Subtract 6x from both sides.
6x 6x
90 = 9x Divide both sides by 9
90/9 = 9x/9
x = 10
Now the exterior angle = 15x
Exterior angle = 15*10
Exterior angle = 150
which equation is not a linear function:
y=2x
y=x+2
y=x-2
y=x²
Answer:
Step-by-step explanation:
A linear equation can be written in the form
y = mx+b.
y = x² is not linear.
I will go potty now thx
3) 40% of the class of 30 students are boys.
How many are girls?
Answer:
there 18 girls
Step-by-step explanation:
40% of 30 = 12
this means there are 12 boys
30-12 = 18
there 18 girls
Divide. Give the quotient and remainder.
33 - 8
:))))
Please answer the question below
Answer:
Kilo —> 1×10³ grams
nano —> 0.000000001 meters
micro —> mean " one millionth"
centi —> 0.01 liters
(NO FILES OR LINKS OR RANDOM WORDS)
Answer:
Randomly selecting a six of diamonds - 1 / 52
Randomly selecting a 7, 8, 9 or 10 - 4 / 13
Step-by-step explanation:
There is only 1 six of diamonds in a standard deck of cards. There are 52 cards in a deck, thus the probability of pulling a six of diamonds is 1 in 52.
There are 4 of each card in a deck. so they are 4 7's, 4 8's. 4 9's and 4 10's. And there are a total of 52 cards in a deck. So the probability of pulling a 7,8,9 or 10 are 4 + 4 + 4 + 4 in 52
4 + 4 + 4 + 4 = 16
16 / 52 simplified is 4 / 13 Therefore the is a 4 in 13 chance of pulling a 7 8 9 or 10
The other ones are correct
find 3 rational numbers between 1/3 and 1/2
FIRST TO ANSWER GETS BRAINLYEST WHATEVER ITS CALLED, PLEASE I NEED THIS DONE TODAY. JUST LOOK AT THE PICTURE
Answer:
28.83
Step-by-step explanation:
1. The ages of customers at a store are normally distributed with a mean of 45 years and a standard deviation of 13.8 years.
(a) What is the z-score for a customer that just turned 25 years old? Round to the nearest hundredth.
(b) Give an example of a customer age with a corresponding z-score greater than 2. Justify your answer.
Part (a)
The raw score is x = 25. The mean and standard deviation are mu = 45 and sigma = 13.8 respectively.
The z score is computed with the formula below
z = (x-mu)/sigma
z = (25-45)/13.8
z = -1.449275 approximately
z = -1.45 is the final answer
========================================================
Part (b)
We want the z score to be larger than 2. So z > 2.
This is the same as wanting the expression (x-mu)/sigma to be larger than 2
(x-mu)/sigma > 2
(x-45)/13.8 > 2
x-45 > 2*13.8
x-45 > 27.6
x > 27.6+45
x > 72.6
If a customer's age is greater than 72.6 years, then this means they have a z score greater than 2. We can say they are more than 2 standard deviations above the mean.
If you need a whole number, then I'd round up to 73. Or you could pick any age larger than this.
Hurry. !!! The formula A = 6s' gives the surface
area A of a cube with a side length s.
What is the surface area of a cube that
has a side length of 5 inches?
A. 25 square inches
B. 125 square inches
C. 150 square inches
D. 300 square inches
Kevin and Randy Muise have a jar containing 95 coins, all of which are either quarters or nickels. The total value in the jar is $13.95. How many of each type of coin do they have?
14.80 is the answer
1 1
13.95
95
80
1 4
2. Use the image to answer the questions.
(a) What is the center and the radius of the circle?
(b) What are the equations of the circle in graphing form and in general form? Show your work.
Answer:
Center = (-1, 1)
Radius = 3
Graphing form
(x + 1)² + (y - 1)² = 3²
General form
x² + y² + 2x - 2y - 7 = 0
Step-by-step explanation:
Center = (-1, 1)
Radius = 3
Graphing form
(x + 1)² + (y - 1)² = 3²
General form \Expand graphing form\
(x² + 2x + 1) + (y² - 2y + 1) - 9 = 0
Rearrange
x² + y² + 2x - 2y - 7 = 0
Jovi distributed 3(n+2) and got 3 x n + 3 x 6 is his answer correct
Answer:
Step-by-step explanation:
since 3 is outside the parenthesis (n + 2) you multiply the 3 by the n and the 2 and
3n + 6
next subtract the 6 and add the 6 to the other side
3n - 6 = 6
3n = 6
n = 2
How do the angles and side lengths of the preimage relate to the corresponding angles and side lengths of the image of a dilation with a scale factor not equal to 1?
Answer:
The angles are proportional and the side lengths are proportional.
Step-by-step explanation:
Savaas Realize
Select all the equations where x = 5 is a solution.
A. X - 4 = 9
B. 1 + x = 6
C. 2 = 7 - x
D. 10x = 5
F. x2 = 5
Answer:
b and c
Step-by-step explanation:
x=5 so its basically 1+5=6 and 7-5=2
HELP WITH THIS ASAP!
Answer:
Hi, there your answer will C. 85pi ft^2
Step-by-step explanation:
pi(5)(12)+pi(5)^2
60pi+25pi
85pi ft^2
Hope this helps :)
A radioactive substance with initial value of 800g decays according to the exponential model A= 800e^(kt). After 10 years, only 400g of the substance remains. Find the value of k. Round your answer to the nearest thousandth. NO LINKS!!!!
Answer:
k ≈ - 0.069
Step-by-step explanation:
Given
A = 800 [tex]e^{kt}[/tex]
Substitute A = 400 and t = 10 into the equation
400 = 800 [tex]e^{10k}[/tex] ( divide both sides by 800 )
0.5 = [tex]e^{10k}[/tex] ( take the ln of both sides )
ln [tex]e^{10k}[/tex] = ln0.5
10k lne = ln0.5 [ lne = 1 ]
10k = ln 0.5 ( divide both sides by 10 )
k = [tex]\frac{ln0.5}{10}[/tex] ≈ 0.069 ( to the nearest thousandth )
Answer:
Step-by-step explanation:
400 = 800 * e^(k*t)
What are the units of t? I'm taking it as years.
Divide by 800
400/800 = e^(k*10)
1/2 = e^(k*10)
ln(1/2) = ln(e)^(k*10)
ln(1/2) = k*10 * ln(e)
ln(e) = 1
-0.69314 = k*10
-0.069314 = k
Check
A = 800 e^(-0.069314*10)
A = 800 e^(-0.69314)
A = 800 * 0.50000359
A = 400.0028722
Which is close enough to 400
Evaluate each series.
Help pls 50 points
Answer:
1. 2,555
2. 23.25
Step-by-step explanation:
1. 5+10+20+...
S9 = 5(2^9-1)/(2-1)
= 5(511) = 2,555
2. 12+6+3+1.5+0.75 = 23.25
This side was due yesterday help immediately show all work
Answer:
1.
ST=23
RU=8
SV=5
SU=5+5=10
2.
24x-19=16x+13
24x-16x=13+19
8x=32
x=32/8
x=4
3.
8x-37=5x+17
8x-5x=37+17
3x=54
x=54/3
x=18
4.
4x+19=6x-7
19+7=6x-4x
2x=26
x=26/2
x=13
MN=4×13+19=71
5.
9x-15=7x-1
9x-7x=15-1
2x=14
x=14/2
x=7
CD=7×7-1=48
6.
3x+4=5x-16
16+4=5x-3x
2x=20
x=20/2
x=10
now
JL=3×10+4+5*10-16=68
7.4x+4=7x-17
17+4=7x-4x
3x=21
x=21/3
x=7
again
5y-31=2y+5
5y-2y=31+5
3y=36
y=36/3
y=12
now.
PQ:5×12-31=29
QR:2×12+5=24+5=29
PS:4*7+4=32
SR:7*7-17=32
PT:6*7-2*12=18
Please answer
I will mark as the brainliest the one whose going to answer right
A. Right triangles.
B. Height of 16cm with bases 20cm
C. 320
D.?
Find indicated side of right triangle 45 percent 7
Answer:
a = 7
b = 7[tex]\sqrt{2}[/tex]
Step-by-step explanation:
in a 45-45-90° triangle, the length of legs to hypotenuse is 1 : [tex]\sqrt{2}[/tex]
Qu
Peter hired a cleaning company to clean his house. The cleaning company charges a
fixed fee of $15 plus $17 per hour to clean a house.
a. Write an equation that can be used to determine, c, the total amount in dollars that
the cleaning company charges to clean a house in h hours.
To find the total cost you need to multiply the hourly rate by the number of hours they work and add the fixed fee.
C = 17h + 15
In the diagram below, xy and z are tangent to 0. What is the measure of XZ?
Answer:
A. 130°
Step-by-step explanation:
Answer:130
Step-by-step explanation:
I just finished the quiz :)
A bank is offering 3.5% simple interest on a savings account. If you earned $525 in interest
in 2 years, how much did you deposit in the savings?
O $7,500
O $8,000
O $7.250
$7.000
Answer:
$7500
Step-by-step explanation:
Given
[tex]I = 525[/tex]
[tex]R = 3.5\%[/tex]
[tex]T =2[/tex]
Required
The Principal
This is calculated using:
[tex]I =PRT[/tex]
Make P the subject
[tex]P = \frac{I}{RT}[/tex]
So, we have:
[tex]P = \frac{525}{3.5\% * 2}[/tex]
[tex]P = \frac{525}{7.0\%}[/tex]
[tex]P = 7500[/tex]