Answers
Answer:
Subtract 9m from both sides of the equation.
Step-by-step explanation:
Related Questions
maurice has 20 strips of leather that are each 4 1/2 feet long. maurice wants to punch holes in each strip of leather that are 3/8 of a foot apart. maurice will use the expression shown to determine the number of hles to punch in each strip of leather.
4 1/2 ÷3/8
which expression will also give the number of holes that maurice will punch into each strip of leather?
2/9 ÷8/3
2/9÷3\8
9/2 . 8/3
9/2 . 3/8
Answers
Answer:
A
Step-by-step explanation:
Answer:
9/2 . 8/3
Step-by-step explanation: Both equations equal 12
what is the solution of
Answers
Answer:A
Step-by-step explanation:
Answer: D (12)
Step-by-step explanation: I put both equations into desmos and the coordinates are (12,23) and x=12. It's not 6!
Which product is modeled by the number line below?
O (-3/4)
O (-24)
O (214)
O (3)(4)
Answers
Answer:
D
Step-by-step explanation:
there are 4 jumps. and 3 numbers between the jumps
Mark charges a one-time fee of $12 for travel and then $7.50 per hour for labor. How
many hours will he need to work to make $42?
A.3
B.4
C.5
D.6
Answers
Answer:
$42
Step-by-step explanation:
D
A lighthouse is located on an island 7 miles from the closest point on a straight shoreline. If the lighthouse light rotates clockwise at a constant rate of 8 revolutions per minute, how fast does the beam of light move across the shore when it is 3 miles from the point on the shore closest to the island
Answers
Answer:
[tex]\dfrac{800 \pi}{7} \ miles/min[/tex]
Step-by-step explanation:
From the given information:
We learned that the light rotates 8 revolutions per minute.
Therefore;
[tex]\dfrac{d \theta}{d t}= \dfrac{8 * 2 \pi}{1 \ min}[/tex]
[tex]\dfrac{d \theta}{d t}= 16\pi \ rads/min\\[/tex]
From the trigonometry formula, the tanget of the lighthouse in relation to the closest point on a straight shoreline can be expressed as:
[tex]tan \theta = \dfrac{x}{7}[/tex]
By differentiation with respect to t; we have:
[tex]\dfrac{d(tan \theta)}{dt} = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
[tex]\dfrac{d(tan \theta)}{d \theta}* \dfrac{d \theta}{dt} = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
By applying the chain rule:
[tex]sec^2 * \dfrac{d \theta }{d t} = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
[tex](1 + tan ^2 \theta) \dfrac{d \theta }{dt} = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
When x = 3 ; we have [tex]tan \theta = \dfrac{1}{7}[/tex]
[tex]\bigg (1 + \dfrac{1}{49} \bigg ) \dfrac{d \theta }{dt} = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
Also;
[tex]\dfrac{d \theta}{d t}= 16\pi \ rads/min\\[/tex]
[tex]\bigg (1 + \dfrac{1}{49} \bigg ) 16 \pi = \dfrac{1}{7} * \dfrac{dx}{dt}[/tex]
[tex]\bigg ( \dfrac{50}{7} \bigg ) 16 \pi = \dfrac{dx}{dt}[/tex]
[tex]\dfrac{dx}{dt} = \dfrac{800 \pi}{7} \ miles/min[/tex]
A middle school sold 673 student tickets and staff tickets for the end of year carnival.
The tickets for the carnival were $2.50 for students and $4.00 for staff. The school made
$1,924.00 from student and staff ticket sales. Which equation will help to determine the
number of student tickets (s) and the number of staff tickets (1) sold?
OA
45 + 2.5f = 673
OB. suf = 1,924
• C. 2.5s + 4f = 673 + 1,924
OD. 2.5s + 4f = 1,924
Answers
A Store makes a profit of 18 on a blanket after a markup of 30% what was the selling price
Answers
Answer:
78
Step-by-step explanation:
% profit= profit/CP ×100/1
Profit= selling price (S.P) - cost price(C.P)
%profit= 30
profit= 18
% profit= profit / CP×100/1
30= 18/CP ×100/1
30 = 1800 /CP
CP= 1800/30
CP =60
Recall that:
Profit= SP- CP
SP= Profit +CP
= 18+60
=78
need help on my homework please
Answers
Answer:
32
Step-by-step explanation:
[tex] \frac{8(8)}{2} = 32[/tex]
i think this is the answer
Answer:
32
Step-by-step explanation:
8 x 8 = 64
64/2 = 32
Hope this helps!
The distance between Dallas and Houston is 136 kilomenters. There are approximately 8 kilometers in 5
miles. What is the measurement that is closest to the number of miles between these two?
Answers
85 miles
136 kilometers is equal to 85 miles
Point P is in the interior of ∠NOQ. If m∠NOP = 37 and m∠NOQ = 123, what is m∠POQ?
Answers
Answer:
86
Step-by-step explanation:
angle NOP and angle POQ add up to create angle NOQ which equals 123 degrees. We just have to subtract 123-37 (NOP) to find the measure of angle POQ which equals 86 degrees
Answer:
The measure of angle ABD is 86 degrees.
Step-by-step explanation:
Need help with 24 I’ve been stuck on it for a minute now idk
Answers
Suppose that, on average, 1 person in 1000 makes a numerical error in preparing his or her income tax return. If 10,000 returns are selected at random and examined, find the probability that 6, 7, or 8 of them contain an error.
Answers
Answer:
0.2657
Step-by-step explanation:
Given that:
Probability of Error (p) = 1/ 1000 = 0.001
Number of trials (n) = 10000
μ = (n * p) = 10000 * 0.001 = 10
Using the binomial distribution :
P(x, μ) = e^-μ (μ^x) / x!
for x = 6
P(6, 10) = e^-10 (10^6) / 6!
P(6, 10) = 0.0000453999 (1388.8888) = 0.06305541263112
for x = 7
P(7, 10) = e^-10 (10^7) / 7!
P(7, 10) = 0.0000453999 (1984.1269) = 0.09007916284731
for x = 8
P(8, 10) = e^-10 (10^8) / 8!
P(8, 10) = 0.0000453999 (2480.1587) = 0.11259895696413
P(6) + P(7) + P(8)
0.06305541263112 + 0.09007916284731+ 0.11259895696413
= 0.26573353244256
= 0.2657
help pls i’ll give brainlest if it’s correct .
Answers
Answer:
Pb (Lead)
General Concepts:
The number of protons in the nucleus of an element determines where it is on the Periodic Table and what element it is.
Step-by-step explanation:
Given: 82 Protons
Looking at the Periodic Table, the element that has 82 protons is Lead (Pb).
The proportion of brown M&M’s in a milk chocolate packet is approximately 14% (Madison, 2013). Suppose a package of M&M’s typically contains 52 M&M’s. a.) State the random variable. b.) Find the mean. c.) Find the variance. d.) Find the standard deviation.
Answers
Answer: a) Let x be a random variable that represents the number of brown M&M’s in a milk chocolate packet.
b) Mean =7.28
c) Variance = 6.2608
d) Standard deviation = 2.5022
Step-by-step explanation:
Given : The proportion of brown M&M’s in a milk chocolate packet is approximately : p=14% =0.14
We have outcomes for every randomly selection : 1) its in a milk chocolate packet 2) its not.
a) Let x be a random variable that represents the number of brown M&M’s in a milk chocolate packet.
So x follows binomial distribution.
b) Sample size : n=52 (given)
Mean [tex]= np = (0.14)(52) =7.28[/tex]
c) Variance = [tex]n p (1-p)= 52 (0.14)(1-0.14) =7.28(0.86)=6.2608[/tex]
d) Standard deviation =[tex]\sqrt{Variance}=\sqrt{6.2608}\approx2.5022[/tex]
A normally distributed population has a mean of 500 and a standard deviation of 60. Determine the probability that a random sample of size 25 selected from the population will have a sample mean greater than or equal to 515.
Answers
Answer:
The value is [tex]P(\= X \ge 515 ) = 0.8944[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 500[/tex]
The standard deviation is [tex]\sigma = 60[/tex]
The sample size is n = 25
Generally the standard error of mean is mathematically represented as
[tex]\sigma _{\= x } = \frac{\sigma }{\sqrt{n} }[/tex]
=> [tex]\sigma _{\= x } = \frac{60}{\sqrt{25} }[/tex]
=> [tex]\sigma _{\= x } = 12[/tex]
Generally the probability that a random sample of size 25 selected from the population will have a sample mean greater than or equal to 515 is mathematically represented as
[tex]P(\= X \ge 515 ) = 1 - P(\= X < 515)[/tex]
Here [tex]P(\= X < 515) = P(\frac{\= x - \mu }{\sigma_{\= x }} < \frac{515 - 500}{12} )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
[tex]P(\= X < 515) = P(Z < 1.25 )[/tex]
From the z table the probability of (Z < 1.25 )
[tex]P(Z < 1.25 ) = 0.10565[/tex]
So
[tex]P(\= X < 515) = 0.10565[/tex]
So
[tex]P(\= X \ge 515 ) = 1 - 0.10565[/tex]
=> [tex]P(\= X \ge 515 ) = 0.8944[/tex]
Jamie saw an advertisement for a 6 ounce tube of toothpaste that cost $.90 how much should a 4 ounce tube cost?
Answers
Answer:
it will be $.60
Step-by-step explanation:
divide 90 by 6 and get 15. multiply 4 by 15 and get 60!
4 ounces would be 0.60 cents
What is an equation to 3,
509
Answers
Answer:
3000+509
Step-by-step explanation:
1754.5 times 2
3500 plus 9
Hope this helped ;)
What is the slope of the line given by the equation below?
y+ 2 = -3(x-5)
O A. 2
O B.-3
O c.3
O D.-5
Answers
Answer:
B. -3
Step-by-step explanation:
y + 2 = -3(x - 5)
y + 2 = -3x - 15
y = -3x - 15 - 2
y = -3x - 17
y = mx + b
m = -3
can i get brainliest please?
if a single pane of glass obliterates 3% of the light passing through it, then the percent p of light that passes through n successive panes is given approximately by function p(n)-100(0.97)^x. what percent of light will pass through 25 panes
Answers
Answer:
46.7
Step-by-step explanation:
3% of light is obliterated from this pane of glass
1-0.03
= 97% = 0.97
The function has been given as
P(n) = 100(0.97)^x
Let's take our x to be 25 just as the question says
P(n) = 100(0.97)²⁵
P(25) = 46.697
This is approximately equal to 46.7
Therefore the percentage of light that would pass through 25 panes is 46.7
can yall tell me my GPA pl i dont know how to calculate it
Answers
B=3
C=2
D=1
F=0
that’s how figure it out, find out the total amount of numbers you have and divide it by how many classes you have
Answer:your GPA is 3.914
Step-by-step explanation:your making me realized how stupid i am with those grades T-T
Using the constant if proportionality, write an equation that represents this proportional relationship. Let x be the number of kilograms, and let y be the number of inches.
Answers
Answer:
the question 55 and 66
Step-by-step explanation:
Answer:
x: weight in kilograms
y: distance stretched in inches
proportionality constant: k = 1/3
Step-by-step explanation:
Which of the following pairs of functions are inverses of each other?
Answers
Answer: A
Step-by-step explanation: just took the test
4) Two-thirds of a number subtracted by five is thirty.
Answers
Answer:
x=52.5
Step-by-step explanation:
2/3x-5=30
2/3x=35
x=52.5
Becuase two third of a number subtracted
Solve: 2x – 1125
Yeeeeeeeeeeeeeeeeeeeeer
Answers
Answer:
2(x - 562.5)
Factor out the 2
PLEASE SOMEONE HELP QUICK I WILL GIVE BRAINLIEST
Answers
Answer:
134 deg
Step-by-step explanation:
x + 46 = 180
v + 46 = 180
Solve
I Need help
Which of the following responsibilities are held by federal government. choose all that apply
1. protecting national parks
2.administering healthcare
3.providing social security
4.managing intercity traffic
5.creating garbage collection services
6.chartering city governments into existence
there are two answers
Answers
Answer:
I thinks it's 2 an 3 sorry if I'm wrong btw have a nice day
Estimating Sample Size: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p ∗ = 54 % . You would like to be 90% confident that your esimate is within 1.5% of the true population proportion. How large of a sample size is required? (please do not do any intermediate rounding)
Answers
Answer:
The value is [tex]n = 2887[/tex]
Step-by-step explanation:
From the question we are told that
The population proportion is [tex]p = 0.54[/tex]
The margin of error is [tex]E = 1.5 \% = 0.015[/tex]
From the question we are told the confidence level is 90% , hence the level of significance is
[tex]\alpha = (100 - 90 ) \%[/tex]
=> [tex]\alpha = 0.10[/tex]
Generally from the normal distribution table the critical value of [tex]\frac{\alpha }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.645[/tex]
Generally the sample size is mathematically represented as
[tex]n = [\frac{Z_{\frac{\alpha }{2} } }{E} ]^2 * p(1-p)[/tex]
=> [tex]n = [\frac{1.645 }{0.015} ]^2 * 0.54(1-0.54)[/tex]
=> [tex]n = 2887[/tex]
A quality control inspector has drawn a sample of 15 light bulbs from a recent production lot. Suppose that 60% of the bulbs in the lot are defective. What is the expected value of the number of defective bulbs in the sample
Answers
Answer:
9
Step-by-step explanation:
Expected number of defective is given as :
N x P = np
Where = number of the sample drawn from the production lot
P= percentage of bulbs In The lot which are defective
N = 15
P = 60% = 0.60
So when we do the multiplication,
We have:
NP = 15x0.60
= 9
So in conclusion the expected value of defective bulbs in the sample is 9.
This table gives a few (x,y) pairs of a line in the coordinates plane
What is x look at photo
Answers
Answer: it’s -32,0! - 10 on the left and -7 on the right because of you start at -12,14 you get the y value to 0 and increase by 10 since it is shown to be a increase in each x and y value
Step-by-step explanation:
-4x - 2y - z = 15
12x + 6y + 3z = 45
2x + 5y + 72 = -29