if 15 cars were washed there would be $52.50
Where is the point (-2, -3) located in the coordinate plane?
A. In quadrant IV
B. In quadrant 1
c. In quadrant 11
D. In quadrant III
A teacher surveyed his class about how many played a sport and worked part-time at a job. The Venn diagram shows her results. If a person from the class is randomly selected, what is the probability that person works part-time given that they play a sport?
a)3/5
b)2/5
c)2/11
d)3/11
P( works | sport )
Answer:
2/ 5
Step-by-step explanation:
From the venn diagram, find tbe probability ;
P(work | sport)
Recall :
P(A | B) = P(A n B) / P(B)
From the venn diagram :
P(work | sport) = P(work n sport) / P(sport)
P(work n sport ) = 4
P(sport) = 6 + 4 = 10
Therefore,
P(work | sport) = P(work n sport) / P(sport)
P(work | sport) = 4 / 10
P(work | sport) = 2/5
Sheila bought a box of 25 headbands. When she arranged the headbands by color, she saw that 4 were green, 4 were red, 13 were blue, and 4 were pink. What is the percent of blue headbands she bought?
For the right triangle shown, use the trig functions to find the value of x. Round your answer to the nearest tenth.
A. 26.3
B. 29.7
C. 41.6
D. 32.8
Answer: D) 32.8
=======================================================
Work Shown:
We'll apply the tangent ratio
tan(angle) = opposite/adjacent
tan(64) = x/16
16*tan(64) = x
x = 16*tan(64)
x = 32.8048614652688
x = 32.8
Make sure your calculator is in degree mode. One way to check is to compute tan(45) and you should get 1 as a result.
1/4d-3/4 factor out the coefficient
Answer:
soorrry no
Step-by-step explanation:
does anyone understand this
For this problem, 0.25 in = 50 m. So
11 in = (11 in) • (50/0.25 m/in) = 2200 m
Alternatively, if 0.25 in = 50 m, that means 1 in = 200 m. So 11 in = 11 (200 m) = 2200 m.
Select all of the true statements. Group of answer choices π π π is the area of a circle of radius 1. π π π π is the area of a circle of diameter 1. π π π π is the circumference of a circle of radius 1. π π π π is the circumference of a circle of diameter 1. π π π π is the constant of proportionality relating the diameter of a circle to its circumference. π π π π is the co
Answer:
- π is the area of a circle of radius 1
- π is the circumference of a circle of diameter 1
- π is the constant of proportionality relating the diameter of a circle to its circumference
Step-by-step explanation:
Area of a circle = πr² or πd²/4
Circumference of a circle = 2πr or πd
r is the radius
d is the diameter
If radius = 1
Area = π(1)²
Area = π
hence π is the area of a circle of radius 1 is CORRECT
Given d = 1
Area = πd²/4
Area = π(1)²/4
Area = π/4
Hence π is the area of a circle of diameter 1 is INCORRECT
For the circumference;
C = 2πr or πd
If r =1
C = 2π(1)
C = 2π
Hence π is the circumference of a circle of radius 1 is INCORRECT
Also if d = 1;
C = πd
C = π(1)
C = π
hence π is the circumference of a circle of diameter 1 is CORRECT
Since C = πd, then π is the constant of proportionality relating the diameter of a circle to its circumference is CORRECT
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pls answer im dying here
Answer: A rotation followed by a reflection. The two figures are congruent because (I'm not sure about this one because I don't know the options that the drop-down menu provides.)
How many tiles are there?
Answer:
71
Step-by-step explanation:
3 fair coins are tossed.
a) What is the probability of getting all 3 heads? (My Answer is 1/8)
b) What is the probability of getting all 3 tails? (My Answer is 1/8)
c) What is the probability of getting all 1 head and 2 tails? (My Answer is 3/8)
d) What is the probability of getting all 2 heads and 1 tail? (My Answer is 3/8)
My Question:
e) What do the probabilities from parts (a) to (e) add up to?
Answer:
1/8 + 1/8 + 3/8 + 3/8 = 2/8 + 6/8 = 8/8 = 1
So the answer would be 1.
What are the solutions of the equation x4 – 5x2 - 36 = 0? Use factoring to solve.
A. x = +-2 and x = +-3
B. x = +-2i and x = +-3
C. x = +-2 and x = +-3i
D. x = +-2i and x = +-3i
Answer:
x = -2i and x = 2i
x = 3 and x = - 3
Step-by-step explanation:
x^4 - 5x^2 - 36 = 0
let u = x^2 and substitute
we have:
u^2 - 5u - 36 = 0
(u - 9)(u + 4) = 0
u = 9 and u = - 4
substitute back for u
x^2 = 9
x = 3 and x = - 3
x^2 = -4 -- i am going to assume you've learned imaginary numbers; otherwise, you cannot take the square root of a negative number.
x = -2i and x = 2i
the total recommended area A, in square feet, of a sailboat's sails is given by [{MathJax fullWidth='false' A = 16\sqrt[3]{d^2} }] where d is the displacement of the hull in cubic feet. If a sailboat has 400 ft² of sail, what is the displacement of the hull of the sailboat?
Answer:
125ft³
Step-by-step explanation
Given the area of the sail boat expressed as [tex]A = 16\sqrt[3]{d^2}[/tex]. IF the area is 400ft², we are to find the displacement d;
Substitute A = 400 into the expression given and find d as shown;
[tex]A = 16\sqrt[3]{d^2}\\400 = 16\sqrt[3]{d^2}\\400/16 = \sqrt[3]{d^2}\\cube \ both \ sides\\(400/16)^3=( \sqrt[3]{d^2})^3\\64,000,000/4096 = d^2\\d = \sqrt{64,000,000/4096} \\d = 8,000/64\\d = 125 ft^3[/tex]
Hence the displacement of the hull of the sailboat is 125ft³
The rectangular coordinates of a point are given. Find polar coordinates (r,theta) of this point with expressed in radians. Let r>0 and -2pi
(-2(square root)3,2)
PLEASE HELP URGENT
Answer:
The answer is "The Polar coordinates (r,[tex]\theta)[/tex] =[tex](4,\frac{5 \pi}{6})[/tex]"
Step-by-step explanation:
Given point:
[tex]\to (-2\sqrt{3},2)[/tex]
Formula:
[tex]r=\sqrt{x^2+y^2}\\[/tex]
[tex]=\sqrt{(-2\sqrt{3})^2+(2)^2}\\\\=\sqrt{12+4}\\\\=\sqrt{16}\\\\=\sqrt{4^2}\\\\=4[/tex]
[tex]\therefore \\\\ \tan \theta= \frac{y}{x}\\\\[/tex]
[tex]\tan \theta=\frac{2}{-2\sqrt{3}}\\\\ \tan \theta= -\frac{1}{\sqrt{3}}\\\\ \tan \theta= \frac{5\pi}{6}\\\\ \theta= \frac{5\pi}{6}[/tex]
The Polar coordinates (r,[tex]\theta)[/tex] =[tex](4,\frac{5 \pi}{6})[/tex].
You are renting a house in the Seychelles for a week at $1700. What is the cost per day?
(Show your answer in dollars and cents: For example $300 is entered as 300.00)
Answer:
your paying for each day 56.66
If 14 g of a radioactive substance are present initially and 2 yr later only 7 g remain, how much of the substance will be present after 5
yr?
Answer:
2.47g
Step-by-step explanation:
Given that Ao=14
A(t)= Aoe^kt
k =2yrs
Considering the function where Ao is the initial substance, k is the rate of decay and t is the time.
At the 2nd year A(t) is 7
That is,
7 = 14e^2k
Solve for k
7/14 = e^2k
In(7/14) = 2k
k = In(7/14)÷2
k = In(0.5)/2
k = -0.34657
Hence, A(t)= 14e^-0.34657
So, when t is 5
A(5) = 14e^-0.34657×5
= 2.4749
Approx = 2.47g
Use the graph below. Explain why the intervals on the horizontal axis could make the graph misleading
45.54
a. The intervals are not comparable. The shorter bar spans more than 10 years
b. The intervals are appropriately labeled
c. The intervals are not comparable, but the data on the graph is not misleading
d. The vertical axis does not have an appropriate scale
Answer:
(D) I think
Step-by-step explanation:
Lets look at our answer choices; A.
The intervals are not comparable. The shorter bar spans more than 10 years. When it comes to a horizontal axis it doesn't matter how far it expands,just if it's expanded correctly.
B.The intervals are appropriately labeled. There not it goes from 25 to 50 in just in instant few climbs up.
C.The intervals are not comparable, but the data on the graph is not misleading. It is misleading the graphs are incorrectly labeled.
Which brings us to our answer D.The vertical axis does not have an appropriate scale. it goes from 0-25 25-50 and 50-75 then 75-100. that's a short distance for such numbers that are pretty far apart.
I hope I'm right and I hope this helps:)!
Answer: A: the intervals are not comparable. The shorter bar spans more than 10 years
Step-by-step explanation:
edge 2021
2. Allison has 22 meters of fabric to sew dresses. She uses 3 meters of fabric for each
dress. After how many dresses will Allison need to buy more fabric?
Answer:
7
Step-by-step explanation:
Answer:7 meters
Step-by-step explanation:
3 doesn’t go into 22 equally, but it goes into 21
Plz help plz help plz plz plz plz plz plz
Answer:
i think it might be segment BW
Step-by-step explanation:
Help quickly as possible thank you :)
Answer:
look at the picture, answer is there
9514 1404 393
Answer:
about 100 years
Step-by-step explanation:
2020 -1920 = 100
Outdoor lights were made safe about 100 years ago. (using information given in the problem statement)
_____
Additional comment
2020 -1930 = 90. So, the actual length of time is between 90 and 100 years.
Using additional research, we find mercury vapor lights were made to have a practical color in about 1929, so 91 years ago. They were invented somewhat before the 1920's but had a greenish color. Fluorescent phosphor coating was added in 1929 to make them produce a whiter light.
95 points!!!! please help
When Deema begins her drive, she is 400 mi from home. She drives at an average rate of 50 mph until she gets home.
Draw a graph to represent this situation?
Answer:the sum of the first 20 terms of the sequence 50, 100, 150,.... is equal to
Step-by-step explanation:
Answer:
Just subtract, 400 - 50 = 350, 350 - 50 = 300....etc until you reach (8,0) point on the graph. Graph a straight line down from starting point (0,400) on graph to (8,0). This is your answer subtract 50 from 400 until you reach 0. Starting point (0,400) and ending point (8,0), it's a straight line down ward..
Step-by-step explanation:
Which equation best represents the relationship between x and y in the graph?
Which line is the graph of -3x=y
A B Or C
Answer:
Line A
Step-by-step explanation:
For a polynomial p(x), if p(a) = 0, then which of the following must be a factor of p(x)?
x^2 + a
x — а
x + a
x^2 - a
Answer:
x _ a
Step-by-step explanation:
because if a is zero .then they should be subtraction
Oscar lends his brother $125.00 and charges him 5% interest. How much will Oscar's brother pay back for the loan?
Answer:
131.25 hope this helps
Step-by-step explanation:
use a calculator
solve 4-2×2+2/2-1=?
a. 1
b.0
c.2
d.4
e. -1
Answer:
B.0
Step-by-step explanation:
4-2x2+2/2-1
4-4+1-1
0+0
0
Answer:
answer is 7
Step-by-step explanation:
well its not gonna be e and b for sure then u look closly u can get 4+2 that will be 6+2/2 then you get 7
A machine is used to fill bottles with16 ounces of a liquid. The machine has a standard deviation of 0.2 ounces. A sample of 15 bottles is taken from a 500 bottle run and are tested for the amount of liquid in the bottle. The sample has a mean of 11.75 ounces in each bottle. 99% confidence level. what is the null hypothesis
Answer:
The null hypothesis is [tex]H_o : \mu = 16[/tex]
Step-by-step explanation:
From the question we are told that
The standard deviation is [tex]\sigma = 0.2 \ ounce[/tex]
The sample size is n = 15
The population size is N = 500
The sample mean is [tex]\= x = 11.75 \ ounce[/tex]
The population mean is [tex]\mu = 16\ ounce[/tex]
From the question we are told the confidence level is 95% , hence the level of significance is
[tex]\alpha = (100 - 95 ) \%[/tex]
=> [tex]\alpha = 0.05[/tex]
Generally the null hypothesis is [tex]H_o : \mu = 16[/tex]
56 projects 5:9 ratio divide
Jan and Kim own numbers of marbles
that are in the ratio 5:6
Jan gains 2 more marbles and the ratio is
now 7:8
how many marbles do each own initially?
Answer:
5:6 + 7:8 = 12:14
Jan will have 12 marbles
Kim will have 14 marbles
Jan and Kim own 40 and 48 marbles respectively.
Important information:
Jan and Kim has marbles in ratio 5:6.Jan gains 2 more marbles and the ratio is 7:8.We need to find the initial number of marbles each own.
Ratio:Let the initial number of marbles be [tex]5x[/tex] and [tex]6x[/tex].
Jan gains 2 more marbles and the ratio is 7:8. So,
[tex]\dfrac{5x+2}{6x}=\dfrac{7}{8}[/tex]
[tex]8(5x+2)=7(6x)[/tex]
[tex]40x+16=42x[/tex]
Isolate the variable.
[tex]16=42x-40x[/tex]
[tex]16=2x[/tex]
[tex]\dfrac{16}{2}=x[/tex]
[tex]8=x[/tex]
Now, find the initial number of marbles.
[tex]5(8)=40[/tex]
[tex]6(8)=48[/tex]
Therefore, Jan and Kim own 40 and 48 marbles respectively.
Find out more about 'Ratio' here:
https://brainly.com/question/16054658
PLEASE HELP ME NOW I DON’T UNDERSTAND
Answer:
60
Step-by-step explanation:
1% of alcohol is 0.6 millimeters. That means 100% of alcohol is 60 millimeters.
Which decimal is the largest?
A. 0.03
B. 0.3
C. 0.29
D. 0.039
The answer is B 0.3 because its 3/10 and all of the others is lesss
