Can someone help me please
Answer:
The ratio is 6
How many significant figures in 20340 ?
There are 4 significant figures in 20340.
Write 27 as a product of primes.
Use index notation where appropriate.
Answer:
3 x 3 x 3 = 3^3
Step-by-step explanation:
27 as a product of it's primes = 3 x 3 x 3 In index notation= 3^3
7.51 rounded to the nearest tenth
Answer:
7.5
Step-by-step explanation:
Answer:
7.5
Step-by-step explanation:
I am a senior so I am right
The price of one share of a company declined $2.50 per day for 4 days in a row. What is the overall change in the price of one share?
Answer:
$10
Step-by-step explanation:
$2.50 X 4
solve each inequality and graph the solutions , ILL MARK BRAINLIST !!!!
Answer:
see below
Step-by-step explanation:
2d+21 ≤11
Subtract 21
2d+21-21 ≤11 -21
2d ≤-10
Divide by 2
2d/2 ≤-10/2
d≤-5
A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 90% of the time when the person has the virus and 15% of the time when the person does not have the virus. (This 15% result is called a false positive.) Let A be the event "the person is infected" and B be the event "the person tests positive." (a) Using Bayes' Theorem, when a person tests positive, determine the probability that the person is infected. (b) Using Bayes' Theorem, when a person tests negative, determine the probability that the person is not infected.
Answer:
a) P[A/B] = 0,019 or P[A/B] = 1,9 %
b) P[A- /B-] = 0,9996 or P[A- /B-] = 99,96 %
Step-by-step explanation:
Bayes Theorem :
P[A/B] = P(A) * P[B/A] / P(B)
The branches of events are as follows
Condition 1 real infection 1/300 and not infection 299/300
Then
1.- 1/300 299/300
When the test is done (virus present) 0,9 (+) 0,15 (-)
2.- 299/300
When the test is done ( no virus ) 0,15 (+) 0,85 (-)
Then:
P(A) = event person infected P(B) = person test positive
a) P[A/B] = P(A) * P[B/A] / P(B)
where P(A) = 1/300 = 0,0033 P[B/A] = 0,9
Then P(A) * P[B/A] = 0,0033*0,9 = 0,00297
P(B) is ( 1/300 )*0,9 + (299/300)*0,15
P(B) = 0,0033*0,9 + 0,9966*0,15 ⇒ P(B) = 0,1524
Finally
P[A/B] = 0,00297 /0,1524
P[A/B] = 0,019 or P[A/B] = 1,9 %
b) Following sames steps:
P[A- /B-] = (299/300) * 0,85 / (299/300) * 0,85 + (1/300 * 0,1)
P[A- /B-] = 0,8471 /0,8474
P[A- /B-] = 0,9996 or P[A- /B-] = 99,96 %
−8 3/4÷2 1/6 please show me ur work
Answer:
- 4 1/26Step-by-step explanation:
Solving in steps:
- 8 3/4 ÷ 2 1/6 =- 35/4 ÷ 13/6 =- 35/4 × 6/13 = - 35/2 × 3/13 =- 105/26 =- 4 1/26how do you right
0.125 as a whole number
Step-by-step explanation:
divide 1 by 0.1 to 5 and this will tell you what you need to multiply it by in order to make 0.125
1/0.125=8
thus : 8 *0.125 =1
how many decimal places would the answer have when you find the product of 43.09281×5.092?
Answer:
219.42858852
Step-by-step explanation:
does y= x squared represent a linear function
Answer:
no
Step-by-step explanation:
most probably a linear function. y = mx +b. what you have to notice here is the X, if the X has no exponents on it, then it is usually linear, but if the X is X squared or higher then it would not be a linear function.
the student council is selling a dozen donuts for $15. what is the unit cost?
Answer:
$1.25
Step-by-step explanation:
15 divided by a dozen (12) is 1.25
Have a great day!
Answer:
$1.25.
Step-by-step explanation:
15/12 = $1.25
Beverly wants to make 2 1/2 recipes of play clay for her daughter’s birthday party. How much salt will she need in all?
Answer: D
Step-by-step explanation:
To find the answer for this problem, you will need to convert all the terms into improper fractions. Since you want 2 1/2 of the recipe, you need to multiply by 2 1/2.
2 1/2 = 5/2
3 2/3 = 11/3
And then you would multiply and solve:
5/2 * 11/3 = 55/6
55/6 = 9 1/6
The answer is D :)
Answer:
There are 3 2/3 teaspoons of salt
Step-by-step explanation:
11.
What must the slope of a line be if it is parallel to the line
12x + 8y = -6?
A) –
B)
C) 1
D) -12
3
WIN
2
o
A
O
B
С
o o
D
Answer:
A) -3/2
Step-by-step explanation:
Slope-Intercept Form: y = mx + b
m - slope
b - y-intercept
Step 1: Write equation
12x + 8y = -6
Step 2: Write in slope-intercept form
Subtract 12x on both sides: 8y = -12x - 6Divide both sides by 8: y = -3/2x - 3/4Step 3: Find slope
Slope of a parallel line always has the same slope of the original line.
m = -3/2 (Original)
m = -3/2 (Parallel)
3. Which ordered pair is a solution of the equation y = x – 2? (1 point) (3, 1) (1, 3) (–1, 3) (3, –1)
2 in every 7 students will need
glasses before they turn 15. If
there are 203 students in the
freshman class, how many will
need glasses before they turn 15?
I need help with this
Answer:
Not similar
Step-by-step explanation:
Even though
8/2=16/4,
10/3 does not have any relation to the rest. Still make sure if im right, but hope this helps!
which two layers in this model represent parts of the earth that are mostly iron and nickel
Answer:
inner and outer core are the ones that have iron and nickel
Step-by-step explanation:
The answer is inner and outer core
The model below is used to represent the area of a
square with a side length of /64 units.
Answer:
8
Step-by-step explanation:
Because you can count the squares on the side or you can just do the square root of 64.
what is the product of 50x0.08 M
Answer:
4
Step-by-step explanation:
greatest common factor for 32-4x
Answer:
4
out of
32
−
4
x
.
4
(
8
−
x
)
Step-by-step explanation:
What is the product of 9,028 x 100,000 written in expanded form
Answer:
902,800,000
Step-by-step explanation:
902800000, is the product of 9,028 x 100,000.
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
Here, given that,
9,028 x 100,000
=902800000
Hence, 902800000, is the product of 9,028 x 100,000.
To learn more on multiplication click:
brainly.com/question/5992872
#SPJ2
URGENT!!!!! WILL MARK BRAINLIEST!!!!
Options:
AAS
SAS
AAA
ASA
Please help me i will give all of my points 14
Please help i need this right now
Answer:
3 7/12
Step-by-step explanation:
What is the image of figure B after a -90° rotation about the origin?
A B
B. X
C. Y
D. Z
Answer:
D. Z
Step-by-step explanation: Just took the practice test
choose the expression that completes the equation 33 / 3 + 10=_______
1. 2(10+1)
2. 10(1+1)
3. 3(6+1)
4 5(3+5)
Answer:
the answer is number 3. 3 ( 6+1 )
Grace is taking a road trip that is 1,133 miles long. She has already driven 978 miles. How many
more miles does Grace need to drive?
1122 miles
Answer:
155 miles
Step-by-step explanation:
explain how the percent equation relates proportional quantities
Use cross product to determine if the two ratios form a proportion. Here we can see that 2/16 and 5/40 are proportions since their cross products are equal. Percent means hundredths or per hundred and is written with the symbol, %. Percent is a ratio were we compare numbers to 100 which means that 1% is 1/100.
The proportion is a general case of percentage. (Refer to the examples explained below).
What is the percent equation?Proportion is a general case of percentage. It describes how much of the total a particular sample is. For example, if a pie contains eight slices and you have five, the proportion is 5/8. You have a total of five out of eight. A percent (the number of parts out of 100) is a special case of proportion where the denominator (“whole”) equals 100 parts. I suspect that percentages were created to allow a normalized comparison of proportions when the total number of parts was not the same. Imagine a small pizza with 6 slices and a large pizza with 8 slices. If Tom got 4 from the first and Ram got 5 from the second, it is not immediately clear who got more from the second. Converting 4/6 and 5/8 to percentages (66.7 and 62.5) allows you to see when the denominator equals who got relatively "more".Furthermore, I suspect that 100 was used because we live in a 10-base world (we have 10 fingers, which makes it natural).Therefore, the proportion is a general case of percentage.
Know more about percent equations here:
https://brainly.com/question/9553743
#SPJ2
solve for y
2/3+y -1/9=7/9
Answer: y = 2/9
..............................
Question
The force needed to break a board varies inversely with its length. Richard uses 24 pounds of pressure to break a 2-foot-
long board. How many pounds of pressure is needed to break a 5-foot-long board?
Provide your answer below:
Answer:
9.6
Step-by-step explanation:
60 pounds of pressure is needed to break a 5-foot-long board,
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
here, we have,
Richard uses 24 pounds of pressure to break a 2-foot-long board.
How many pounds of pressure is needed to break a 5-foot-long board,
we have to find.
i.e. 24/2 * 5
=12*5
=60
hence, 60 pounds of pressure is needed to break a 5-foot-long board,
To learn more on multiplication click:
brainly.com/question/5992872
#SPJ2
