Andrew has 30 rocks. He has 10 more rocks then Amanda. He has 15 fewer rocks then Rob. How many rocks does each person have?
Answer:
Amanda has 20, Rob has 45
Step-by-step explanation:
Amanda has ten fewer rocks than Andrew, 30-10=20
Rob has 15 more rocks than Andrew, 30+15=45
What is the factored form of the polynomal? x2-12x+27
o (x+4)(x+3)
o (x-4)(x+3)
o (x+9)(x+3)
o (x-9)(x-3)
Answer:
The answer is [tex](x-9) (x-3)[/tex].
Step-by-step explanation:
This is because when you multiply them together you get
[tex]x^{2}[/tex], [tex]-9x[/tex], [tex]-3x[/tex], and [tex]27[/tex]
When you add the like terms you get,
[tex]x^{2} - 12x +27[/tex]
What’s the answer to this question HELP ME !!
Answer:
x=6
Step-by-step explanation:
The picture is a little unclear but I hope this is true...
To find the perimeter you need to add the sides of the triangles and the question says that the perimeters of the triangles are equal. So,...
(2x+4)+(2x)+(2x+3)=(3x+1)+(2x)+(2x)
2x+4+2x+2x+3=3x+1+2x+2x
4+2x+3=3x+1
7+2x=3x+1
2x-3x=1-7
-x=-6
x=6
A test has been developed to detect a particular type of arthritis in individuals over 50 years old. From a national survey it is known that approximately 10% of the individuals in this age group suffer from this form of arthritis. The proposed test was given to individuals with confirmed arthritics disease, and a correct test result was obtained in 85% of the cases. When the test was administered to individuals of the same age group who were known to be free of the disease, 4% were reported to have the disease. What is the probability that an individual has this disease given that the test indicates its presence
Answer:
The probability that an individual has this disease given that the test indicates its presence is 0.1
Step-by-step explanation:
Let A be the event which indicates Having disease
Let B be the event in which test indicates that disease presence
Now we are given that 10% of the individuals in this age group suffer from this form of arthritis
So, P(A)=0.1
We are also given that the proposed test was given to individuals with confirmed arthritics disease, and a correct test result was obtained in 85% of the cases.
P(B|A)=0.85
Now we are given that. When the test was administered to individuals of the same age group who were known to be free of the disease, 4% were reported to have the disease
So,P(B|A')=0.04
We are supposed to find the probability that an individual has this disease given that the test indicates its presence i.e. P(A|B)
So we will use Bayes theorem
[tex]P(A|B)=\frac{P(B|A) P(A)}{\sum P(B|A) P(A)}[/tex]
[tex]P(A|B)=\frac{0.85 \times 0.1}{0.85 \times 0.1+0.85 \times 0.9}=0.1[/tex]
Hence the probability that an individual has this disease given that the test indicates its presence is 0.1
Please Help! FAST! Multiple Choice! Brainlest!
Answer:
B is the answer
Step-by-step explanation:
the rulers at store a cost much
What is StartFraction 5 Over 8 EndFraction divided by One-fourth?
Answer:
[tex]\frac{5}{2}[/tex] improper fraction or [tex]2\frac{1}{2}[/tex] mixed number
Step-by-step explanation:
To find the answer you would need to do [tex]\frac{5}{8}[/tex] divided by [tex]\frac{1}{4}[/tex]
Hope this helps!
The division of the fraction numbers 5/8 and 1/4 in the decimal form will be 2.5.
What is Algebra?Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and precisely.
The numbers are given below.
5/8 and 1/4
Then the division of the numbers 5/8 and 1/4 will be given by putting a division sign between them. Then we have
⇒ (5/8) ÷ (1/4)
⇒ (5/8) x (4)
⇒ 5/2
⇒ 2.5
The division of the fraction numbers 5/8 and 1/4 in the decimal form will be 2.5.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
The measures of two vertical angles are 29° and (2x + 3)º. Find the value of x .
Answer:
Vertical Angles!
Step-by-step explanation:
Very simple!
Vertical angles are a pair of angles that are equal in degree measure.
Essentially, they are equal to each other. Nothing more to it.
This means that [tex]29=2x+3[/tex]!
I presume you have done math before, so this solves to be: [tex]x=13[/tex]
(I don't have a degree sign, but it should be there in your answer.)
Hope this helps!
P.S. How's life?
7. In January, a small business had a profit of $6. In
February, the company lost $9. What was the
company's total profit or loss for January and February?
Answer:
The company lost 3 dollars
9-6= (-3)
Step-by-step explanation:
The mass of a substance is 8×10⁹ micrograms. If one microgram is equal to 0.000001 grams, what is the substances mass in grams written in scientific notation?
Answer:
The mass of the substance is [tex]\mathit{8\cdot 10^{3}}[/tex] grams.
Step-by-step explanation:
Scientific Notation
The mass of a substance is [tex]8\cdot 10^9[/tex] micrograms and one microgram is 0.000001 grams.
This last unit needs to be expressed in scientific notation:
[tex]0.000001 grams = 1\cdot 10^{-6}[/tex]
The mass of the substance in grams is calculated by:
[tex]8\cdot 10^9 * 1\cdot 10^{-6}[/tex]
Multiply the magnitudes and add the exponents:
[tex]8\cdot 10^9 * 1\cdot 10^{-6}=8\cdot 10^{-6+9}=8\cdot 10^{3}[/tex]
The mass of the substance is [tex]\mathbf{8\cdot 10^{3}}[/tex] grams.
tan(43)-tan(13)/1+tan(43)tan(13)
Answer:
tan(13)-tan(2)
Step-by-step explanation:
= Monthsarry namin ng bebe ko
4 1/3 x 3/5 express your awnser in simplest form.
Answer:
2 3/5
Step-by-step explanation:
1.) 15 — 2y = Зу Help!!!
Answer:
y=3 the answer is 9 to the equation
Rectangle a measures 9 inches by 3 inches. Rectangle b is a scaled copy of rectangle a .select a set of measurement pairs that could be the dimensions of of rectangle b
Answer:
Dimensions of Rectangle B will be 9x inches by 3x inches where x is a scaling factor.
Step-by-step explanation:
Scaled Copy: It means that the rectangle A is related to rectangle B by some scaling (multiplying) factor x.
As we are given Dimensions of rectangle A = 9 inches by 3 inches
Then for any scaling factor x the dimensions of rectangle B will be:
Dimensions of Rectangle B = x * ( Dimensions of rectangle A)
Dimension of rectangle B = x * (9 inches by 3 inches)
Dimensions of rectangle B = 9x inches by 3x inches
For more understanding let we assume that rectangle B is scaled copy of rectangle A by scaling factor x=3; then we will have the dimensions of rectangle B as under:
For scaling factor (x) = 3;
Dimensions of Rectangle B = x * ( Dimensions of rectangle A)
Dimensions of rectangle B = 3 (9 inches by 3 inches)
Dimensions of rectangle B = 27 inches by 9 inches
On the other hand for scaling factor x=0.75, the dimensions of rectangle B will become as under;
Dimensions of Rectangle B = x * ( Dimensions of rectangle A)
Dimensions of rectangle B = 0.75 (9 inches by 3 inches)
Dimensions of rectangle B = 6.75 inches by 2.25 inches
If a seed is planted, it has a 95% chance of growing into a healthy plant. If 10 seeds are planted, what is the probability that exactly 2 don't grow?
Answer:
The probability that exactly 2 don't grow is 0.075 or 7.5%
Step-by-step explanation:
Binomial Distribution
Let's consider a random experience with only two possible outcomes. Call p to the probability that the event has a successful outcome and q to the unsuccessful outcome.
It's clear that p+q=1, or q=1-p.
Now repeat the random experience n times. We want to calculate the probability of getting x successful outcomes. This can be done with the following formula:
[tex]\displaystyle P_{x} = {n \choose x} p^{x} q^{n-x}[/tex]
Where
[tex]\displaystyle {n \choose x}[/tex]
Is the number of combinations:
[tex]\displaystyle {n \choose x} =_nC_x=\frac{n !}{x ! (n-x) !}[/tex]
For the problem to solve, each seed has a p=0.95 probability of growing into a healthy plant. The value of q=1-0.95=0.05.
The experience is repeated n=10 times and we want to estimate the probability that 2 of them don't grow. Note this last data is not directly the value of x because it's not related to success but with no success. The value of x is x=10-2=8. That means, 8 out of 10 seeds grow.
Apply the formula:
[tex]\displaystyle P_{8} = {10 \choose 8} \cdot 0.95^{8} \cdot 0.05^{10-8}[/tex]
[tex]\displaystyle P_{8} = 45\cdot 0.95^{8} 0.05^{2}[/tex]
[tex]\displaystyle P_{8} = 0.075[/tex]
The probability that exactly 2 don't grow is 0.075 or 7.5%
Finish this for points fractions to decimals
1: 0.7142857143
2: 0.04761904762
3: 0.2142857143
4: 0.8666666667
5: 0.2727272727
6: 0.3888888889
7: 0.3333333333
8: 0.4444444444
9: 0.3333333333
10: 0.3571428571
11: 0.36
12: 0.8
13: 0.2307692308
14: 0.875
15: 0.8
16: 0.04761904762
Dancing Pools sells swimming pools in 4 sizes. The small pool is 72 feet long and 16 feet wide. The medium pool is 80 feet long and 18 feet wide. The large pool is 88 by 20. If the new superduper Coffeetable pool is 96 feet long, how wide will it be?
A 28 feet wide
b 22 feet wide
c 24 feet wide
d 26 feet wide
Answer:
b
Step-by-step explanation:
Answer:
B. 22 feet.
Step-by-step explanation:
The width is adding 2 feet for every time the length is adding 8 feet. So, 88+8=96, and 20+2=22.
k(x) = 6x – 12; k(x) = 18
Answer:
x=5
Step-by-step explanation:
k(x)=6x–12
18=6x–12
18+12=6x
30=6x
30/6=6x/6
x=5
i think it is clear answer.
someone please help me with this !! Put it in order !! will mark as brainlest!!
Answer:
i dont no hindi ko alam eh
Step-by-step explanation:
-Given
-4
-Divison Property Of Equality
-3
Complete the table for this equation
Answer:
x=2
y= -4/3
y=2/3
x=-4
Step-by-step explanation:
4x-6(0)=8
4x-0=8
4x=8
x=2
4(0)-6y=8
0-6y=8
-6y=8
y=-4/3
4(3)-6y=8
12-6y=8
-6y=-4
y=2/3
4x-6(-4)=8
4x+24=8
4x=-16
x=-4
Jamier buys a bus pass for $30. Every time he rides the bus, money is deducted from the value of the pass. He rode 12 times and $24 was deducted from the value of the pass. How much does each bus ride cost?
Answer:
each bus has cost $2 thats it
URGENT!!!!!!!!!!! 25
Answer:
Geometry so easy
Step-by-step explanation:
You can do it..
Please help me answer this <3
Answer:
x = 30
Step-by-step explanation:
15 = 1/2x
multiply both sides of equation by 2
30 = x
Use the labled point to write a point slope form for the line
Answer:
The point-slope form of the line is y - 3 = -2(x + 2)
Step-by-step explanation:
The point-slope form of the equation of a line is
y - y1 = m(x - x1), where
(x1, y1) is a point on the linem is the slope of the lineThe rule of the slope is [tex]m=\frac{y2-y1}{x2-x1}[/tex] , where
(x1, y1) and (x2, y2) are two points on the line.Let us use these rules to solve the question
∵ (-2, 3) and (0, -1) are two points on the line
∴ x1 = -2 and y1 = 3
∴ x2 = 0 and y2 = -1
→ Substitute them in the rule of the slope to find it
∵ m = [tex]\frac{-1-3}{0--2}=\frac{-4}{0+2}=\frac{-4}{2}=-2[/tex]
∴ m = -2
→ Substitute the value of m and point (-2, 3) in the form of the
equation above
∵ m = -2 and (x1, y1) = (-2, 3)
∴ y - 3 = -2(x - -2)
→ Remember (-)(-) = (+)
∴ y - 3 = -2(x + 2)
∴ The point-slope form of the line is y - 3 = -2(x + 2)
Amanda wrote a list that contained only multiples of 16. Which of the following lists could be Amanda’s list?
Question 2 options:
{1, 2, 4, 8, 16}
{16, 32, 48, 64, 80}
{16, 32, 42, 64, 84}
{4, 8, 12, 16, 20, 24, 28}
Answer:
2nd answer. (16,32,48,64,80)
Step-by-step explanation:
Please help me i don’t understand it :(
Answer:
Step-by-step explanation:
Explaining the Basic Concept:
This is a piecewise function, which means that it is made up of several different functions which all have different domains
In this question, we have 3 'pieces' in our piecewise function
the domain of each piece is:
1. x < -1
2. -1 ≤ x ≤ 2
3. x > 2
we will use the function related with the respective domain
Finding the values of the function:
h(-4)
Here, our input value is -4
we notice that -4 is in part of the first domain
therefore, -4 is in the domain of the first function
So, we will use the first function
h(x) = -(x/4) + 2 (for x < -1)
replacing x with -4
h(-4) = -(-4/4) + 2
h(-4) = 1 + 2
h(-4) = 3
h(1):
Here, our input value is 1
we notice that 1 is a part of the second domain
Hence, 1 is in the domain of the second function
So, we will use the second function
h(x) = -(x-1)² + 2 (for -1 ≤ x ≤ 2)
replacing x with 1
h(1) = -(1-1)² + 2
h(1) = -(0)² + 2
h(1) = 2
h(2):
Here, out input value is 2
We notice that 2 is a part of the second domain
Hence, 2 is a part of the domain of the second function
So, we will use the second function
h(x) = -(x-1)² + 2 (for -1 ≤ x ≤ 2)
replacing x with 2
h(2) = -(2-1)² + 2
h(2) = -(1)² + 2
h(2) = - 1 + 2
h(2) = 1
Therefore:
h(-4) = 3
h(1) = 2
h(2) = 1
3. What is the y-intercept of the line
5x – 3y = 15? Write your answer as an ordered
pair.
Answer:
(0, -5)
Step-by-step explanation:
For Y-intercept: put X = 0
5x-3y=15
-3y=15-5x
3y=-15+5x
y=-5+5/3x
y=5/3x-5
Helpppppppp againnnnnn
Answer:
100.40
Step-by-step explanation:
if 6 members has paid, then the remaining 8 will be 8 x 12.55 = 100.4
Answer:
The answer is $100.40
Step-by-step explanation:
ok. their are 14 members. 6 members payed their dues in week 1. so, subtract 6 from 14. 14 - 6 = 8. Now, the due is $12.55. 8 members payed their dues in week 2, so multiply 8 by 12.55. 8 x 12.55 = 100.50 the answer SHOULD be $100.50 i would think, but there is not an option for that. so, i would pick option 4, because that is .10 off from 100.50. Good luck!!
PLEASE HELP!!!!!
A line passes through the point (-8, -9) and has a slope of -
5
4
Write an equation in slope-intercept form for this line.
Answer:
y = -5/4x -19
Step-by-step explanation:
It is often convenient to simplify a point-slope form of the equation.
y = m(x -h) +k . . . . . line with slope m through (h, k)
y = -5/4(x -(-8)) -9 . . . . fill in given values
y = -5/4x -10 -9
y = -5/4x -19
Mr. Tonroy hired Michael to make balloon animals for the children who visited a carnival. Michael was paid a base fee of $100.00 plus a fee of $1.50 per balloon animal made. If Michael was paid $295.00, how many balloon animals did Michael make?
Answer:
130 balloons
Step-by-step explanation:
The customer Karen has a white rock. The rock has a mass of 14.3g and a volume of 3.2cm3. What is the density of the rock?
Answer:
The answer is 4.47 g/cm³Step-by-step explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 14.3 g
volume = 3.2 cm³
We have
[tex]density = \frac{14.3}{3.2} \\ = 4.46875[/tex]
We have the final answer as
4.47 g/cm³Hope this helps you
Answer:
The answer is 4.47 g/cm³
Step-by-step explanation: