a student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?
How can we check the binomial factors to verify that they are truly factors? Are the factors (x + 5)(x – 8) truly factors of x2 – 2x – 30. Show your work.
Use complete sentences to describe the domain of the cosine function.
the cost of 10 yearbooks $250 what is the cost of one yearbook
hey can you please help me posted picture of question
You save three-fifths of your paycheck. Which decimal is equivalent to that fraction?
Answer: 0.6
Step-by-step explanation:
The fractions have the form shown below:
[tex]\frac{a}{b}[/tex]
Where: a is the numerator and b is the denominator.
To convert a fraction to a decimal number, you must divide the numerator by the denominator.
You know that the fraction is three-fifths, which is written as following:
[tex]\frac{3}{5}[/tex]
Therefore, when you divide the numerator 3 by the denominator 5, you obtain the following decimal number which is equivalent to that fraction:
[tex]\frac{3}{5}=0.6[/tex]
Answer:
0.6
Step-by-step explanation:
round 0.246 to the nearest tenth
hey can you please help me posted picture of question
hey can you please help me posted picture of question
The correct answer for this completion exercise shown above is the second option (Option B), which is: B. Parent
Therefore, you have:"In each family of function, the parent function is the most basic function in the family"
By definition, the most basic fucntion in each family of functions is called “parent fucntion”. A family of function is a set of function that when you graph them, you can notice that they have common charateristics.
[tex]42 \times 42 \times 29 = [/tex]
what is the limit of f (×) as x approaches - infinty
Final answer:
The limit of a function as x approaches negative infinity is the value that the function f(x) approaches as x becomes very large in the negative direction. For example, the limit of 1/x is 0 as x approaches negative infinity, while the limit of 1/x² approaches positive infinity. Functions that oscillate, like sin(\u03C0/x), do not have a limit at infinity.
Explanation:
When discussing the limit of a function f(x) as x approaches negative infinity, we are essentially asking what value f(x) gets closer to as x becomes very large and negative. For instance, consider the function 1/x. As x approaches negative infinity, 1/x gets closer to 0, and we say that the limit of 1/x as x approaches negative infinity is 0. Similarly, for a function like 1/x² which "blows up" or increases rapidly as x approaches 0 from either side, we notice that as x approaches negative infinity, the function approaches positive infinity since the squared term always results in a positive number.
However, not all functions have limits at infinity. For functions that oscillate, such as sin(\u03C0/x), as x approaches 0, it oscillates indefinitely between -1 and +1 and does not approach a specific value.
The formal definition of a limit at infinity states: If there is a number L such that f(x) gets arbitrarily close to L when x is sufficiently large (positively or negatively), we write lim f(x) = L as x → -∞.
Enter a recursive rule for the geometric sequence. 4, −16, 64, −256, ...
Answer:
The recursive rule is an = (-4) · an-1
Step-by-step explanation:
* Lets explain recursive formula for a geometric sequence:
1. Determine if the sequence is geometric (Do you multiply, or divide, the same amount from one term to the next?)
2. Find the common ratio. (The number you multiply or divide.)
3. Create a recursive formula by stating the first term, and then stating the formula to be the common ratio times the previous term.
# a1 = first term;
# an= r • an-1
- Where:
a1 = the first term in the sequence
an = the nth term in the sequence
an-1 = the term before the nth term
n = the term number
r = the common ratio
Ex: {3, 6, 12, 24, 48, 96, ...}
first term = 3, common ratio = 2
The recursive formula an = 2 · an-1
* In our problem:
- a1 = 4
- r = -16/4 = -4
- The recursive rule is
# an = (-4) · an-1
Answer:
here is the correct answer.
Step-by-step explanation:
Form a sequence that has two arithmetic means between -1 and 59.
a.
-1, 29, 29, 59
c.
19, -1, 59, 39
b.
-1, 19, 39, 59
d.
-1, 14, 29, 44, 59
which is the coefficient in the algebraic expression 12x + z^4 ?
If i = −1 and a and b are non-zero real numbers, what is 1a+bi ?
What are the dimensions of the image at fraction 1 over 2 times its current size?
Length = 4 inches, width = 5 inches
Length = 6 inches, width = 8 inches
Length = 10 inches, width = 12 inches
Length = 16 inches, width = 20 inches
Answer:
Length = 4 inches, width = 5 inches
Step-by-step explanation:
What is the perimeter of the rectangle? Write your answer in scientific notation. The area is 2.76 x 10 pw12 the width is 4.6 x 10 pw5 pw is the power
To calculate the perimeter of a rectangle in scientific notation, divide the given area by the width to find the length, then use the perimeter formula (P = 2×length + 2×width), accounting for the power of 10 in your calculations to maintain proper notation.
Explanation:The perimeter of a rectangle can be found using the formula P = 2×length + 2×width. Given the area of the rectangle (2.76 x 10^12 square units) and the width (4.6 x 10^5 units), we can find the length by dividing the area by the width. The length would therefore be the area divided by the width which is (2.76 x 10^12) / (4.6 x 10^5) = 6 x 10^6 units. Now that we have the length and width, we can calculate the perimeter by substituting into the formula: P = 2×(6 x 10^6) + 2×(4.6 x 10^5) = 1.2 x 10^7 + 9.2 x 10^5. Converting the width to the same power of 10, we get P = 1.2 x 10^7 + 0.092 x 10^7 = 1.292 x 10^7 units. This expresses the perimeter in scientific notation.
Which of the following is another way to express the equation 16 = -9 + z?
A.16 = z - 9
B.16 = z + 9
C.16 = -z + 9
D.16 = -z - 9
Answer:
16 = z - 9
Step-by-step explanation:
I did the same problem and answered this, 16 = z - 9. It was correct.
If, in 7 years, Susan will be 2 times as old as she was 3 years ago, what is Susan’s present age? PLEAZE EXPLAIN HOW AND DO IT WITH USING X
Answer:
Susan is 13 years old.
Step-by-step explanation:
Susan=x
After 7 years she will be 7+x then she will be 2x as old as she was 3 year ago.
age 3 yrs ago=x-3
2x-6=7+x
if you simplify....
now she is 13
hope it helps!!!!
Michelle collects US, Canadian and Mexican stamps. In her collection 80% of the stamps are U.S. and Mexican stamps. there are 3 times as many U.S. stamps as Mexican stamps. WHat percent of Michelle's collections is made up of U.S. stamps?
Final answer:
Michelle's stamp collection consists of 60% U.S. stamps, determined by solving equations based on the given information that U.S. and Mexican stamps make up 80% of her collection and there are three times as many U.S. stamps as Mexican stamps.
Explanation:
The student asked what percent of Michelle's stamp collection is made up of U.S. stamps if 80% are U.S. and Mexican stamps and there are 3 times as many U.S. stamps as Mexican stamps. To solve this, let's call the percentage of U.S. stamps 'U' and the percentage of Mexican stamps 'M'. According to the given information, U + M = 80%, and U = 3M.
We substitute the second expression into the first to get 3M + M = 80%, which simplifies to 4M = 80%. Dividing both sides by 4 gives M = 20%. As the number of U.S. stamps is three times the number of Mexican stamps, we calculate U as 3 × 20% = 60%. So, the percentage of U.S. stamps in Michelle's collection is 60%.
Marisol and Mimi walked the same distance from their school to a shopping mall. Marisol walked 2 miles per hour, while Mimi left an hour later and walked 3 miles per hour. If they reached the mall at the same time how far is the mall from their school?
A math club took a test. Twelve of the members had an average score of 80. Eighteen of the members had an average score of 86.
what was the class average score?
If the racetrack publishes that the odds in favor of a horse winning a race are 5 to 9, what is probability that the horse will not win the race?
y equals x + z + 5 Z equals -3 y - 3 2x minus y equals negative 4 How can i solve using 3 variable systems of equation
Simplify the expression. (x1/8 y1/4)2
Answer:
Step-by-step explanation:
C) x1/4y1/2
A sample of 4 different calculators is randomly selected from a group containing 13 that are defective and 26 that have no defects. what is the probability that at least one of the calculators is defective? (hint: think complement)
What shape is the graph of the equation below? (x-5)^2/4^2 + y^2/7^2=1 A. A line B. A circle C. A parabola opening to the right D. A hyperbola opening to the right and left E. A hyperbola opening up and down F. An ellipse
the answer to your question
is the letter C
Let's explore the equation to see why the graph of the formula that is given sounds like:
((x−5)²/(4)²) + (y²/(7)²) = 1
This equation represents the standard form of an ellipse:
((x−h)²/a²) + ((y-k)²/(b)²) = 1
Where:
*The ellipse's center is (h,k).
*The semi-major axis's length, or horizontal radius, is denoted by a.
*The semi-minor axis's length, or vertical radius, is b.
Comparing the given equation to the standard form, we see that:
*h=5 (center is at x=5)
*a=4 (semi-major axis length)
*b=7 (semi-minor axis length)
Since both a and b are positive and the denominators of both terms are squared, the graph represents an ellipse. Therefore, the correct answer is F. An ellipse.
The given equation is in the form of an ellipse:
((x−5)²/(4)²) + (y²/(7)²) = 1
It matches the standard form of an ellipse equation:
((x−h)²/a²) + ((y-k)²/(b)²) = 1
where (h,k) is the center of the ellipse, and a and b are the lengths of the semi-major and semi-minor axes, respectively.
In this equation, h=5, a=4, and b=7, indicating the ellipse is centered at (5,0) with a horizontal radius of 4 and a vertical radius of 7.
Therefore, the correct answer is F. An ellipse.
Complete Question:
What shape is the graph of the equation below?
A. A line
B. A circle
C. A parabola opening to the right
D. A hyperbola opening to the right and left
E. A hyperbola opening up and down
F. An ellipse
A combination lock requires three numbers from 1 to 25. how many combinations are possible? did you use the sum rule or the product rule? (note that although we use the term combination with locks, order matters.)
Find the value of x for which m//n
A.
31
B.
33
C.
39
D.
41
If a household has at least one cat, there is a 30% probability that the household has at least one dog. thirty percent of households have at least one cat and 33% of households have at least one dog. given that a household does not have at least one dog, the probability that the same household does not have at least one cat is
The probability that a household does not have a cat, given that it doesn't have a dog is 70%. This is a question about conditional probability, and can be solved by applying Bayes theorem and the concept of complements in probability.
Explanation:Given the question, we need to calculate the probability that a household does not have a cat if it is known that the same household does not have a dog. This question applies to the concept of conditional probability in mathematics.
Let's consider the event of a household having at least one cat as C and the event of a household having at least one dog as D. The question tells us that the probability of a household having a dog given it has a cat P(D|C) = 0.30 and the probability of a household having a cat P(C) = 0.30, and the probability of having a dog P(D) = 0.33. We are asked to find the probability of a house not having a cat given it does not have a dog, P(C'|D').
Using Bayes theorem, the conditional probability P(C'|D') can be calculated using the formula: P(C' | D') = P(D' | C') * P(C') / P(D'), where P(C') is the probability of not having a cat and P(D'| C') is the probability of not having a dog given that there is no cat.
First, find the complement percentages. P(C') = 1 - P(C) = 0.70 and P(D') = 1 - P(D) = 0.67. Then, because P(D'| C') = P(D') (as having a dog does not depend on whether or not you have a cat), the formula simplifies to: P(C' | D') = P(C'). So the probability that a household does not have a cat, given that it doesn't have a dog is 0.70 or 70%.
Learn more about Conditional Probability here:https://brainly.com/question/32171649
#SPJ2