Answer:
x = ± 5
Step-by-step explanation:
Given
x² - 4x - 25 = - 4x ( add 4x to both sides )
x² - 25 = 0 ( add 25 to both sides )
x² = 25 ( take the square root of both sides )
x = ± [tex]\sqrt{25}[/tex] = ± 5
i cannot figure this problem out
Answer:
31 customers
Step-by-step explanation:
First, find the percentage of customers who wore a large. This is 26/(26 + 52), or 1/3 of the customers. Take 1/3 of the new customers, and 1/3 of 93 is 31. 31 customers will wear a size large.
Hopefully this helps! Let me know if you have any questions
Write the word sentence as an inequality.
A number j minus 14 is less than — 21. DID I GET THIS RIGHT??
Does this graph represent a function?
Can someone just tell me if my estimate is A: High / B: low / or C : difficult to tell on all please !
1. high
2. high
3.diff
4.low.
5.high
Graph the integer 0 to its opposite on the number line
Answer:
It would be graphed at 0.
Step-by-step explanation: The answer would be graphed at 0 on a number line because 0 is its opposite.
Hope this helps!
What is the solution to the inequality? -3x - 14 < -5
Answer:
-3x - 14 < -5
-3x < 9 (14 - 5)
x < 9: (-3)
x < -3
=> x = { -4, -5, -6, ...}
Step-by-step explanation:
Reviews of call center representatives over the last three years showed that 10% of all call center reps were rated as outstanding, 75% were rated as excellent/good, 10% percent were rated as satisfactory, and 5% were considered unsatisfactory. For a sample of 20 reps selected at random, the probability that two or less will be rated as outstanding is 0.9298.
A. True
B. False
Find the probability of drawing a
non-face card or a black card
Answer:
50% black card ( or 26)
76% no face ( or 40)
What is the result when 3x+25 is subtracted from 35x-410
Answer:
32x-435
Step-by-step explanation:
(35x-410) - (3x+25)
35x-3x=32x
-410-25=-435
Someone solve for x pls
Answer:
Possibly wrong but 13.66?
Answer:
√8
Step-by-step explanation:
a^2 + b^2 = 4^2
a^2 + b^2 = 16
a^2 = b^2
a^2 = 8
a & b = √8
Brainilist Maybe?
HELPPP!! Find the missing angles in the following RHOMBUS. *
please enter: 1: _____, 3: _____, 4: ________
Answer:
3= 32 4=90 1=58
Step-by-step explanation:
Answer:
<1=58°
<3=32°
<4=90°
Step-by-step explanation:
<1=58° (180-90-32)
<3=32° (Same a the angle across from it because it’s an isosceles triangle)
<4=90°
This Rhomus is definitely not drawn correctly, so the image is deceptive. For example, two 32° angles would not make an obtuse angle. You just have to ignore the picture and do the Math.
how to calculate area of trapezium
Answer:
A trapezium, also known as a trapezoid, is a quadrilateral in which a pair of sides are parallel, but the other pair of opposite sides are non-parallel. The area of a trapezium is computed with the following formula: ... Area=21×Sum of parallel sides×Distance between them.
Answer:
A=a+b/2h
a=base
b=base
h=height
I hope it's helpful!
2. Ronu's present age is "x “years and her sister Shaani's present age is twice
of Ronu's age. Write following as algebraic expression
a) Ronu's present age
b) Ronu's age after 2 years
c) Shaani's present age
d) Shaani's age after 2 years
What hould be added to 100 to get - 132
Answer:
x = -232
Step-by-step explanation:
Ronu's present age is "x “years and her sister Shaani's present age is twice of Ronu's age.
(a) Ronu's present age = x years
(b) Ronu's age after 2 years = (x+2) years
(c) Shaani's present age = 2x years
(d) Shaani's age after 2 years = (2x+2) years
Let x should be added to 100 to get -132.
x+100 = -132
x = -100-132
x = -232
Hence, -232 must be added to 100 to get -132.
Find a fraction that is equivalent to, but different from 7/13
Answer:
14/26
Step-by-step explanation:
the fraction is equivalent to 7/13 as 7/13 is the simplified fraction
Tell weather the angles are complementary or supplementary. The. Find the value of x. WITH EXPLANATION
the table shows a linear relationship between x and y. drag and drop the options provided into the correct boxes to complete the equation
A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the past 30 days, with a tolerable sampling error (E) of 0.03 and a confidence level of 95%. If prior secondary data indicated that 25% of all adults had used the Internet for such a purpose, what is the required sample size for the new study
Answer:
The required sample size for the new study is 801.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
25% of all adults had used the Internet for such a purpose
This means that [tex]\pi = 0.25[/tex]
95% confidence level
So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].
What is the required sample size for the new study?
This is n for which M = 0.03. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.03 = 1.96\sqrt{\frac{0.25*0.75)}{n}}[/tex]
[tex]0.03\sqrt{n} = 1.96\sqrt{0.25*0.75}[/tex]
[tex]\sqrt{n} = \frac{1.96\sqrt{0.25*0.75}}{0.03}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96\sqrt{0.25*0.75}}{0.03})^2[/tex]
[tex]n = 800.3[/tex]
Rounding up:
The required sample size for the new study is 801.
Find the radius of a circle with a circumference of 23.55 feet. Use 3.14 for
Answer:
3.75
Step-by-step explanation:
The radius of the circle will be (11.775/π).
What is the area of a circle? What is an exponential function? Differentiate between equation and expression? area of circle : The area of a circle is equivalent to -[A] = πr² = πd²/4
function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.equation : A mathematical equation is used to equate two expressions.Given is the circumferance of the circle is 23.55 feet.
We can write -
2πr = 23.55
r = (23.55/2π)
So, the area of the circle will be -
{A} = πr²
{A} = π x (23.55 x 23.55)/4π²
{A} = (555/4π)
{A} = 138.75/π
r = (23.55/2π)
r = (11.775/π)
Therefore, the radius of the circle will be (11.775/π).
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Tickets for a raffle cost $ 9. There were 788 tickets sold. One ticket will be randomly selected as the winner, and that person wins $ 1700 and also the person is given back the cost of the ticket. For someone who buys a ticket, what is the Expected Value (the mean of the distribution)? If the Expected Value is negative, be sure to include the "-" sign with the answer. Express the answer rounded to two decimal places.
Answer:
24 because you have to subtract
Page 1
1. Find the common denominator for the
pairs of fractions given.
3/5 and 2/15
Answer: The common denominator is 15
answer only if you know it ty.
Answer:
[tex]\Huge\boxed{x<3}[/tex]
Step-by-step explanation:
-9.5x-1.5>-30
Hello There!
So once again we want to isolate the variable using inverse operations
To get rid of the 1.5 we add 1.5 to each side
-1.5+1.5 cancels out
-30+1.5=-28.5
now we have
-9.5x>-28.5
to get rid of the -9.5 we divide each side by -9.5
-9.5x/-9.5=x
-28.5/-9.5=3
Remember we are dividing by a negative number so we have to flip the inequality sign
We're left with
x<3
Answer:
Solution bayan imnot aure
help plase im sorry please
Answer:
f(x) = 417(3.15) x the second option which is the only one with correct units from the question
Answer:
second one
Step-by-step explanation:
please help me!! thank youu!!!
Answer:
24
Step-by-step explanation:
Area of a triangle
A = 1/2 bh
b=12
h=4
A= 1/2 * 12 * 4
A = 24
Michelle has four credit cards with the balances and interest rates listed below. She would like to consolidate all of her credit cards masingle credit card with an interest rate of 16% and pay off the balance in 36 months. If she did so, what would Michelle's monthly credit card payment be? Credit Card APR $4380 $1,385 a. $36735 b $464.95 $685.23
Answer:
$194.0008
Step-by-step explanation:
I'm not sure if this is correct but I hope it helps
16% of 4380
0,16×4380
=$700.8
16% of 1385
0,16×221.6
=221.6
16% of 36735
0,16×36735
=$5877.6
16% of 464.95
0,16×464.95
=$74.392
16% of 685.23
0,16×685.23
=$109. 6368
700.8+221.6+3877.6+5877.6+74.392+109.6368=$6984.0288
6984.0288÷36=$194.0008
the monthly payment for Michelle's consolidated credit card balance would be approximately $201.59.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Now, the total balance of all four credit cards:
Total balance = $4380 + $1385
Total balance = $5765
Hence, Determine the interest rate for the consolidated credit card: Interest rate = 16%
And, the term of the loan:
Term = 36 months
Hence, Use a loan calculator to calculate the monthly payment, using the total balance, interest rate, and term:
Monthly payment = $201.59
So, the monthly payment for Michelle's consolidated credit card balance would be approximately $201.59.
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The width of a rectangular table is 2.3 feet less than its length. If the area of the table is 9.5 square feet, find its dimensions.
Answer: Width = 12 feet
length = 9 feet
The dimensions of the rectangular table are approximately 5.77 feet by 3.47 feet.
Let's denote the length of the rectangular table as L.
According to the given information, the width is 2.3 feet less than the length. Therefore, the width can be expressed as L - 2.3.
The area of a rectangle is calculated by multiplying its length by its width. In this case, the area is given as 9.5 square feet.
So, we have the equation:
Length * Width = Area
L * (L - 2.3) = 9.5
Expanding the equation:
L² - 2.3L = 9.5
Rearranging the equation:
L² - 2.3L - 9.5 = 0
To solve this quadratic equation, we can use the quadratic formula:
L = (-b ± √(b² - 4ac)) / (2a)
For this equation, a = 1, b = -2.3, and c = -9.5.
Substituting the values into the quadratic formula, we get:
L = (-(-2.3) ± √((-2.3)² - 4 * 1 * (-9.5))) / (2 * 1)
L = (2.3 ± √(5.29 + 38)) / 2
L = (2.3 ± √43.29) / 2
Calculating the square root and simplifying further, we find two possible values for L:
L ≈ 5.77 or L ≈ -3.07
Since length cannot be negative, we discard the negative solution.
Therefore, the length of the rectangular table is approximately 5.77 feet.
To find the width, we substitute this value back into the equation for the width:
Width = Length - 2.3
Width ≈ 5.77 - 2.3
Width ≈ 3.47 feet
So, the dimensions of the rectangular table are approximately 5.77 feet by 3.47 feet.
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The line plot shows the distances in miles, run by joggers in a park.
Х
X
Х
Х
Х
Х
Х
Х
Х
X
0
1
2
3
4
5
6
7
8
9
How many runners ran at least 3 miles?
Enter your answer in the box
runners
Answer:
but i think is 2x
Step-by-step explanation:
hecause 2x
4x divided by 2x=2x
If <2 = 75 degrees and <3 = 30 degrees, find <3 and <4.
Answer:
angle 3 is 30 and 4 is 150 because total angle is 180 between 3 and 4
Mark thinks the equation y= 4^x will match the solid
graph. Mia thinks it will match the dotted graph.
Who is correct?
Mark
Mia
Both
Neither
Explain your thinking
Answer:
Mark
Step-by-step explanation:
because when x = 0; y = 1
x=1; y=4
and those points are on the solid line graph.
The thought of Mark is correct.
What are Exponential Functions?Exponential functions are functions where the independent variable, x is in the exponent.
Given a graph.
It has a solid line and a dotted line.
The given equation is, y = 4ˣ.
In order to find which graph shows the equation, find the points that the graph of the equation will pass through.
When x = 0, y = 4⁰ = 1
Solid graph passes through (0, 1).
Hence Mark is correct.
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Mr Ross told his class that the class pet hamster is 1/3 foot long. How long is the pet hamster in inches? (1 ft = 12in)
Finish solving blanks to answer the original question:
1/3 ft = 1/3 x 1ft
= 1/3 x 12 in
= _ in
The hamster is _ inches long
Answer:
4 inches
Step-by-step explanation:
Answer:
4 inches
Step-by-step explanation:
If 1ft= 12 inches
then 1/3ft= ?
cross multiply
12*1/3= 4
=4 inches
What 6 x 9 x 11 x 66 x 100 =?
Answer:
3920400
Step-by-step explanation: