Answer:
m > - 6
Step-by-step explanation:
Given
5 - 3m < 23 ( subtract 5 from both sides )
- 3m < 18
Divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity.
m > - 6
HELP WILL GIVE BRAINLIEST
Which is the equation of an ellipse with directrices at y = ±2 and foci at (0, 1) and (0, −1)?
(possible answers shown in image)
Answer:
[tex]\frac{x^{2} }{1} +\frac{y^{2} }{2}=1[/tex]
Step-by-step explanation:
The directrices of an ellipse are defined by
[tex]x=(+-)\frac{a}{e}[/tex]
Where [tex]a >b[/tex], and [tex]e[/tex] is the eccentricity defined by [tex]e=\frac{c}{a}[/tex]
So, in the first choice, we have the equation
[tex]\frac{x^{2} }{4}+\frac{y^{2} }{1} =1[/tex]
Where [tex]a^{2}=4[/tex] and [tex]b^{2}=1[/tex], which means [tex]a=2[/tex] and [tex]b=1[/tex].
In an ellipse, we have the relation
[tex]c^{2}=a^{2}-b^{2}[/tex]
Replacing values, we have
[tex]c^{2} =4-1=3\\c=\sqrt{3}[/tex]
So, the eccentricity is [tex]e=\frac{\sqrt{3} }{2}[/tex] and the directrices are [tex]x=(+-)\frac{2}{\sqrt{3} }[/tex], which means the first choice is not the right answer. In other words, the right answer is the second choice, because third and fourth choices don't represent an ellipse, both fractions must be positive in that case.
Therefore, the right answer is
[tex]\frac{x^{2} }{1} +\frac{y^{2} }{2}=1[/tex]
Answer:
OPTION B IS CORRECT
Step-by-step explanation:
FOR A VERTICAL ELLIPSE a IS ALWAYS LARGER THAN b AND a is always right under y-squared in the equation.
(2y+3)( 3y² +4y+5)
What’s the product?
Answer:
6y3+17y2+22y+15
Step-by-step explanation:
Answer:
6y³ + 17y² + 22y + 15
Step-by-step explanation:
(2y+3) ( 3y² +4y+5)
Keep the 'FOIL' method (first, outside, inside, last) when distributing and you'll end up with
(2y)(3y² ) + (2y)(4y) +(2y)(5 ) +(3)(3y2) + (3)(4y) + (3)(5)
Now, multiply each set to get
6y³+8y²+10y+9y²+12y+15
From there, just simplify/combine like terms (8y² + 9y² and 10y + 12y) to get your final answer: 6y³ + 17y² + 22y + 15
A cylinder shaped jar has a radius of 2 cm and a height of 6cm. What’s the volume of the jar? Use 3.14 for pi and round to the nearest hundredth.
In the picture, is the formula.
Options are
A) 301.44 cubic cm
B) 125.93 cubic cm
C) 75.36 cubic cm
D) 67.89 cubic cm
Answer:
It is C 75.36. I hope it helps.
Step-by-step explanation:
Dallas wants to know what elective subjects the students at his school like best. He surveys students
who are leaving band dass. Is this a random or biased sample, and why?
It is a (select) sample because
(select)
Answer:
It is a biased because he only asked the people who left band class. He wanted the people of band class to represent his entire school's opinion. Besides, the students of that class are limited number. If he randomly asked the question, the people chosen would be of any gender, class, etc. and its all random.
Which points on the graph represent values that could
be in the table? Choose all that apply.
A
B
C
D
Answer:
D and B
Step-by-step explanation:
what is 4^4 . 4^6 please help
Answer:
4^4 x 6^6= 11943936
Step-by-step explanation:
hope this helps
You invest $200 in a savings account. The account pays 3% interest compounded monthly. How
much money is in the account after 8 years?
Final answer:
To find out how much money will be in the account after 8 years with $200 initial investment and a 3% interest compounded monthly, use the compound interest formula A = P(1 + r/n)^(nt). The calculation results in approximately $256.67 in the account after 8 years.
Explanation:
To calculate how much money will be in the savings account after 8 years with an initial investment of $200 and a 3% interest rate compounded monthly, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A is the amount of money accumulated after n years, including interest.P is the principal amount (the initial amount of money).r is the annual interest rate (decimal).n is the number of times that interest is compounded per year.t is the time the money is invested for, in years.In this case, P = $200, r = 0.03, n = 12 (since interest is compounded monthly), and t = 8.
The formula becomes:
A = 200(1 + 0.03/12)^(12*8)
Calculating this we get:
A = 200(1 + 0.0025)^(96)
A = 200(1.0025)^96
A = 200(1.283362)
A ≈ $256.67
After 8 years, the savings account will have approximately $256.67.
Which phrase is represented by 3(8-n)+2
Answer:
Two more (+2) than three times (3) the difference between eight and a number (8-n)
Step-by-step explanation:
hope this helps
find the greatest common factor 18 and 36
Answer:
18 would be the GCF.
Step-by-step explanation:
18 | 36
6 | 18
36/2 = 18.
A dart hits the board. What is the probability
that it will hit in Region II, as a decimal to the
nearest tenth?
Answer: The probability is 0.5
Step-by-step explanation:
The probability will be equal to the quotient between the area of region II, and the total area of the board (supposing that the probability of hitting in any place is equal)
The total area of the figure is equal to
Area = (15' + 35')*(8' + 20') = 50'*28' = 1400 in^2
Now, the area of region II is:
Region II = 20'*35' = 700
Then the probability is:
P = 700/1400 = 1/2 = 0.5
identify a, b and c in the equation 2x^2 - 5x + 3 = 0
Answer:
a = 2, b = -5, c = 3
Step-by-step explanation:
The standard form of the quadratic equation is a*x^2 + bx + c = 0
Looking at the equation you have, we should correspond the coefficients with the standard form I wrote above.
so. a = 2, b = -5, c = 3
A square pyramid has a height of 25 ft and each side of the base has a length of 15 ft.
If a model of the square pyramid is scaled down by a factor of , what is the surface area of the model?
To determine the surface area of a model pyramid that has been scaled down, we must first compute the area of the original pyramid, and then multiply that area by the square of the scale factor.
Explanation:To find the surface area of a square pyramid we first calculate the area of the base which is side squared (152 = 225 sq ft), and then calculate the area of the four triangular faces. For the latter we can use the formula 0.5 x base x height, where base is the side of the pyramid (15 ft) and height is the slant height. The slant height can be calculated using Pythagoras' theorem which constitutes of half of the base and the height of the pyramid, this will give us the slant height, which then can be used in the surface area formula.
Next, if the pyramid is scaled down by a factor of 0.5, both lengths and areas are reduced by that factor. Hence, multiply the original area by 0.52 = 0.25 to find the surface area of the model pyramid.
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Nala is designing a piece of jewelry made of wire that has the shape shown below. It consists of two sides of a square and three-quarters of a circle. To the nearest tenth, what is the length of wire needed? Note that no wire is needed along the dashed line segment. (the curved part is three fourths the circumference)
(1) 14.1
(2) 18.4
(3) 20.1
(4) 24.8
Answer:
Option (3) is the answer.
Step-by-step explanation:
Given question is incomplete; find the complete question in the attachment.
Jewelry made by Nala is a composite figure having three fourth of a circle and two sides of a square.
Perimeter of the whole figure will give us the length of wire needed to design the jewelry.
Perimeter of three fourth of a circle P(circle) = [tex]\frac{3}{4}(2\pi r)[/tex]
Here, r = radius
P(circle) = [tex]\frac{3\pi (3)}{2}[/tex]
= 14.14 cm
Perimeter of the complete (composite) figure = 14.14 + 3 + 3
= 20.13
≈ 20.1 cm
Therefore, Option (3) is the answer.
Please answer 1,2,3, and 4
Answer:
1: "An equilateral triangle is never an obtuse triangle" & "An equilateral triangle is never an isosceles triangle."
2: Acute Isosceles Triangle
3: False! Option B.
4: D
Step-by-step explanation:
2: Isosceles Triangles have two equal sides. An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles.
3: An equilateral triangle is a triangle in which all the sides and all the angles are equal.
4: In order for a triangle to be isosceles, it has to have two same sides. For a triangle to be equilateral, all sides and angles need to be the same. Refer to reasoning in Question 2 for next explanation.
Write 6.012 as a mixed number in simplest form
Answer:
6 and 3/250
Step-by-step explanation:
The whole number part is 6, obviously
Then you have the fraction part, which in decimal form is 0.012 which is 12 thousandths which is 12/1000.
Simplify by dividing both the num. and denom. by 4 and you get 3/250. ;p
Answer:
6 3/250
Step-by-step explanation:
answer needed quick
is it
supplementary
vertical
complementary
adjacent
Answer:
Vertical angles
Step-by-step explanation:
Answer: Vertical angles
Step-by-step explanation:
Pair of opposite angles made by two intersecting lines
Look at the three functions below. Which of the functions are equivalent? Two of them? None of them? All of them? Show/explain how you
know!
Function 1: x2-x-2
Function 2: (x + 1)(x - 2)
Function 3: (x -0.5)^2 - 2.25
Answer:
All of them
Step-by-step explanation:
x² - x - 2
(x + 1)(x - 2)
x² + x - 2x - 2
x² - x - 2
(x - 0.5)² - 2.25
x² - 2(x)(0.5) + 0.5² - 2.25
x² - x + 0.25 - 2.25
x² - x - 2
Need help with this What are the like terms in the equation 5x + 3y + 2x + 3z = 27? ASAP
Answer:
c
Step-by-step explanation:
the like terms are 5x and 2x
The like terms in the given equation are 5x and 2x. Therefore, option C is the correct answer.
What are like terms?Like terms are those terms whose variables and their exponent power are the same. The coefficient of these variables can be different. Algebraic-like terms are terms that are similar to each other.
The given equation is 5x+3y+2x+3z=27.
In the given equation like terms are 5x and 2x and unlike terms are 3y and 3z.
Therefore, option C is the correct answer.
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I need this ASAP please
Answer:
It's the first answer. Remember, equations like that are always y=mx+b. Y is whatever y value, m is the slope, x whatever the x value is. b is the y intercept (the y value when x equals 0). In this case, you can tell that 1/2 and 2 are the m, m is slope, so the first option should be correct.
Boden's account has a principal of $700 and a simple interest rate of 4.4%. Complete the number line. How much money will be in the account after 4 years, assuming Boden does not add or take out any money?
Answer:
$823.2
Step-by-step explanation:
Interest = 700 × 4.4/100 × 4
= 123.2
Balance = principle + interest
700 + 123.2
823.2
Answer:
A =823.20
Step-by-step explanation:
A = P (1 + rt)
Where A is the amount in the account
P is the principle, r is the rate and t is the time
A = 700(1+4.4% *4)
Change to decimal form
A = 700(1+.044 *4)
A = 700(1+.176)
A =823.20
There are 18 girls in a class. If this is 40% of the class list, then how many students are in the class list?
Final answer:
There are 45 students in the class.
Explanation:
If 18 girls represent 40% of a class, we can calculate the total number of students in the class using the concept of percentages. To find the total number of students, we set up a proportion, which is an equation that says two ratios are equivalent.
We know that 18 girls are to 40% what the total number of students is to 100%, since 100% would be the whole class.
We can express this relationship with the equation:
18 (number of girls) / (total number of students) = 40% / 100%
Using cross-multiplication, we can find the total number of students:
18 / x = 40 / 100
x = (18 * 100) / 40
x = 1800 / 40
x = 45
So, there are 45 students in the class list.
for the Equtionb 1.75n=7,what is the value of n?
To solve the equation 1.75n = 7, divide both sides by 1.75 to isolate n, which simplifies to n = 4. Therefore, the value of n is 4.
Explanation:To solve the equation 1.75n = 7 for the value of n, you need to isolate n. This can be accomplished by dividing both sides of the equation by 1.75, the coefficient of n.
Here are the steps:
Divide both sides of the equation by 1.75:1.75n / 1.75 = 7 / 1.75Simplify both sides:n = 4The result is n = 4. Therefore, the value of n that satisfies the equation is 4.A data scientist tried to many cups of coffee she drink every day at work over the course of the year. She used the data to build a probability distribution where the random variable C represents the number of cups of coffee she drank on a given day. Find the missing probability for someone who has two or more cups of coffee.
To find the missing probability for consuming two or more cups of coffee in the data scientist's distribution, subtract the sum of the probabilities of all other events from 1, ensuring that all probabilities in the distribution meet the criteria of summing to 1 and each being between 0 and 1.
Explanation:The question pertains to constructing a probability distribution for a data scientist's daily coffee consumption at work. The random variable C stands for the number of cups of coffee she drinks on a given day. To calculate the missing probability for someone who has two or more cups of coffee, one must know the individual probabilities of all other events (0, 1, 2, etc., cups of coffee). The sum of all these probabilities must equal 1, since that represents the certain event that some outcome in the distribution will occur. To find the missing probability, one would subtract the sum of the probabilities for 0 and 1 cups (if those are the only other events) from 1.
For example, if the probability of drinking 0 cups is 0.1 and the probability of 1 cup is 0.3, then the probability of drinking two or more cups would be 1 - (0.1 + 0.3) = 0.6. Important characteristics of a discrete probability distribution include that the sum of probabilities is 1 and that each individual probability is between 0 and 1, inclusive.
Julio is drawing tiles from a bag of tiles like the one shown below.
*picture is provided*
He draws a tile, replaces it, and draws another tile. What is the probability he will draw a yellow tile on both draws?
A. 1/25
B. 1/35
C. 2/21
D. 16/225
Answer:
[tex]\frac{1}{25}[/tex]
Step-by-step explanation:
if the picture shows 4 blue, 3 green, 5 red, and 3 yellow tiles, then the total amount of tiles is 15. Divide the number of yellow tiles by the total tiles. Remember the tile is replaced, so there will be the same 15 tiles in the bag with the same probability.
[tex]\frac{3}{15} *\frac{3}{15} = \frac{9}{225}=\frac{1}{25}[/tex]
Plzzzzz helppp me plzzz
Answer:
X=-2
Step-by-step explanation:
You start with adding 7 to the side with -9 to get the (x) alone. Then you have x=-2.
Answer:
x = -2
Adding two negative numbers is easy: you're just adding two "negative" arrows, so it's just like "regular" addition, but in the opposite direction. For instance, 4 + 6 = 10, and –4 – 6 = –4 + (–6) = –10.
Which shows 15% as a fraction in simplest form?
Answer:
15/100= 3/20
Step-by-step explanation:
At the bookstore, Tim bought a magazine for $4, and five
books that all cost the same amount. He spent a total of
$129. Which equation expresses how much each book
cost?
A.x= 129-4
B.5x - 4 = 129
C.5x + 4 = 129
D.4x + 5 = 129
The correct equation that expresses how much each book cost is C.5x + 4 = 129, where x represents the price of one book.
Explanation:The student asked which equation expresses how much each book cost if Tim bought a magazine for $4 and five books that all cost the same amount, spending a total of $129. The correct equation would account for the magazine's cost and the total cost of the five books. The equation that represents this scenario is C.5x + 4 = 129, where x represents the cost of one book, 5x represents the total cost of the five books, and 4 is the cost of the magazine. To find the cost of each book, you need to subtract the magazine's cost from the total and then divide by the number of books. The equation 5x + 4 = 129 does this correctly because when we subtract 4 (the cost of the magazine) from 129 (total amount spent), and then divide that result by 5, we find the cost of a single book.
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Maria wants to buy a new bicycle that costs $129.89. She has saved $78 of her babysitting money. Maria’s grandfather gave her $25 for her birthday. She finds $13.73 in her piggy bank. She expects to make another $12 for babysitting this weekend. Approximately, how much money will Maria have after she babysits this weekend?
Answer:
$128.73
Step-by-step explanation:
78 + 25 + 13.73 + 12= 128.73
If 240 students are surveyed, how many students will not prefer math or language arts?
A.48 students
B.80 students
C.96 students
D.120 students
Factor 12m-15m ^2.
Please help!
Answer:
3m(4-5m)
Step-by-step explanation:
1) m is common in both terms so lets take it out:
m(12-15m)
since 12 and 15 are both divisible by 3 lets take 3 out:
3m(4-5m)
Hope this helps!
The factor of the expression 12m - 15m² is 3(4 - 5m).
What is factorization?Factorization in mathematics is the process of dividing a large number into smaller ones that, when multiplied together, give you the original number. Factorization is the process of dividing a number into its components or divisors.
Given:
An expression, 12m - 15m².
To factor the expression:
Using factorization method.
12m - 15m²,
= 3(4 - 5m)
Therefore, the factor is 3(4 - 5m).
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