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Related Questions
At a movie, 80% of the audience members were teenagers. If the number of teenagers at the movie was 56, what was the total number of audience members?
PLS ILL GIVE BRAINLIST TO WHOEVER ANSWERS N YOU DONT HAVE TO DO AN EXPLANATION)
Answers
Answer:
ANSWER IS 70!
Step-by-step explanation:
Use the discriminant to describe the roots of each equation. Then select the best description.
2 = x2 + 5x
double root
real and rational root
real and irrational root
imaginary root
Answers
[tex]2 = {x}^{2} + 5x[/tex]
Arrange the expression into the standard form.[tex]0 = {x}^{2} + 5x - 2 \\ {x}^{2} + 5x - 2 = 0[/tex]
DiscriminantFrom the standard form equation and from the given equation.
[tex]a {x}^{2} + bx + c = 0 \\ a = 1 \: \: \: b = 5 \: \: \: c = - 2[/tex]
Discriminant Formula
[tex]D = {b}^{2} - 4ac[/tex]
Substitute the value of terms in the discriminant formula.
[tex]D = {(5)}^{2} - 4(1)( - 2) \\ D = 25 - 4( - 2) \\ D = 25 + 8 \\ D = 33[/tex]
Discriminant Types
[tex]D > 0 \: \: \: \: 2 \: \: real \: \: roots \\ D = 0 \: \: \: \: 1 \: \: real \: \: root \\ D < 0 \: \: \: imaginary \: \: roots[/tex]
We can rule out the Imaginary root and double root because the discriminant is greater than 0. Therefore, the only choices are either Irrational or Rational.
However, we cannot factor the expression by using two brackets or common factor. We can say that the equation has two real irrational roots.
Answerreal and irrational roota=1, b=5, c=-2
b2-4ac is the discriminant.
(5^2)-4(1)(-2)
25+8=33, so the discriminant is positive
This means there are two real rational roots, so the answer is the second option
Solve for v.
v-8.4= 6.62
Answers
Answer:
v-8.4=6.62 +8.4
v=15.02
Step-by-step explanation:
prove me wrong
quick ASAP 25 POINTS AND BRAINLIEST FOR BEST ANSWER
Multiplying Rational Expressions
Simplify each expression
(1/p-9)*(p^2+6p-27/p+9)
Answers
Answer:
-9p3 + 6p2 + 9p - 26/ p
Step-by-step explanation:
hope this helps
My sister need help!!!
Answers
Answer:
nice hand writing
Step-by-step explanation:
I WILL GIVE BRAINLESIT PLEASE I NEED HELP!!! 5a. When paying for a restaurant order, a customer spent $20.00 for a $17.00 meal. What percent was the tip? Round to the nearest tenth. 5b. When paying for a restaurant order, a customer's total for food was $30.00. What is a 18% tip for that total?
Answers
Answer:
5a. Tip was 17.65%
5b. Total was $35.4
Step-by-step explanation:
5a.
Create the following equation:
17 + 17x = 20
17x = 3
x = 3/17
5b.
Find 18% of 30.
30 x 0.18 = 5.4
Add 5.4 to 30.
30 + 5.4 = 35.4
Which equations support the fact that rational numbers are closed under addition?
Select each correct answer.
+0.5 = 1
3/16 +3/16 = 6/16
35+ 5 = 415
V10 + (-V10) = 0
Answers
Answer:
3/16+3/16=6/16
Step-by-step explanation:
HOPE ITS HELP YOU
A blueprint uses a scale factor of 3 in = 2 ft. What is the area on the blueprint of a 3,500 square foot house in inches?
Answers
Six out of the 12 members of the school choir are boys. In simplest form, what fraction of the choir is boys?
Answers
Answer:
1/2
Step-by-step explanation:
Given m||n, find the value of x
Answers
Answer:
The value of x is 117.
Step-by-step explanation:
[tex]180 \\ \frac{ - 63}{117} [/tex]
Please see the attachment. Thank you
Answers
pls help me!! thank you!!
Answers
Answer:
4
Step-by-step explanation:
Mario is planning a charity dinner. Each table costs $50 and each chair costs $7 to rent. The other costs of the dinner are $475. Let t represent the number of tables and let c represent the number of chairs. Write the expression to represent the situation and explain how you got your answer.
Answers
Answer:
Cost of Dinner = 50t + 7c + 475
Step-by-step explanation:
"t" represents tables and they cost $50 each, so the algebraic expression would be "50t" ($50 times the number of tables).
Same applies to chairs; "7c" ($7 times the number of chairs).
The $475 represents the other costs added to the total.
So the expression to represent this problem would be at the total cost of the charity dinner is 50t (50 dollars per table) plus 7c (7 dollars per chair) and $475 for other costs.
Question 14 options: x−93=28 Solve for x.
Answers
Answer:
x = 121
Step-by-step explanation:
In order to solve for "x" you need to get it on one side by itself. To do that you need to add 93 to the other side. 93 + 28 is 121.
Answer:
121
Step-by-step explanation:
x-93=28
x=28+93
x=121
Please help I’m so close to passing math
Answers
Answer:
It would cost $21.84
Step-by-step explanation:
Becasue you first figure out how much one book mark cost and one costs 0.78. Then you just multiply 0.78 by 28(total amount of classmates.) Hope that helps:)
7.(06.04)
5x + 1/2 y^2
What is the value of the expression above when x = 3 and y = 2? You must show all work and calculations to receive full credit. (4 points)
Answers
Answer:
17Step-by-step explanation:
Given expression:
5x + 1/2y²Value of expression when x = 3 and y = 2:
5*3 + 1/2*2² =15 + 2 =17Answer:
5x + 1/2 y² when x = 3 and y = 2
[tex]→\boxed{5x + \frac{1}{2} {y}^{2} } = 5(3) + \frac{1}{2} {(2)}^{2} \\ = 5(3) + \frac{1}{2} (4) \\ = (15 + 2) \\ = \boxed{ 17}✓[/tex]
17 is the right answer.First, find the area of each rectangle. 3×5 1/6
Answers
Answer:
31/2
Step-by-step explanation:
hope this helps!
Please I really need help!!
(Solve using tape diagrams)
Serena's mom is planning her birthday party. She bought balloons, plates, and cups. Serena's mom bought twice as many plates as cups. The number of balloons Serena's mom
bought was half the number of cups. If Serena's mom bought 84 items, how many of each item did she buy?
Answers
Answer:
look at the picture
Step-by-step explanation:
the picture explains everything
irrational numbers are closed under subtraction true/false
Answers
Answer:
False
Step-by-step explanation:
a+(-a)=a-a = 0 which means irrational numbers are not closed under addition or subtraction.
False. Irrational numbers are not closed under subtraction.
Given data:
Closure under subtraction means that if you subtract two irrational numbers, the result will always be another irrational number.
However, this is not true for irrational numbers.
For example, consider the irrational numbers √2 and √2 + √2. Both of these numbers are irrational. However, when we subtract √2 from √2 + √2, we get:
(√2 + √2) - √2 = √2
The result, √2, is still an irrational number. But if we subtract two irrational numbers like √2 from √2, we get:
√2 - √2 = 0
The result, 0, is a rational number, not an irrational number.
To learn more about irrational numbers, refer:
https://brainly.com/question/4031928
#SPJ6
please i need help what is 2/3 + 1/6
Answers
Answer: 5/6
Step-by-step explanation:
(2/3×2/2)+(1/6×1/1)=?
4/6+1/6=5/5
what is the lowest common multiple of 1/2and 1/4
Answers
Answer:
1/2
Step-by-step explanation:
A swimming pool has a leak and is losing 23.5 gallons of water every 5 days. What is the average change in water volume each day?
Answers
Step-by-step explanation:
If you divide the distance by the elapsed time, the result will be the rate of water loss (evaporation). To convert this evaporation rate in to gallons lost over a specific time period, you will need convert the measure into a volume. WTG GLAD U GOT IT RIGHT..
A railroad car container can hold 66,000 pounds. Mr. Evans wants to ship 80 ovens and some freezers in the same container. If each freezer weighs 600 pounds, how many freezers could be shipped in the container. Each oven
weighs
300 pounds
Answers
Answer:
70 freezersStep-by-step explanation:
Each oven weights 300 pounds and there 80 ovens:
80*300 = 24000 poundsWeight left for freezers:
66000 - 24000 = 42000 poundsNumber of freezers could be added:
42000/600 = 70reflect point a (1,1) over y axis
Answers
Answer:
reflected across the y axis, the point (1, 1) becomes (-1, 1).
Step-by-step explanation:
To reflect a point across the y-axis, all you need to do is negate the x coordinate. That gives you (-1, 1)
Can someone help me?
Answers
Answer:
QR is 1.2 due to both triangle are similar
Answer:
the answer should be 0.96 units
Step-by-step explanation:
1.6/2.0=.8
.8x1.2= .96
A closed box has a square base with side length feet and height feet. Given that the volume of the box is cubic feet, express the surface area of the box in terms of only.
Answers
Complete Question:
A closed box has a square base with side length L feet and height h feet. Given that the volume of the box is 39 cubic feet, express the surface area of the box in terms of L only.
Answer:
[tex]A = \frac{156}{L} + 2L^2[/tex]
Step-by-step explanation:
Given
[tex]Volume = 39ft^3[/tex]
Required
Express the surface area in terms of L
Because the box has a square base:
The volume is:
[tex]Volume = Base\ Area * Height[/tex]
Where
[tex]Base\ Area = L * L[/tex]
So, we have:
[tex]Volume = L * L * H[/tex]
Substitute 39 for Volume
[tex]39= L * L * H[/tex]
[tex]39= L^2 * H[/tex]
Make H the subject
[tex]H = \frac{39}{L^2}[/tex]
The surface area (A) of a box with square base is:
[tex]A = 2(LH + LH + L^2)[/tex]
[tex]A = 2(2LH + L^2)[/tex]
Open bracket
[tex]A = 4LH + 2L^2[/tex]
Substitute [tex]\frac{39}{L^2}[/tex] for H
[tex]A = 4L * \frac{39}{L^2} + 2L^2[/tex]
[tex]A = \frac{4L *39}{L^2} + 2L^2[/tex]
[tex]A = \frac{4*39}{L} + 2L^2[/tex]
[tex]A = \frac{156}{L} + 2L^2[/tex]
"" Find a vector equation and parametric equations for the line. (Use the parameter t.) The line through the point (0, 11, −9) and parallel to the line x = −1 + 3t, y = 6 − 3t, z = 3 + 7t
Answers
Find the tangent vector T to the given line (t) = 〈 x(t), y(t), z(t) 〉, with parametric equations,
x(t) = -1 + 3t
y(t) = 6 - 3t
z(t) = 3 + 7t
by differentiating (t) component-wise:
T = '(t) = 〈 dx(t)/dt, dy(t)/dt, dz(t)/dt 〉
T = 〈3, -3, 7〉
Scale T by any real number t to get the line through the origin (when t = 0) and the point (3, -3, 7) (when t = 1), which of course runs parallel to '(t). This gives the vector tT. Translate this by any vector v = 〈a, b, c〉 to force this line to pass through the point (a, b, c) instead of the origin, while still remaining parallel. You want the new line to pass through (0, 11, -9), so take v = 〈0, 11, -9〉.
Then the vector equation of the new line is
tT + v = t 〈3, -3, 7〉 + 〈0, 11, -9〉 = 〈3t, 11 - 3t, -9 + 7t〉
with parametric equations
x(t) = 3t
y(t) = 11 - 3t
z(t) = -9 + 7t
Identify the property demonstrated.
4(3+5) = 4.3 +4.5
-associative property of
multiplication
-commutative property of multiplication
-distributive property
-identity property of multiplication
Answers
Answer:
Distributive property
Step-by-step explanation:
Jane has 12 deck chairs and she has painted 1/4 of them yellow. How many are unpainted?
Answers
answer is 9
Step-by-step explanation:
12/4=3
1/4=3
3/4=9
Explanation: 12 chairs divided by 1/4 of the painted chairs equals 3 unpainted chairs.
Hopefully this helps
What does 8/y + 6 have in common with 8^y + 5?
A. they have the same value
B. both are binomial
C. both are trinomials
D. neither is a polynomial
Answers
Answer:
Answer is d because no is a polynomial