Answer:
c e
Step-by-step explanation:
Which is the parametric form of the polar equation r=-4 theta?
A. x=-4 cos theta, y=-4 sin theta
B. x=-4 theta cos theta, y=-4 theta sin theta
C. x=-theta cos theta, y=-theta cos theta
Answer: Option B.
Step-by-step explanation:
we have that r = 4*θ
(you writted a negative equation, but we can never have a negative radius)
We also have that:
r = √(x^2 + y^2) = 4*θ
We can use the relationship cos(x)^2 + sin(x)^2 = 1
and write X = A*cos(θ) and Y = A*sin(θ)
and now we have:
r = √( (A*cos(θ))^2 + (A*sin(θ))^2) = √(A)^2 = 4*θ
So the correct option is:
x = 4*θ*cos(θ) or -4*θ*cos(θ)
y = 4*θ*sin(θ) or -4*θ*cos(θ)
(We can have the positive or negative options because we are squaring the term, so the sign does not matter)
The correct option then is B
Answer:
C) x = -4θcosθ and y = -4θsinθ
Step-by-step explanation:
Other person was wrong.
Does the equation below represent a
direct proportion? If yes, identify
the constant of proportionality.
3x + 4 =y
A. No
B. Yes, 4
C. Yes, 3
D. Yes, x
Answer:
Step-by-step explanation:
yes,4
Step-by-step explanation:
3x+4=y why is it no? Because if it has addition or subtraction in the equation then it does not have a constant of proportionality. If it is multiplication or division then it has a constant of proportionality.
Hope it helps!On a quiz there are four multiple-choice questions worth 3 points each and two true/false questions
worth 1 point each. Each multiple-choice question has five possible choices. If a student randomly
guesses on each question, what is the expected value of the student's score on the test?
2.8
5.4
3.4
1.8
Can anyone help me ples?
Answer:
3.4
Step-by-step explanation:
Answer:
3.4
Step-by-step explanation:
Since we have given that
Number of multiple choice question = 4
Number of true false questions = 2
Number of points for each multiple choice question = 3
Number of points for each true false question = 1
Number of choices in multiple choice = 5
Probability of getting correct answer in multiple choice question = 1/5
Probability of getting correct answer in true false question = 1/2
answer would be 17/5 which is equal to 3.4
Does the following equation represent growth or decay?
y=12841(1.01)x
decay
growth
Answer:
Growth
Step-by-step explanation:
The number that is multiplying (1.01) is more than 0 so growth
Themba has 6.75 cups of yogurt and needs to make 5 bowls of fruit dip. Each bowl
uses 1.5 cups of yogurt. Complete the statement about the fruit dip.
Themba needs a total of____
cups of yogurt to make 5 bowls of fruit dip, so ___
cup(s) will be____
Answer:7.5 cups of yogurt to make 5 bowls of fruit dip.
Step-by-step explanation:
Answer:
Themba needs a total of_7.5___
cups of yogurt to make 5 bowls of fruit dip, so _0.75__
cup(s) will be__needed__
Step-by-step explanation:
Dan learned the mass of an electron is about 9.1×10⁻³¹ while the mass of a proton is about 1.7×10⁻²⁷. He thinks electrons have a greater mass than protons because 9.1 is greater than 1.7; Do you agree with him? How can you use scientific notation to compare the mass of an electron and a proton? Explain your thinking.
Answer:so I will try.
Step-by-step explanation:but it might take a will
plssss helpppp because this is kinda hard for me
Answer:
the answer is NO! The cost of parking is not proportional.
Step-by-step explanation:
heres why! the points lie on the same line. thus there is no change in the values, so the cost stays the same!
Which group of numbers is in order from smallest to largest? 0.34, 45%, , 0.8, 75% 27%, , 0.09 0.24, 37%,
Answer:
0.09 0.24 27% 0.34 37% 45% 75% 0.8
Answer:
0.34, 45%, , 0.8
Step-by-step explanation:
hope this helps!
~mina
MAXIMUM POINTS!!!! - Will give brainliest to best answer
Answer:
Parallel
Step-by-step explanation:
AB is parallel to CD.
The supplementary angle to 97 is 83, so the lower right angle is 83 degrees.
We see that the upper left angle is 83 degrees and because these alternate interior angles are equal, the lines are parallel.
Answer:
AB is parallel to CD.
Step-by-step explanation:
The angle of inclination of AB and CD to the transversal are equal and of the same position.
The angle 97° of CD is corresponding to the same of AB
PLEASE HELP ! what is the grand total ?
Answer:
my answer is
5x^4-2
and i am not sure of the answer
answers for all of them
Answer:
no idea
Step-by-step explanation:
Answer:
p(4)=# of 4's/# of sides p(b)= # of B's\# of sections
What is the perimeter of this rectangle
Answer:
36 m
Step-by-step explanation:
15 + 15 + 3 + 3 = 36
Perimeter is the total length of the outside of the figure.
Answer: 36
Step-by-step explanation:
15+15+3+3=36
Find the surface area of the prism below. Show all of your work clearly.
Answer:
Area of Figure; 70 cubic feet
Step-by-step explanation:
See attachment below;
Which is true of a circle?
The radius of circle is sometimes longer than the diameter of a circle.
Each circle has only one diameter.
Any two points on the circumference of the circle are the same distance from the center of the circle.
Any two chords of a circle are the same length.
Answer:
Any two points on the circumference of the circle are the same distance from the center of the circle.
Step-by-step explanation:
Any two points on the circumference of the circle are the same distance from the center of the circle.
Will give brainliest!! I have limited time, please help!!
17.) The lateral area of a cone is 603 pi cm^2. The radius is 26 cm. Find the slant height to the nearest tenth.
(The other questions will be attached with a picture)
Answer:
I think the answer is 50cm
Answer:
the other guy was a moron. The answer was ~23.19. the formula as it turns out, was simple. It was 603pi/26pi. what a moron that guy, seriously. (I think this is the right formula, I got it off of a problem on Jiska but with similar numbers.
Step-by-step explanation:
https://www.jiskha.com/questions/1792321/the-lateral-area-of-a-cone-is-400-pi-cm-2-the-radius-is-10-cm-find-the-slant-height-to
Need help with this pls
(Show work pls)
Answer:
6 hours
Step-by-step explanation:
6.50 - 2.00 = 4.50
4.50 ÷ 0.75 = 6
Answer:6 hours
Step-by-step explanation:
6.50 - 2.00 = 4.50
4.50 ÷ 0.75 = 6
Hoped this helped!
How is the measure of an arc related to its central angle?
Answer:
Arc Measure: In a circle, the degree measure of an arc is equal to the measure of the central angle that intercepts the arc. Arc Length: In a circle, the length of an arc is a portion of the circumference. The letter "s" is used to represent arc length.
Step-by-step explanation:
Helppp plzz!! Will mark you as brainliest!! A bakery sells gourmet cake pops. Each pop is composed of a spherical ball of cake atop a paper lollipop stick. A jumbo cake pop has a diameter of 6 cm. What is the volume of cake in a spherical ball of cake baked for a jumbo cake pop?
A. 12cm3
B. 27cm3
C. 36cm3
D. 288cm3
Answer:
C
There you go
The volume of the spherical shaped jumbo cake pop is: 113.1 cm³
What is the Volume of a Sphere?Volume of sphere = 4/3 πr³, where r is half of the diameter of the sphere.
Given the following:
Diameter of the spherical ball of cake = 6 cm
Radius (r) = 1/2(6) = 3 cm.
Volume of spherical shaped cake = 4/3 π(3³)
Volume of spherical shaped cake = 113.1 cm³
Learn more about volume of sphere on:
https://brainly.com/question/22807400
HEY GUYS I NEED HELP WIT THIS PLZ HELP ME??!! 20 points!!
Math problem: If the dimensions of a triangle are two times bigger, how does the area of the triangle change? (Hint: Draw this)
Answer:
The equation for area of a triangle is height multiplied by the base length, divided by 2. So, if the height is 2, and the base is 4, then you multiply the two together, making 8, and then divide it by 2, making the final area 4. So if the dimensions are doubled, then the equation would be 4 times 8 divided by 2. Which is 16. If we do this again with 16 times 8, we will get 128, which when divided by two is 64. This is 4 times 16, just as 16 is 4 times the original answer 4. This means that every time you double the dimensions you will get the original answer multiplied by 4.
Step-by-step explanation:
Which relation describes the graph?
Answer:
A.
Step-by-step explanation:
idk how to explain it. all you need to do is look at the graph..... every point is (x,y). x is where it is horizontally and y is vertically
Give the coordinator of the point where each line crosses the y-axis y=1/2x
y=2-x
Step-by-step explanation:
To find the y-intercept, you need to set the x-value to 0.
Step 1: Find the y-int for the first equation
[tex]y = \frac{1}{2}x[/tex]
[tex]y = \frac{1}{2}(0)[/tex]
[tex]y = 0[/tex] ← y-int for first equation
Step 2: Find the y-int for the second equation
[tex]y = 2 - x[/tex]
[tex]y = 2 - (0)[/tex]
[tex]y = 2[/tex] ← y-int for second equation
A water pump takes 70 minutes to fill a tank. A larger pump can fill the same tank in 30 minutes.
How long will it take to fill the tank if both pumps are used?
A. 15 minutes
B. 21 minutes
C. 40 minutes
D. 50 minutes
Answer:
21 minutes Option B
Step-by-step explanation:
1 min
Small --> 1/70
Big --> 1/30
Together --> 1/70 + 1/30 = 3/210 + 7/210 = 10/210 = 1/21
1 divided by 1/21 = 21
Thus, it's 21 minutes (B)
Answer:
40 minutes
Step-by-step explanation:
70 minutes - 30 minutes
What is the answer in integer form?
Answer:
I believe it's $4
Step-by-step explanation:
If it's asking you for the integer in that scenario, the only integer there is $4.
An integer is any whole number, and 4 is a whole number, so I guess that's the answer.
(I hope this helps).
Will mark brainliest to first answer!!!
Answer:
The answer is D
Step-by-step explanation:
you just need to add the minutes to 6:00 a.m. and find where they become equal and that is 8:30 a.m.
Answer:
So the Answer would be c
Step-by-step explanation:
Ok so we know that if bus A takes a 75 minute route
and bus B takes a 15 minute route.
So now we have to add the two numbers
75+15= 1 hour and 30 minutes
add that to 6:00 and you got 7:30!
CAN SOMEONE PLEASE HELP ME WITH THESE 4 QUESTIONS!!! ITS IMPORTANT I WILL MARK YOU AS BRAINLIEST IF YOU GET THEM RIGHT! PLEAEEESEEE
Answer:
1) x=5
2)x=8
3)x=4
4)x=5/2
Step-by-step explanation:
2x=10
x=5
1/2x=4
x=8
x+3=7
x=4
-14x+14=-21
-14x=-35
14x=35
x=5/2
Answer:
The final answers:
1) [tex]x = 5[/tex]
2) [tex]x = 8[/tex]
3) [tex]x = 4[/tex]
4) [tex]x = \frac{5}{2}[/tex]
Step-by-step explanation:
-Calculations for every question:
1) [tex]2x - 4 = 6[/tex]
[tex]2x - 4 + 4 = 6 + 4[/tex]
[tex]2x = 10[/tex]
[tex]\frac{2x}{2} = \frac{10}{2}[/tex]
[tex]x = 5[/tex]
2) [tex]\frac{1}{2}x + 6 = 10[/tex]
[tex]\frac{1}{2}x + 6 - 6 = 10 - 6[/tex]
[tex]\frac{1}{2}x = 4[/tex]
[tex]x = 4 \times 2[/tex]
[tex]x = 8[/tex]
3) [tex]3x + 3 = 2x + 7[/tex]
[tex]3x + 3 - 2x =2x - 2x + 7[/tex]
[tex]x + 3 = 7[/tex]
[tex]x = 7 - 3[/tex]
[tex]x = 4[/tex]
4) [tex]-7x + 14 = 7x - 21[/tex]
[tex]-7x + 14 -7x = 7x - 7x - 21[/tex]
[tex]-14x + 14 = -21[/tex]
[tex]14x + 14 - 14 = -21 - 14[/tex]
[tex]-14x = -35[/tex]
[tex]\frac{-14x}{-14} = \frac{-35}{-14}[/tex]
[tex]x = \frac{5}{2}[/tex]
Please help! Will give brainliest, thanks and more points.
Look at the picture.
Answer:
142 sq cm
Step-by-step explanation:
You find the areas of each face, using area of a rectangle (length * width), to get: 7*3+7*3+7*5+7*5+3*5+3*5=21+21+35+35+15+15=142
Answer:
142 sq cm
Step-by-step explanation:
plz help me it's due today
Answer:
I can't see the half of the question before city
Step-by-step explanation:
Then i woul dbe able to help u
The length of the Earth’s equator is about 40,000 km, and the Earth’s diameter is 8/25 the length of the equator. What is the diameter of the Earth?
Answer:
See Below:
Step-by-step explanation:
40,000*8/25= the diameter, because the diameter is 8/25 of the equator which is 40000
Diameter= 40,000*8/25
Diameter= 12,800 km
Answer:
12,800 km
Step-by-step explanation:
Since the length of the Earth's equator is 40,000 km and the diameter is 8/25 the length of the equator, indicates that you would multiply 40,000 by 8/25, which gives you a product of 12,800, or, the diameter of the Earth which is 12,800 km.
NEED ASAP will mark brainliest
Answer: x = 12, y = [tex]12\sqrt{3}[/tex]
Step-by-step explanation:
A 30-60-90 triangle has sides whose lengths are related. (shown in the diagram attached) The longest side, the hypotenuse (opposite the right angle) represents 2x. The shortest side is x, and the last side is [tex]x\sqrt{3}[/tex].
We know the longest side = 24 = 2x.
If the shortest side is x, that means that the shortest side = the longest side DIVIDED by 2. Therefore, shortest side = x = 24/2 = 12 .
The last side is y and equals x\sqrt{3} . We now know that x = 12. Hence, y = [tex]12\sqrt{3}[/tex].
Autumn surveyed 500 of the students in her school about their favorite color. 25 students said their favorite color was red. What percentage of the surveyed students said their favorite color was red?
Answer:
.05%
Step-by-step explanation:
Answer:.05
Step-by-step explanation: