A company designs microphones for use in conference rooms. A new microphone needs to focus on the person speaking and not the voices of other people in the room. Which polar equation would best match the desired audible range of the microphone?
r = 3
r = 3cos(2θ)
r = 3cos(3θ)
r = 3 + 3cos(θ)
Answer: D
Step-by-step explanation:
big trust
2022
Answer:
D on edge
Step-by-step explanation:
I need help with my homework please, I don’t understand
Answer:
The answer is A
Step-by-step explanation:
-
Nikki just graduated from high school and would like to buy a car. If she received $3000 in graduation gifts from family friends. She will put this money into a 18 month certificate of deposit until she finds the car of her dreams. The CD earned 10% annually and simple interest. How much will she put towards the down payment and 18 months 1.5 years?
Answer:
$3450
Step-by-step explanation:
Here, P = $3000, N = 1.5 years, R = 10%
[tex]SI = \frac{PNR}{100} \\ \\ SI = \frac{3000 \times 1.5 \times 10}{100} \\ \\ SI = 450 \\ \\ [/tex]
Amount of down payment
= $3000 + $450
= $3450
what is the solution to the system of equations
2x-y=7
y=2x+3
a. (2,3)
b.(2,7)
c. no solution
d. infinite number of solutions
Answer:
the answer is C. no solution
Step-by-step explanation:
2x-y=7
y=2x+3
2x-(2x+3)=7
no solution
1.f(x)=0,5x+3 represents a function, Evaluate the function if f(12), *
A. 9
B. 3.04
C. 18
D. 15.5
what two numbers multiply to -36 and add up to 5
Answer:
9 and -4
Step-by-step explanation:
Finding these 2 numbers can be found by guessing and checking. By doing this, it will get you the numbers 9 and -4.
First, test if they multiply to -36:
9(-4)
= -36
Then, check if they add up to 5:
9 + (-4)
= 5
So, 9 and -4 are the 2 numbers that multiply to -36 and add to 5
What is 1+1? Plz help I’m bad at math
Answer: 2
Step-by-step explanation:
Write the equation of a line that is parallel to y=3x + 7 and goes through (2,3)
Answer:
its y+-2+7
Step-by-step explanation:
WILL MARK YOU BRAINLIEST!!!
Answer:
very confusing but i'm guessing the glide reflection on triangle DEF
Step-by-step explanation:
1/2 = 4+D/ xy 7*
find z and x
please help i’ll mark the first one or whoever right brainliest
Answer:
z=97 x=21
Step-by-step explanation:
so straight angles always equal 180°
And assuming that your lines are parallel, the angle under angle z should be 83° just like the angle above angle z
There for to solve for x, first subtract 83 from 180 because that's what that angle is equal to.
Now that you have the equation 4x+13 and you know that it's equal to 97 you can solve it just like a normal inequality.
4x+13=97
4x=84
x=21
Ruby's family took a road trip to Mount Rushmore. Ruby slept for the last 476 miles of the trip. If the total length of the trip was 700 miles, what percentage of the total trip had they traveled when Ruby fell asleep?
700 - 476 =
700
+476
______
1176
Can someone please help me with this question?!!
Answer:
I believe your answer would be C, not sure tho.
Step-by-step explanation:
Hope It's Right!
ASAP help I don’t have time! It detects if it’s right or not:(((
Answer: $45 + 4n + 3
Step-by-step explanation:
Please help! I have been stuck on this all day and its 1:00!!!!!! Please help!
Answer:
820.05 i guess
Step-by-step explanation:
addeverything together
You want to rent the grill at the park. It cost $20 to
rent it for 2 hours. If you only need the grill for 3/4
of that time, how much will it cost to rent the grill?
which statement is always true about a right triangle
Answer:
a right angle is an angle of exactly 90° (degrees) .
Step-by-step explanation:
Answer:
it always has a right corner or in other words it has at least one right 90 degree angle
Step-by-step explanation:
PLEASE HELP ME! THANK YOU!!
Is this isosceles triangle acute or equiangular?
Answer:
Equiangular triangle
Step-by-step explanation:
Can someone please help me on this ty!!
3
The linear function is represented by the equation y=-3x - 2. What can be determined of this equation written in
slope-intercept form? Check all that apply.
3
The y-intercept is - 5
-
The y-intercept is 2.
The y-intercept is -2.
3
The slope is 3
The slope is 2.
The slope is -2.
Answer:
The y-intercept is –2.
The slope is Negative three-fifths
Step-by-step explanation:
I got it right on edge
Find the value of x.
Answer:
I'm not sure but I think that x= 53. All
Charlotte wants to solve the equation 6(2x+1) – 3 = 4x – 5. Which step would be an appropriate first step for Charlotte to take to solve for x? Subtract 1 from both sides to combine like terms Add 4x to both sides to isolate the variable Distribute the 6 to eliminate the parentheses Combine 4x and -5 to simplify the problem
Answer:
Distribute the 6 to eliminate the parentheses
write the linear equation from the given information in slope intercept form passing through (-2,8) and perpendicular to y=2x+5
Answer:
y = [tex]-\frac{1}{2}[/tex] x + 9
Step-by-step explanation:
Given parameters:
Coordinates = (-2,8)
Equation of the line y = 2x + 5;
Unknown:
Linear equation of a line perpendicular = ?
Solution:
From the given expression, a line perpendicular will have a negative inverse of the slope given.
y = 2x + 5
Equation of a line is y = mx + c;
y and x are the coordinates
m is the slope
c is the intercepts
y = 2x + 5 ;
The slope is 2;
A line perpendicular will have a slope of [tex]-\frac{1}{2}[/tex]
Since y = 8 and x = -2, let us find c;
8 = 2 x [tex]-\frac{1}{2}[/tex] + c
8 = -1 + c
c = 8+1 = 9
The equation of the line is;
y = [tex]-\frac{1}{2}[/tex] x + 9
The scale on a map is 2 cm = 25 miles . Dave measured the distance to the next town at 5cm. How many miles away is the next town?
Please help me because I only have until 10:07 and I have another page to do !
Answer:
y=2.5x+9
Step-by-step explanation:
pick any two points and plug 2.5 for x and add 9 to the sum
*Geometry* Please help me answer 17. To 23
17. Longest side
18. Smallest side
19. *i think* parallel
20. hypothesis is false, and a contradiction is reached
21. must be greater
22. SAS (Side-Angle-Side)
23. (To answer this look back in your notes about the section, what other Inequality Theorem is talked about, since i don't know what section this comes from i cannot help you)
what is slope intercept form?
Answer:
y=mx+b
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which of the following is the same as cos15°
Answer:
cos15 is equivalent to sin(75)
Step-by-step explanation:
solving for cos15 degrees gives you ((√(3)+1)*√(2))/4 which is the same as the sin(75)
Im so depressed do Not jit me up Rn Ok soo My mom dead
Answer:
Felt that
Step-by-step explanation:
Answer:
ee
Step-by-step explanation:
reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Need help with this. Please
Answer:
yes it would make a acute triangle
Step-by-step explanation: