1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Archy [21]
3 years ago
13

The cross section of a parabolic sound reflector at the Olympics has a diameter of 20 inches and is 25 inches deep. Write an equ

ation that represents the cross section of the reflector with its vertex at ( ) 0, 0 and its focus to the left of the vertex.
Mathematics
1 answer:
Arturiano [62]3 years ago
7 0

Answer: 69

Step-by-step explanation: Sorry I do not know the answer because I am not smart.  I just need the points so I can answer more questions.  Have a great day though and I wish you luck with your question:)

You might be interested in
Which value is equivalent to sin20°?
AveGali [126]

Answer:

Option C. cos70°

Step-by-step explanation:

we know that

If two angles are complementary, then the sine of one angle is equal to the cosine of the other angle and the cosine of one angle is equal to the sine of the other angle

Remember that

Tow angles are complementary , if the sum of their angles is equal to 90 degrees

so

If A+B=90°

then

sin(A)=cos(B)

cos(A)=sin(B)

In this problem we have

A=20°

B=90°-20°=70°

therefore

sin(20°)=cos(70°)

cos(20°)=sin(70°)

6 0
3 years ago
Twelve members of a band purchase one beverage each during a break at practice. Exactly 5 of the 12 members bought bottled water
Hoochie [10]

Answer:

70

Step-by-step explanation:

You have to use ratios.  If 5 of 12 members bought water, then x of 168 members will buy water.

\frac{5}{12}  = \frac{x}{168}\\12x = 840\\x = 70

70 members will buy bottled water.

8 0
3 years ago
Task:
Elan Coil [88]

Answer:

318 days or 10.6 months,

No, because the time between august and december is 8 months and it would take 10 to complete the tunnel

Step-by-step explanation:

start by determining the slope:

subtract the remaining distance from the total distance to determine distance so far, then divide by time.

m = (3200 - 1700)/5

m = 1500/5

m = 300

y = mx + b

Plug in to solve for x.

3200 = 300x + 0

3200 = 300x

divide y by m. This is x. (this is known as inverse operation if you didnt know already.)

3200 = 300(10.6_)

8 0
3 years ago
Please answer correctly and to the best of your ability
Pavlova-9 [17]
X      3x+7               y     (x, y)
1      3(1) +7          10      (1,10)
2      3(2) +7          13       (2,13)
3      3(3) +7           16      (3,16)
4      3(4) +7          19       (4,19)
7 0
3 years ago
Find 5 solutions to the question.<br><br> Y=-1.5x+2
Black_prince [1.1K]

Answer:

<em>☆</em><em><</em><em> </em><em><u>《</u></em><em><u>HOPE IT WILL HELP YOU</u></em><em>》</em><em>></em><em>☆</em>

Step-by-step explanation:

Y=1.5x+2

<h3><em><u>(</u></em><em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>)</u></em></h3>

y=1.5 (1) +2

y=1.5+2

y=3.5

<h3><em><u>(</u></em><em><u>x</u></em><em><u>=</u></em><em><u>2</u></em><em><u>)</u></em></h3>

y=1.5(2)+2

y=3+2

y=5

<h3><em><u>(</u></em><em><u>x</u></em><em><u>=</u></em><em><u>3</u></em><em><u>)</u></em></h3>

y=1.5 (3)+2

y=4.5+2

y=6.5

<h3>(x=4)</h3>

y=1.5 (4)+2

y=6+2

y=8

<h3><em><u>(</u></em><em><u>x</u></em><em><u>=</u></em><em><u>5</u></em><em><u>)</u></em></h3>

y=1.5 (5)+2

y=7.5+2

y=9.5

<h2><em><u>please</u></em><em><u> </u></em><em><u>mark my ans as BRAIN</u></em><em><u> </u></em><em><u>LIST</u></em></h2>
3 0
3 years ago
Other questions:
  • The width of a rectangle is 7 meters greater than its length
    14·1 answer
  • If there is .9 of a pizza left, how many slices do you think the pizza was originally cut into? if the pizza was to be shared wi
    9·1 answer
  • Let f(x)=9x-1 and g(x)=x^3. <br> Evaluate (f*g)(-1)
    14·1 answer
  • Combine the like terms to create an equivalent expression.<br> 8z+12+3
    12·2 answers
  • NEEDING TO KNOW FAST!
    11·1 answer
  • The first five terms of an arithmetic sequence are 4, 10, 16, 22, and 28. Which function f(x) could be used to describe the xth
    8·1 answer
  • A box is filled with 14 green cards, 2 yellow cards, and 2 red cards. A card is chosen at random from the box. What is the proba
    7·1 answer
  • A different store needs to make at least $20,000 to make a profit in March. They average $685 a day for the month. James used ro
    15·1 answer
  • 2 times the sum of a number and 2 is 0.
    14·1 answer
  • Find the height (in meters) of a storage tank in the shape of a right circular cylinder that has a circumference measuring 4 m a
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!