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
alexandr402 [8]
2 years ago
14

HELP!! 10 POINTS AND BRAINLIEST NEED THIS ASAP THANK YOU

Mathematics
2 answers:
dsp732 years ago
5 0
I’m only doing this so the person on top can get brainliest
MissTica2 years ago
3 0

Answer:

Blank 1 (-2) Blank 2 (4)

Step-by-step explanation:

You might be interested in
Part a at what speed v should an archerfish spit the water to shoot down an insect floating on the water surface located at a di
loris [4]
3.01 m/s  
This is a simple projectile calculation. What we want is a vertical velocity such that the time the droplet spends going up and going back down to the surface exactly matches the time the droplet takes to travel horizontally 0.800 meters. The time the droplet spends in the air will is:
 V*sqrt(3)/2 ; Vertical velocity.
 (V*sqrt(3)/2)/9.8 ; Time until droplet reaches maximum height
 (V*sqrt(3))/9.8 ; Double that time for droplet to fall back to the surface.
 
 The droplet's horizontal velocity will be:
 V/2.
 
 So the total distance the droplet travels will be:
 d = (V*sqrt(3))/9.8 * V/2
 d = V^2*sqrt(3)/19.6
 
 Let's substitute the desired distance and solve for V
 d = V^2*sqrt(3)/19.6
 0.8 = V^2*sqrt(3)/19.6
 15.68 = V^2*sqrt(3)
 15.68/sqrt(3) = V^2
 15.68/1.732050808 = V^2
 3.008795809 = V 
 So after rounding to 3 significant figures, the archerfish needs to spit the water at a velocity of 3.01 m/s 
 Let's verify that answer.
 Vertical velocity: 3.01 * sin(60) = 3.01 * 0.866025404 = 2.606736465
 Time of flight = 2.606736465 * 2 / 9.8 = 0.531987034 seconds. 
 Horizontal velocity: 3.01 * cos(60) = 3.01 * 0.5 =
8 0
3 years ago
Nine less than twice a number is 49.<br> What is the number?
ratelena [41]

Answer:

29

Step-by-step explanation:

Assume the number as x

2x - 9 = 49

2x = 58

x = 29

7 0
2 years ago
PLEASE HELP THIS IS MY LAST QUESTION FOR THE DAY!!
ololo11 [35]
This is the answer
Plz mark me brainlist

5 0
2 years ago
9y^2-6y+1=0<br> FIND Y PLEASE HELP STEP BY STEP
dlinn [17]

Answer:

y = 1/3

Step-by-step explanation:

<u>Step 1:  Factor</u>

9y^2 - 6y + 1 = 0

(3y - 1)(3y - 1) = 0

(3y - 1)^2 = 0

<u>Step 2:  Solve for y</u>

3y - 1 + 1 = 0 + 1

3y / 3 = 1 / 3

y = 1/3

Answer: y = 1/3

4 0
2 years ago
One morning, Mr. Chaplin, the Vice Principal took his own temperature in Centigrade as 35 and told Mrs. Jenkins that this is the
nika2105 [10]

Answer:

Yep

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • jesse uses 19 beads to decorate each picture frame. In all, Jesse used 133 beads. How many picture frames did Jesse make?
    12·1 answer
  • Four times the lesser of two consecutive even integers is 12 less than twice the greater number. Find the integers.
    10·1 answer
  • What is the answer Hehshsjsb s. Dhdbsjzbsbajsbxvshsmsndjsjsjs
    7·1 answer
  • Mitchell currently sells stoves for company A at a salary of $12,000 plus a $150 commission for each stove he sells. Company B o
    14·1 answer
  • Select the two values of x that are roots of this equation 2x^2+5x-3=0
    11·1 answer
  • Please help solve for angles Q X and Z
    14·1 answer
  • 2. The table below shows that the distance d varies directly as the time t. Find the constant of variation and the equation whic
    5·1 answer
  • Peaches are on sale for 0.95 cents per pounds if i have 2.75 pounds how much did i pay for the peaches?
    14·2 answers
  • Erik read a total of 4 books over 2 months. After belonging to the book club for 17 months, how many books will Erik have read i
    5·1 answer
  • Dinner Bill- $28.15, Tax- 8%, Tip- 15% What is the final cost.<br>​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!