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
nlexa [21]
3 years ago
13

Find the y-intercept for the parabola defined by

Mathematics
1 answer:
SashulF [63]3 years ago
6 0

Answer:

Step-by-step explanation:

The y-intercept exists where x = 0; plug in 0 for all the x's and solve the equation for y:

y=-7(0)^2-10(0)+3 and

y = 3. The coordinate that represents this is (0, 3)

You might be interested in
A farmer has 120 feet of
sergejj [24]

Answer:  D) Length: 60, Width: 30

Step-by-step explanation:

The totals of the length plus two widths of the other dimensions  given do not add up to 120 feet.

3 0
3 years ago
Ryan is rowing a small boat out to and back from an island 20 miles away at a rate of
Misha Larkins [42]

Answer:

The speed with which Ryan was rowing was 4 mph

Step-by-step explanation:

With a small boat, Ryan wants to row towards an island and come back at a speed of x mph and the island is 20 miles away from him.  

Therefore, total 20 + 20 = 40 miles he rowed for 5 hours.

On the way to the island, there was a wind of 4 mph in the direction of his motion and on the way back also there was a wind of 4 mph in the direction of his motion.

So, in the total journey, he has a speed of (x + 4) mph.

Therefore, \frac{40}{5} = x + 4

⇒ x + 4 = 8

⇒ x = 4 mph.

Therefore, the speed with which Ryan was rowing was 4 mph. (Answer)

4 0
3 years ago
The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the
Alisiya [41]

Answer:

According to the passage, we have the next equation:

\frac{dV}{dt} = \frac{4}{3}\pi*3*r^{2}*\frac{dr}{dt} = K*(4\pi*r^{2} )

where "K" is a proportional constant

Leaving at the end with the next equation:

\frac{dr}{dt} = K

Integrating the equation, we have:

r=K*t+C

where "C" is a constant

Then, we have the 2 conditions for the problem:

1) t=0 → r=10

Replacing in the equation, we have C = 10

2) t=5 → r=8

Replacing in the equation, we have K = -0.4

Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation

0=-0.4*t+10

t = 25 minutes

6 0
2 years ago
Help me answer this plzzz
Dvinal [7]

Answer:

true

Step-by-step explanation:

8 0
2 years ago
Math question down below
RSB [31]
400, because each interval represents 40 and they are 10 intervals apart. 40*10=400
7 0
2 years ago
Other questions:
  • A coffee pot holds 2 and 3/4 quarts of coffee. How much is this in cups?
    13·1 answer
  • TRUE OR FALSE: The number 532 has 2 significant digits. <br> Select one:<br> True<br> False
    12·1 answer
  • Question 5
    14·2 answers
  • Factorize the following algebra expression:<br>27x^3+8y^6​
    5·1 answer
  • Which is the point-slope form of an equation for the line that passes through (0, –5) with slope 2?
    5·1 answer
  • Write a function to represent the set of ordered pairs.
    5·1 answer
  • ⚠️ Urgent PLS HELP<br> links will be reported <br> Find the value of x .
    12·1 answer
  • What is the square root of 9 and 4
    12·1 answer
  • A cereal box measures 2 inches by 8 inches by 12 inches. It is cut out from a piece of cardboard that measures 600 square inches
    15·1 answer
  • 8. A rectangle is 8 feet long and 4 feet wide. If we remove a 2' square out of one
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!