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
Vesnalui [34]
3 years ago
11

The power, P (watts) , of a car engine is proportional to the square of its speed, s ( m / s ) . When s = 30 , P = 1260 . Work o

ut the power when the speed is 25 m / s
Mathematics
1 answer:
Lapatulllka [165]3 years ago
6 0

Answer:

875 Watts

Step-by-step explanation:

Given that :

P α s²

P = ks²

Where k is the proportionality constant

When ; p = 1260 ; s = 30

1260 = k * 30²

1260 = 900k

k = 1260 / 900

k = 1.4

Value of p ; when s = 25

P = 1.4 * s²

P = 1.4 * 25²

P = 1.4 * 625

P = 875 watt

You might be interested in
Find S16 for 1 + 7 + 13 + 19 +
amm1812

S_n=\dfrac{a_1+a_n}{2}\cdot n\\n=16\\a_1=1\\a_{16}=?\\\\a_n=a_1+(n-1)\cdot d\\d=6\\a_{16}=1+(16-1)\cdot6=1+90=91\\\\S_{16}=\dfrac{1+91}{2}\cdot6=46\cdot6=276

4 0
3 years ago
Find the equation of the line that passes through points a and b
Blizzard [7]

Answer:

y - 7 = 2(x - 1)

Step-by-step explanation:

Going from (-3, -1) to (1, 7), x increases by 4 and y by 8.  These numbers are the 'run' and 'rise' of the line, respectively.  Thus, the slope of the red line is m = rise/run = m = 8/4 = 2.

Using the point-slope formula and the point (1, 7), we get:

y - 7 = 2(x - 1)

6 0
2 years ago
Which of the following statements is not​ true? A. If the probability of an event occurring is​ 1.5, then it is certain that eve
yawa3891 [41]

Answer:

Therefore, we conclude that the statement in (A) is incorrect.

Step-by-step explanation:

We have the following sentences:

A) If the probability of an event occurring is​ 1.5, then it is certain that event will occur.  

B) If the probability of an event occurring is​ 0, then it is impossible for that event to occur.

We know that the range of probability of an event occurring is in the segment [0, 1]. In statement under (A), we have the probability that  is equal to 1.5.

Therefore, we conclude that the statement in (A) is incorrect.

8 0
3 years ago
Find the solution set of the inequality.<br> 10c + 5 ≤ 45
Jlenok [28]
The answer is C < 4
-
8 0
1 year ago
Read 2 more answers
Simplify the expression -3 (b-7)
Nataliya [291]
Simply distribute the -3 across the b and -7.

-3(b - 7) = (-3 * b) + (-3 * -7) = -3b + 21

Hope this was helpful, if it wasn't just drop me a DM explaining what didn't make sense.
5 0
3 years ago
Other questions:
  • Please help solve for b.
    11·2 answers
  • The answer is a plane
    11·1 answer
  • 9, 2.5, –4, –10.5, –17, .
    14·1 answer
  • Determine the value of sin 52º 47' (sine of 52 degrees, and 47 minutes). In this case, minutes are 1/60 of a degree.
    12·1 answer
  • Need an answer as soon as possible thank you :}
    5·1 answer
  • Jose and Tamara are decorating for a party. They have two different color streamers, red and blue. The ratio of length of red to
    12·2 answers
  • Which point is the centroid of the triangle?
    8·1 answer
  • A weather balloon is released and rises vertically such that its distance s (t) above the ground during the first 10 sec of flig
    8·1 answer
  • 9p²-?p+49
    13·1 answer
  • Write an equation of the line that passes through (0, 6) and is parallel to y=5x-3<br><br> Y=
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!