Answer:
P=2200 , K=35
Step-by-step explanation:
The power, P (watts), of a car engine is proportional to the square of its speed, k%28m%2Fs%29; it means if you have two different powers and speeds, you will have a proportion
P%3Ak%5E2=P%5B1%5D%3Ak%5B1%5D%5E2 or
P%2Fk%5E2=P%5B1%5D%2Fk%5B1%5D%5E2
When given:
k=35, P=2200
Work out the power P%5B1%5D (to 1DP) when the speed is k%5B1%5D=40%28m%2Fs%29
so,
P=2200
k=35
k%5B1%5D=40
and you need P%5B1%5D
2200%2F35%5E2=P%5B1%5D%2F40%5E2
2200%2F1225=P%5B1%5D%2F1600
1.79592=P%5B1%5D%2F1600
1.79592%2A1600=P%5B1%5D
P%5B1%5D=2873.5 watts
If the speed is 30 m per second. Then the power of the car engine will be 1160.8 watts.
What is proportion?A proportionate expression is one in which two items are equal.
The power, P (watts), of a car engine is proportional to the square of its speed s (m/s).
P ∝ s²
P = ks²
We have
s = 35
P = 1580
Then the value of k will be
1580 = (35)² × k
k = 1.2897
Then the equation will be
P = 1.2897s²
If the speed is 30 m per second. Then the power of the car engine will be
P = 1.2897 x 30²
P = 1160.8 watts
More about the proportion link is given below.
https://brainly.com/question/14335762
#SPJ2
5 1/4 divided by 5/8
Answer: 8.5
Step-by-step explanation: we was doing this in class
Answer:
8.4
Step-by-step explanation:
A plumbing company charges a $95 fee for each job, plus $65 foreach hour that the job lasts. The expression 65h + 95can be used to calculate the cost of a job in dollars, where hrepresents the number of hours the job takes to complete. Part A.What is the cost of a job that lasts 1.5 hours?
Answer:160
Step-by-step explanation:
Tom works 12 hours a day at a café. He is paid $8 an hour. How much
money is he paid in 10 days?
Answer:
Tom will be paid $140 in 10 days
Step-by-step explanation:
Answer:
Tom will be paid 960$ is 10 days
A bench is located where the shadows casted by a 16 foot tall flagpole and 40-foot tall tree meet. If the bench is 18 feet from the flag pole, find the distance from the flagpole to the tree
Answer:
The distance from the flagpole to the tree is 27 ft
Step-by-step explanation:
Similar Triangles
Since the elevation angle from which the trees cast their shadows has the same measure and given the tree and the flagpole and the ground form right angles, both triangles are similar.
Similar triangles have their corresponding side lengths proportional. The ratio between the distances from the bench to the tree and flagpole and their heights is constant, i.e.:
[tex]\displaystyle \frac{16}{18}=\frac{40}{x}[/tex]
Where x is the distance from the bench to the tree.
Solving for x:
[tex]\displaystyle x=40\cdot \frac{18}{16}[/tex]
x = 45 feet
Thus the distance from the flagpole to the tree is 45 - 18 = 27 feet
PLS help quickest and accurate answer gets brainliest Mrs. Meadows wants to tile a wall to serve as a splashguard above a basin in the basement. She plans ot use equal-sized tiles to cover an area that measures 48 inches by 36 inches. What is the area of the maximum-size square tile Mrs. Meadows can use and not have to cut any of the tiles? Write your answer as inches squared.
Answer
1729 in^2
Step-by-step explanation:
48 in x 36 in= 1728 in^2. A=LxW
w6+58=-138!! what is x PLEASE
Answer:
the answer is -196 im sorry if i got it wrong
Step-by-step explanation:
Answer:
w = ~ - 32.7
Step-by-step explanation:
w6 + 58 = -138
Subtract 58 on both sides
w6 + 58 - 58 = -138 - 58
w6 = -196
Divide by 6 on both sides to isolate the variable
w6/6 = -196/6
w = - 32.66666666666667
w = ~ - 32.7
Hope this helped!
Have a supercalifragilisticexpialidocious day!
hello! I need a bit of help here
It costs $3.50 for ¾ pound of chicken. How much does it cost for 1 pound of chicken?
Answer:
£4.38
Step-by-step explanation:
You need to find 1/4 and then add it on
Alice's age is 5 years less than 4 times her brother's age. Alice's age is 15 minus her brother's age. How old is Alice?
Answer:
Alice is 6 1/9
Step-by-step explanation:
a is Alice and b is brother
a=4b-5
a=b-15
I prefer to use elimination
a=4b-5
-a=-b15
-3b=10
b=-10/3
a=4(10/3)-5
a=-55/3
Find the missing length indicated
I WILL GIVE BRAINLIEST TO CORRECT ANSWER
Answer:
a 9 cause they both expand by one
What is the y-intercept of the line?
110
A
2
B
3
000
-7
-6
D
Question Help
Writing Ann's car can go 238 miles on 7 gallons of gas. During a drive last weekend, Ann used
8 gallons of gas. How far did she drive? Use pencil and paper. Explain how the problem changes
if you were given the distance Ann drove last weekend instead of how much gas she used.
Answer:
272
Step-by-step explanation:
do 238 divided 7 you get 34 then you multiply it by 8
Given :
Writing lan's car can go 238miles on 7 gallons of gas.
During a drive last weekend, lan used
8 gallons of gas.
To find :-
How far did he drive?
Solution :-
According to Question ,
Car can go 238 mi on 7 gallons of gas.
Using Unitary Method ,
On 1 gallon of gas it will go 238/7 mi
On 8 , it will go 238/7*8= 272miles
Hence the required answer is 272 miles.
PLEASE HELP ME WITH THESE TWO QUESTIONS ILL GIVE BRAINLIEST AND EVERYTHING ELSE
The height of the water in a pool is proportional to the minutes it takes for the pool to fill up. If the height of the water is 2 inches after 5 minutes, what is the constant proportionality/constant of variation in this situation
Answer:
40 minutes for 8 inches
Step-by-step explanation:
HELP ASAP ASAP ASAP HELP
Answer:
4
9 9
14 14
19 19
Step-by-step explanation:
Can someone tell me a good definition for “Annuity” please?
Answer:
an annuity is a type of retirement income product that you buy with some or all of your pension pot. it pays a regular retirement income either for life or for a set period. (hope this is a decent answer lol)
Step-by-step explanation:
Answer:
An annuity is a contract between you and an insurance company in which you make a lump-sum payment or series of payments and, in return, receive regular disbursements, beginning either immediately or at some point in the future.
Step-by-step explanation:
Can someone help me? Thanks! :)
Answer:
60
Step-by-step explanation:
70+50=120
180-120=60
Evaluate the expression when b = 7 and y=-2.
-b+6y
Answer:
-19
Step-by-step explanation:
-7+6(-2)= -7-12=-19
Fill in the blanks .
Answer:
Step-by-step explanation:
<5=75
<11=75
<16=65
I need some help please?
Answer:
38°
Step-by-step explanation:
hope this helps :)
The line of best fit for a scatterplot is shown what is the equation of this line of best fit in slope intercept form?
(pic provided)
1. y=-6x+3/4
2.y=6x+3/4
3. y=-3/4x+6
4. y=3/4x+6
Answer:
3. y=-3/4+6
Step-by-step explanation:
The y-int is 6, so you can already cross out the first two answers. Then, you know the slope is negative because the line is going downward, so -3/4 has to be the slope bc it is negative.
Answer:
y=-3/4x+6
Step-by-step explanation:
the y/intercept is (0,6) because that is the point where the line crosses the y-axis
knowing that use the point (0,6) and (4,3) to find the slope use rise over run so it goes up 3 and right 4
using the slope intercept equation y=mx+b it is y= -3/4+6
it is negative because its going downward
hope this makes sense and helps you guys!
HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
NO SOLUTION, cannot be graphedStep-by-step explanation:
brainliest pleaseAnswer: no solution
because that solution cant be graphed
Step-by-step explanation:
+30 puntos.
1) 7 (x+3) 5x + 5
Step-by-step explanation:
[tex]7(x+3)5x+5 \\
(7x+21)5x +5 \\ 35 {x}^{2} + 105x + 5[/tex]
All I need is the congruency statement and postulate ( SSS,HL,SAS,AAS,ASA,Not crungruent)
Answer:
I believe its AAS
Step-by-step explanation:
-8, 0, 8, 16, 24,... Find the 65th term value.
Answer:
520
Step-by-step explanation:
nth term = + 8
Answer:
need more info. this doesn't make sense
Step-by-step explanation:
will give brainliest for this
Answer:
B
Step-by-step explanation:
2(5x-9) = 11x-3 find m
Answer:
129 degrees
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
The measure of angle PST 129 degrees after applying the properties of the triangle.
What is the triangle?In terms of geometry, a triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
It is given that:
The triangle is shown in the picture.
The equation can be made:
5x - 9 = (180 - (11x - 3))
5x + 11x = 180 + 3 + 9
16x = 192
x = 192/16 = 12
The measure of angle PST = 11x - 3
= 11(12) - 3
= 129 degrees
Thus, the measure of angle PST is 129 degrees after applying the properties of the triangle.
Learn more about the triangle here:
brainly.com/question/25813512
#SPJ2
can someone please help me
5 of 5
Sushil, Alex and Peter share some sweets in
the ratio 4:2:3. Sushil gets 8 more sweets than
Peter. How many sweets does Alex get?
Check
9514 1404 393
Answer:
16
Step-by-step explanation:
If we multiply the numbers by 8, the difference between the first (Sushil) and last (Peter) will be 8.
4 : 2 : 3 = 32 : 16 : 24
This tells us Alex gets 16 sweets.
100 points! WILL GIVE BRAINLIST FOR FIRST ANSWER
A building covers an area of 600 square ft. the eight is 45 feet what is the volume?
Answer:
27000
Step-by-step explanation:
600(45)=27000
Answer:
27000
Step-by-step explanation: