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
Bezzdna [24]
3 years ago
15

a car advertisement states that a certain car can be accelerated from rest to 70 km/h in 7 seconds find the cars adverage accele

ration
Mathematics
1 answer:
jekas [21]3 years ago
6 0

Step-by-step explanation:

v=70km/h

t=7 seconds

u=0

first change the unit km/h to m/s

1000km=1m

3600seconds=1h

v=70km/h ×1000km/3600s

v=19.44m/s

acceleration =final velocity(v)-initial velocity(u)/time

acceleration=19.44m/s-0m/s=19.44m/s

19.44/7=2.78 m/s

You might be interested in
Pentagon RSTUV is circumscribed about a circle. What is the value of x if RS = 10, ST = 13, TU = 11, UV = 12, and VR = 12?
Kobotan [32]

Answer:

Step-by-step explanation:

The value of x is 7 ⇒ 1st answer

Step-by-step explanation:

* Lets revise a fact in the circle

- The two tangents drawn from a point out side the circle are equal

∵ RSTUV is circumscribed about a circle

∴ Each side of the pentagon is a tangent to the circle

- Look to the attached figure to know how we will solve the problem

- Each tangent divided into two parts

# RS = x + y

∵ RS = 8

∴ x + y = 8 ⇒ (1)

# RV = x + n

∵ RV = 12

∴ x + n = 12 ⇒ (2)

- Subtract (2) from (1)

∴ y - n = -4 ⇒ (3)

# ST = y + z

∵ ST = 12

∴ y + z = 12 ⇒ (4)

# TU = z + m

∵ TU = 15

∴ z + m = 15 ⇒ (5)

- Subtract (5) from (4)

∴ y - m = -3 ⇒ (6)

# UV = m + n

∵ UV = 9

∴ m + n = 9 ⇒ (7)

- Add (6) and (7)

∴ y + n = 6 ⇒ (8)

- Lets solve equation (3) and equation (8) to find y

∵ y - n = -4 ⇒ (3)

∵ y + n = 6 ⇒ (8)

- Add (3) and (8)

∴ 2y = 2 ⇒ divide two sises by 2

∴ y = 1

- Lets substitute the value of y in equation (1)

∵ x + y = 8 ⇒ (1)

∵ y = 1

∴ x + 1 = 8 ⇒ subtract (1) from both sides

∴ x = 7

* The value of x is 7

plz mark me as brainlyist thxx

7 0
3 years ago
Read 2 more answers
light a flashes every 5 seconds Light b flashes every 6 seconds light c flashes every 7 seconds work out how long it will take f
Svet_ta [14]

Answer:

210 seconds

Step-by-step explanation:

LCM of 5,6 and 7

8 0
2 years ago
What is the maximum percent of net spendable income that should be set aside for housing
stepladder [879]

Answer:

Answer;


-38 %

Step-by-step explanation:

Explanation;


-Budget busters are the large potential problem areas that can destroy a budget. Failure to control even one of these problem areas can result in financial disaster.


-Housing takes about 38 percent of your monthly budget. Housing decisions should be based on need and financial ability, not on internal or external pressure.


-Food takes 12 percent of your monthly budget.  The reduction of a family's food bill requires quantity and quality planning.


-Transportation (purchase and maintenance), takes 15 percent of your monthly budget, Debts takes 5 percent of Net Spendable Income, Insurance takes 5 percent of Net Spendable Income assuming an employer provides medical insurance, Recreation/Entertainment takes 5 percent of Net Spendable Income, Clothing takes 5 percent of Net Spendable Income, Medical and dental takes 5 percent of Net Spendable Income and Savings takes 5 percent of Net Spendable Income

7 0
3 years ago
Read 2 more answers
How do I do number 14?
luda_lava [24]

Answer:

1/4^3 = 1/64

Step-by-step explanation:

you just basically multiply 1/4 for the first 3 ones, you multiply \frac{1}{4} x\frac{1}{4} x\frac{1}{4} = \frac{1}{64}. then you do the same but twice and then once.

3 0
3 years ago
Read 2 more answers
On Monday, Zach sends an e-mail message
Charra [1.4K]
Written out numerically, it is 4x4x4. To work this out you multiply 4x4= 16 and then you have one more 4 to multiply by, so you multiply 16x4=64
4 0
3 years ago
Other questions:
  • M U + m S =90° m T + m S =90° what is the reqson
    15·1 answer
  • A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 2x. Find the height of t
    9·1 answer
  • The cost to build an amusement park ride by a certain contractor is represented by the function: Cost = 2*x2 – 10/x + 36*y + 25
    6·1 answer
  • Which statements must be true about the reflection of ΔXYZ across Line M N? Select three options.
    6·2 answers
  • Which ordered pairs in the form (x, y) are solutions to the equation
    11·1 answer
  • Carlos estimated the height of the door to his classroom in meters. What is a reasonable estimate?
    5·1 answer
  • Which line is parallel to y = 2x + 3?
    8·1 answer
  • What is the value of Negative 3 StartAbsoluteValue 15 minus 2 EndAbsoluteValue + 2 s cubed when s = negative 3?
    12·2 answers
  • HELP!!! Find the length of PM.
    9·2 answers
  • Eight people are competing in an art contest for 1st, 2nd, and 3rd place awards. How many
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!