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
algol [13]
3 years ago
9

A van travels at a constant speed of x km/hr over a distance of 45km/hr. If the van increases its speed by 4km/h, it will be abl

e to travel a distance of 48km in the same amount of time. Calculate x.

Mathematics
1 answer:
harkovskaia [24]3 years ago
8 0
Speed = Distance/Time. Let speed be V, distance D and time T

a)Given: D₁ =45km, V₁=x km/h 
V₁=D₁/T
V₁=45/T OR T= 45/V₁

b) Given : D₂ =48 km and V₂ = V₁ + 4 km/h
V₂ = 48/T, but V₂ = V₁+4, then:

V₁+4 = 48/T OR  T=48/(V₁+4). Since Time is same, then we can write:
45/V₁ =48/(V₁+4), solve for V₁:
45V₁ + 180 = 48V₁

3V₁ =180 and V₁ = x = 60 km/h
You might be interested in
Heidi and Andrew designed two raised flowerbeds for their garden. Heidi’s flower bed was 5 feet long by 3 feet wide, and Andrew’
Alona [7]

Answer:

90 ft³

Step-by-step explanation:

Volume is calculated as length × width × height.

Heidi: 5×3×2 = 30 ft³

Andres: 5×6×2 = 60 ft³

Total: 30 + 60 = 90 ft³

3 0
3 years ago
PLZ HELP ME
Likurg_2 [28]

Answer:

x ≈ 14.87

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² = 10² + 11² = 100 + 121 = 221 ( take the square root of both sides )

x = \sqrt{221} ≈ 14.87 ( to the nearest hundredth )

8 0
3 years ago
I don't know how to answer the top two and I don't know if the bottom one is correct, help me please
Tpy6a [65]
1) How many 3/4 does it take to make 9/2?


     Now look at this, 3/4 x 6 = 4 1/2.  4 1/2 is the same as 9/2


   3/4 + 3/4 + 3/4 + 3/4 + 3/4 + 3/4 ---> takes 6, 3/4's to make 9/2

2)  How many 3/4's go into 9/2?


    This is the same question as the 1st one so the answer is 6 :)


3)  9/2 divided by 3/4 = ??


         Use the KEEP< CHANGE< FLIP method, so it turns into  I
                                                                                                    I
                                                                                                    I
                                                                                                    I
      9/2 x 4/3                       < -------------------------------------          I


  This is equal to 36/6 which is 6 :)


The answer is 6 for numbers 1, 2, and 3 :)
6 0
3 years ago
HELP FAST!! What is the volume of a right rectangular prism with a base that measures 4 in by 6 in. and a height of 7 in? A) 17
fredd [130]
You times the height,length,and width together and get 168in.3.
3 0
3 years ago
Read 2 more answers
Find the tenth term in the sequence: 12,10,8,...<br> a) -10<br> b) -6<br> c) -8<br> d) -18
raketka [301]
The answer is -6. because 12,10,8,6,4,2,0,-2,-4,-6.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What comes first addition or multiplication?
    5·1 answer
  • Write words to match expression (23+7)-12
    10·1 answer
  • Help pleaseeeee!!!!!
    14·1 answer
  • NEED THIS TO BE CORRECT, I WILL GIVE ANYTHING!!
    13·2 answers
  • What do roots look like in a graph
    8·1 answer
  • Which statements are true about a rectangular pyramid with a height of 9 centimeters and a base with the dimensions of 4
    6·1 answer
  • Jessie's favorite snack mix recipe calls for 7 cups of cereal, 3 cups of peanuts, and 2 cups of raisins. What is the ratio of pe
    10·1 answer
  • What percent of 88 is 2
    9·1 answer
  • One day a retail store received a box of 24 shirts. If this shipment had 6 defective shirts, what can the store expect for upcom
    6·1 answer
  • (ii) Rule: To get the next term multiply the previous term by<br> First term =<br> 3
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!