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
MrRa [10]
3 years ago
7

Carol walks 12km at xkm/h and then a further 6 km at (x-1) km/h the total time taken is 5 hours . Write an equation in terms of

x and show that it simplifies to 5x squared -23x+12=0
Mathematics
1 answer:
Arisa [49]3 years ago
8 0

Step-by-step explanation:

12/x + 6/(x-1) = 5

12(x-1) + 6(x) = 5(x)(x-1)

18x - 12 = 5x² - 5x

5x² - 23x + 12 = 0. (Shown)

You might be interested in
What is 8x over 2y ?
Nana76 [90]

Answer:

6 2/3.. i think

Step-by-step explanation:

hopefully u understand my messy handwriting

4 0
3 years ago
17+(-4)-4/5j-2/5j+6​
Snowcat [4.5K]

Answer:

19 - (6/5)j

Step-by-step explanation:

In this expression we have addition, subtraction and multiplication.

According to order of operations rules, mult. and div. must be carried out before add. or subt.

Therefore, we begin with 17+(-4), which becomes 17 - 4, or 13.

Next we see -4/5j, by which I assume you mean -4/5 * j.

Summarizing what we have so far:

13  - (4/5)j - 2/5j + 6

Combining the j terms, we get

13 - (6/5)j + 6, which collapses to 19 - (6/5)j.

7 0
3 years ago
How can you show the two objects are proportional.
8_murik_8 [283]
Their shape and size
7 0
3 years ago
Read 2 more answers
Simplify the following:
aivan3 [116]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
Need help doing this, please show steps. :)
Pavel [41]

Answer:

75.02 ft

Step-by-step explanation:

Split the problem into 2 different part. The bottom part of the tree is 5 feet because that's where your eye levels are, so you just have to solve the top part of the tree.

The top part of the tree is solved by finding the height of the triangle. If you remember SohCahToa, the opposite side of the angle is solved using tangent.

tan(angle) = opposite/adjacent

tan(35) = x/100,   x is just the unknown height of the tree.

multiply 100 on both side to get x by itself.

x = 100tan(35)

x = 70.02

add that top height of the tree(70.02ft) with the bottom height of the tree(5ft).

70.02+5 = 75.02 ft

6 0
3 years ago
Read 2 more answers
Other questions:
  • How would a bigger down payment be beneficial to borrowers?
    11·2 answers
  • Joan has 287 dollars to spend on 7 books after buying them she had 14 dollars how much did the books cost
    15·1 answer
  • What are the values of a and b
    8·1 answer
  • Find the value of x and the measure of the angle labeled 2xº
    9·1 answer
  • Belinda babysits her neighborhood's children in the evening every 14 days. Belinda goes to vist her grandmother in the afternoon
    5·2 answers
  • I don't know i just need help with this quiz ok
    8·1 answer
  • What’s the answer for this
    11·1 answer
  • I will give brainliest Given ⊙N, what is mABC ?
    13·2 answers
  • Find the HCF of 30 and 45.
    8·2 answers
  • What is the formula for finding the perimeter of a quads?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!