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
andrew11 [14]
2 years ago
5

Two groups of tourists are on the same floor of a skyscraper they are visiting, and they board adjacent elevators at the same ti

me. The first group is headed up at a speed of 140 meters per minute. The second is headed down at a speed of 290 meters per minute. How long will it be before the elevators are 360 meters apart?
Mathematics
1 answer:
sveticcg [70]2 years ago
7 0

Let time be t , distance be d

  • 140t=d-(1)
  • 290t=360-d-(2)

Put value in eq(2)

\\ \rm\longmapsto 290t=360-(140t)

\\ \rm\longmapsto 440t=360

\\ \rm\longmapsto t=1.2min

You might be interested in
The product of any two numbers is composite ( true/false) and why?
Reptile [31]
<u><em>FALSE.</em></u><em></em> 
A composite number is the opposite of a prime number. This is false because of the possibility of the following scenario:
The two numbers are 1 and a prime number.
This is because <em>one multiplied by any number is that number.</em> A prime number cannot become a composite number just because it is being multiplied by one. For example:
1 x 7 = 7 (prime) 
Hope this helps!
~<em>Archimedes El</em>∈<em>ven</em>
7 0
3 years ago
Using the completing-the-square method, rewrite f(x) = x2 + 10x + 7 in vertex form
mr Goodwill [35]

Answer:

f(x) = (x - (-5))^2 + (-18)

Step-by-step explanation:

Given:

f(x) = x^2 + 10x + 7

Rewrite f(x) in vertex form

Solution:

f(x) = ax^2 + bx + c is a quadratic function.

The vertex form of f(x) is a(x - h)^2 + k, where (h, k) is the vertex.

=> f(x) = x^2 + 10x + 7

          = x^2 + 10x + 25 - 18

          = (x + 5)^ - 18

          = (x - (-5))^2 + (-18)

=> f(x) can be rewritten in form of a(x - h)^2 + k, where (h, k) is the vertex, with a = 1, h = -5, k = -18

6 0
3 years ago
What is twice 2^30? write using exponents
OlgaM077 [116]
2^31

use the rule that states the product of the same base with different powers you add them

(a^n) times (a^m) = a^(n+m)
5 0
3 years ago
Given the following triangle side lengths, identify the triangle as acute, right or obtuse. Show your work.
MatroZZZ [7]
Acute. This is the right answer
4 0
3 years ago
How many quarts of water does Paul need to add to keep the
gladu [14]

Answer:

  • Step-by-step explanation:

8 0
2 years ago
Other questions:
  • PLEASE HELP MEH! I NEED HELP ASAP
    13·2 answers
  • A function is given. f(x) = 5x − 7; x = 2, x = 3 (a) determine the net change between the given values of the variable.
    15·1 answer
  • Add the polynomials. <br> (7y^2+2y-9)+(-3y^2-y) = ?
    11·1 answer
  • X is a distance of 4 units to the left of 0.
    12·1 answer
  • Write an absolute value expression to represent the distance between -2 and 4 on an number line. Then evaluate the expression.
    7·2 answers
  • Need help correct only<br> 6cm<br> 12cm<br> 16cm<br> 32cm<br> i think 16 but not sure
    15·2 answers
  • Linda sells the bracelets and necklaces she makes online. She sells her bracelets for $6 and her necklaces for $10.
    13·1 answer
  • How many grams are equal to 4965 mg
    14·1 answer
  • Solve the following using factoring x²+12=7×​
    13·1 answer
  • I need help on this.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!