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
LUCKY_DIMON [66]
3 years ago
5

Assume that A varies directly with z. If A = 30 when z = 5, find A when z = 9.

Mathematics
2 answers:
pishuonlain [190]3 years ago
6 0
If A varies directly with z, and A is 30 and z is 5, then when z is 1, A is 6.
z: 5 ÷ 5 = 1
A: 30 ÷ 5 = 6
Then, when z is 1, A is 6
So, when z is 9, A is...
z: 1 × 9 = 9
A: 6 × 9 = 54

A is 54
adell [148]3 years ago
5 0
We can this two ways:

1) If A = 30 when Z = 5, then A = 6Z or A = 6*z

So if Z = 9, 9 * 6 = 54. A = 54. 

2) You can set up a proportion:
\frac{30}{5} = \frac{x}{9} where x = the unknown A-value.

Crossmultiply:
5x = 30*9
5x = 270

Divide by 5 on both sides to isolate the variable
x = 54

54 is your A value when Z = 9.

Either way you solve it, your answer is 54. 
You might be interested in
What is the lowest common denominator of 1/3 and 2/5
Citrus2011 [14]

Answer:

15

Step-by-step explanation:

3 and 5 are not common denominators so you have to find the lowest common denominator which is 15 because 3 times 5 is 15

8 0
3 years ago
How are the GCF and the LCM alike and diffrent? Please help
Daniel [21]
The Gcf is finding the greatest numbers the lcm is finding the least factor


and the are the same because your finding the common number> (means same number)
4 0
3 years ago
Help me with this pleaseee…!
masya89 [10]

Answer:

<u><em>All real numbers</em></u>

Step-by-step explanation:

<u><em>We can start out by knowing that</em></u><u><em> the domain of a graph is, the side, to side from the x axis directions. </em></u>

<u><em>We can see that the </em></u><u><em>line continues of the graph shown, meaning it is infinite. </em></u><u><em>Meaning the answer is </em></u><u><em>the domain is all real numbers.</em></u>

<u><em>We can double check by seeing that the other options don't work or aren't enough:</em></u>

x\geq 2\\and\\x\leq 2\\and\\x\geq -4<u><em /></u>

<u><em>The first wouldn't work becuase, yes that is part of the answer, but not the whole answer. The same goes for the others as well, they are on the line and are correct, but the best, and full answer is </em></u><u><em>"All real numbers"</em></u>

3 0
2 years ago
How do I prove that a quadrilateral is a rectangle?
maw [93]
I think you want to prove that a rectangle is a quadrilateral. You can prove this with definitions. The definition of a quadrilateral is that it is a shape with four sides. Since a rectangle has four sides, that proves that a rectangle is a quadrilateral. 
7 0
3 years ago
Read 2 more answers
What is the first step in solving the equation 2/3x x 1/3x+2=5?
Eduardwww [97]

Answer:

Combine like terms

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Jason drove 125 miles without stopping . His average speed was 50 miles per hour . How many hours did Jason drive
    7·2 answers
  • What I the answer to this question question
    10·2 answers
  • Divide each polygon into triangles to find the sum of its angle measures
    9·1 answer
  • Compare 5.7145... and √29
    6·1 answer
  • Trey has answered 15 emails. This is 20% of emails he must answer how many emails does he needs to answer
    6·2 answers
  • SA = 2tr2 + 2trh
    10·1 answer
  • 24 is 4 times as great as k.<br> I NEED A EQUATION!
    11·1 answer
  • PLEASE HELP BRAINLIEST!!!!
    9·2 answers
  • 13. Select all the expressions equivalent to (4x5)(5x6).
    12·1 answer
  • Tammy is saving money in a bank that charges a fee if the account is inactive for an extended period of time. The equation y=200
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!