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
6

The variable z is directly proportional to x. When x is 10, z has the value 140.

Mathematics
1 answer:
gayaneshka [121]3 years ago
7 0

Answer: z = 280

Step-by-step explanation:

If two variables are directly proportional, it means that an increase in the value of one variable causes an increase in the value of the other variable. Also, a decrease in the value of one variable causes an decrease in the value of the other variable.

The variable z is directly proportional to x. If we introduce a constant of variation, the expression would be

z = kx

When x is 10, z has the value 140. It means that

140 = 10k

k = 140/10

k = 14

The equation becomes

z = 14x

the value of z when x = 20 is

z = 14 × 20

z = 280

You might be interested in
Help<br><br> See the picture <br><br> I’m Giving brainlest
Paraphin [41]

Answer:

y=-x+2

Step-by-step explanation:

its asking y=mx+b

m slope (rise/run) --> rises up 2 for every time it moves over -2 times

so slope is -1

b= y intercept = 2

6 0
2 years ago
Read 2 more answers
What is 347500 rounded to the nearest 1000
Annette [7]
It is 348000 because if its 5 or above it rounds up and 4 or below rounds down so the 5 rounds the 7 to an 8
5 0
3 years ago
Factorise fully<br>10c + 25​
liq [111]

Answer:

5(2c+5)

I hope this helps

8 0
2 years ago
After Friday's football game, Megan and her friends go out for ice cream. They share the Mega Mountain sundae and finish the who
Natalija [7]

Answer:  c=  $( 5 x 5.20)

Step-by-step explanation:

Given: Total people =5

Money paid by each person = $5.20

Total cost of the sundae = (Number of people )  x (Money paid by each person)

Total cost of sunday : c= 5 x ($5.20)

i.e.Total cost of sunday = $(5 x 5.20)

i.e.Total cost of sunday = $ 26

Hence, the required equation to represent the total cost (c) of the sundae:

 c=  $( 5 x 5.20)

3 0
3 years ago
3. Find the perimeter of the diagram. Round to the nearest<br> hundredth.
SpyIntel [72]

Answer:

I think the perimeter of the diagram is 5 and if you round it like

If it's 5 or greater, add 1 to the digit in the tenths place, and then remove all the digits to the right. (In the example above, the hundredths digit is a 4 , so you would get 51.0 .) To round a number to the nearest hundredth , look at the next place value to the right (the thousandths this time).

7 0
3 years ago
Other questions:
  • Clear m.<br> - 7 + 4 m +10 = 1 5-2 m
    11·1 answer
  • Simplify the following expression.<br> ​<br> ​ 15p+15p+25p =​
    5·1 answer
  • Which relation is a function?
    13·1 answer
  • There are 81 members in the marching band. The director wants to arrange the band members in rows and columns so that there are
    13·2 answers
  • 5 + 5 + 5 + 5 + 220+ 30004
    11·1 answer
  • Wats 200 + 142<br><br><br> Only genius can answer this!!! <br><br> Lol
    6·2 answers
  • A triangle has vertices A(0, 0), B, (–3, 6), and C(0, 9). What are the coordinates of the triangle after a dilation with a scale
    8·1 answer
  • PLEASE ANSWER THIS ASAP !!!!
    9·2 answers
  • I need this done thanks
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=if%20%5C%3A%20a%20%5C%3A%20%20-%20%20%5Cfrac%7B1%7D%7Ba%7D%20%20%3D%203%20%5C%3A%20prove%20%5C
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!