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
mr Goodwill [35]
3 years ago
8

3(0.7z+2.8)=7(1.5z+7.2)

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

z = -5

Step-by-step explanation:

3(0.7z + 2.8) = 7(1.5z + 7.2)

2.1z + 8.4 = 10.5z + 50.4

2.1z - 10.5z = 50.4 - 8.4

-8.4z = 42

z = 42/(-8.4)

z = -5

You might be interested in
Correct Answer Will get Brainliest
Tanya [424]

Answer:48.6

we know that

You can paint 75 square feet of a surface every 45 minutes

so

using proportion  

Find out how long it takes you to paint a surface area of 81 square feet

45(81)/75=48.6

hope this helped and I hope you get a correct answer :D

5 0
3 years ago
Read 2 more answers
What does range mean in maths
Karo-lina-s [1.5K]
The range is the difference between the highest and lowest values in a set of numbers. To find it, subtract the lowest number in the distribution from the highest.
4 0
3 years ago
Read 2 more answers
Use the​ power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonome
jolli1 [7]

Answer:

Answer is attached

8 0
3 years ago
Last year, there were 24 boys and 20 girls on the school bus. This year, the number of boys decreased by 25%, but the number of
ch4aika [34]

Answer:

Step-by-step explanation:

The number of riders decreased.

6 0
3 years ago
Read 2 more answers
Round 1317 To Nearest Thousand
MrRa [10]
That rounded to the nearest thousand would be 1,317.000
3 0
3 years ago
Other questions:
  • HELP PLEASEEEEEEEEEE!
    10·1 answer
  • Work out plz I’ll give you brainliest
    12·1 answer
  • What is the best choice for the equation of the line of best fit shown? Note that this estimate would be a strong prediction sin
    11·1 answer
  • Is this right? i’ll give brainliest :)
    9·2 answers
  • A juggler is performing her act using several balls. She throws the balls up at an initial height of 4 feet, with a speed of 15
    6·1 answer
  • Solve the system of equation 3x - 4y + 1 = 0 and 9x - 7y = 15<br> using elimination.
    7·1 answer
  • Covert 2/3 years to months
    11·2 answers
  • Use the formula v=u+at to find the velocity when the initial velocity is 3m/s2 the time is 7 seconds
    15·1 answer
  • (6+2i)÷3i solve this problem <br>​
    6·1 answer
  • Four out of 18 male student and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!