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
kozerog [31]
2 years ago
8

4 x plus 8 y equals 40, when y equals 0.8?

Mathematics
1 answer:
Over [174]2 years ago
5 0

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{x = 8.4}}}}}

Step-by-step explanation:

Given, y = 0.8

To find : value of x

\sf{4x + 8y = 40}

plug the value of y

\longrightarrow{ \sf{4x + 8 \times 0.8 = 40}}

Multiply the numbers: 8 and 0.8

\longrightarrow{ \sf{4x + 6.4 = 40}}

Move 6.4 to right hand side and change it's sign

\longrightarrow{ \sf{4x = 40 - 6.4}}

Subtract 6.4 from 40

\longrightarrow{ \sf{4x = 33.6}}

Divide both sides by 4

\longrightarrow{ \sf{ \frac{4x}{4}  =  \frac{33.6}{4} }}

Calculate

\longrightarrow{ \sf{x  = 8.4}}

Hope I helped!

Best regards ! :D

You might be interested in
Ok guys my friend is telling me that i am doing this problem wrong 4^4+1/2=256.5 and he is tell me that it is 16.5 am i right or
Alexxx [7]

Simplify 4^4 to 256

256 + 1/2 = 256.5

Simplify 256 + 1/2 to 513/2

513/2 = 256.5

Since both sides equal, there are infinitely many solutions.

3 0
3 years ago
Read 2 more answers
Pls answer fast
Natali [406]

Answer:

I am pretty sure its y={5}/{4}x-5

Step-by-step explanation:

8 0
2 years ago
Turn this recurring decimal, 0.545545545, to a fraction in its lowest form.
professor190 [17]
54554/99999. I think I am right but sorry if I am wrong. 
8 0
2 years ago
9 1/2 divided by 3 7/10
OleMash [197]

Solution:

<u>Convert the fractions into improper fractions and solve.</u>

  • 9 1/2 ÷ 3 7/10
  • => 19/2 ÷ 37/10
  • => 19/2 x 10/37
  • => 19 x 5/37
  • => 95/37

<u>Convert the fraction into mixed fraction (Not required):</u>

  • => 95/37 = 37/37 + 37/37 + 21/37
  • => 1 + 1 + 21/37
  • => 2 + 21/37
  • => 2 21/37

The solution to the problem is 2 21/37.

8 0
1 year ago
Read 2 more answers
What is the p(3,1,2) on rolls of a die
Anna35 [415]
Number 3 is 1/6 to role a 1 on the second roll is 1/36= 1/6 X 1/6
to get 2 on the third role is 1/216 so the probability is 1/216 
3 0
3 years ago
Other questions:
  • Salaries for an large engineering company are normally distributed with a mean of $80,000 and a standard deviation of $8,450. An
    15·1 answer
  • The product of (x+2) (x-3) is​
    8·2 answers
  • B=a+3 table of values
    12·1 answer
  • Which of the following phrases can be used to represent -11?
    13·2 answers
  • Rewrite the following equation in exponential
    7·1 answer
  • It wont let me put 2 pictures so the next thing they ask is, how many seconds will it take Adrian to run 3 meters
    13·1 answer
  • What number is 14% of 110?
    12·2 answers
  • (4x + 11)° (5.6 - 10)​
    9·1 answer
  • 29 mm<br> 가<br> 120 mm<br> D<br> What is the perimeter?<br> millimeters
    5·1 answer
  • Havel and Petra are married and will file a joint tax return. Havel has W-2 income of $40,000, and Petra has W-2 income of $41,6
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!