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
KiRa [710]
4 years ago
13

Can someone talk me through the steps?

Mathematics
1 answer:
dimulka [17.4K]4 years ago
3 0
Y = 6.9x + 5.1.....multiply by 10 to get rid of decimals
10y = 69x + 51 ...subtract 69x from both sides
-69x + 10y = 51
You might be interested in
1. The sum of first n terms of an arithmetic sequence is 3n²+4n
valentina_108 [34]

Answer:

<h3>           a.  a₁=7,     b.  a_n=7n+1,    c.  a₂₀=141</h3>

Step-by-step explanation:

a.

 a_1=S_1=3\cdot1^2+4\cdot1=3+4=7

b.

   a_1+a_2=S_2\\\\a_1+a_1+d=3\cdot2^2+4\cdot2\\\\7+7+d=3\cdot4+8\\\\14+d=12+8\\\\d=6\\\\\\a_n=a_1+d(n-1)\\\\a_n=7+6(n-1)\\\\a_n=7+6n-6\\\\\underline{a_n=7n+1}

c.

 a_{20}=7\cdot20+1=141

5 0
3 years ago
Linda has a part-time job at the school. She makes between 44.00 and $51.00 a dayWhich is a reasonable estimate of the amount of
Luba_88 [7]

Answer:

$285

Step-by-step explanation:

The mode of 44 and 51 is 47.50 and 47.50 x 6 equals 285

6 0
3 years ago
Mrs. Salas drives 115 miles per week to give 9 voice lessons. She deducts the cost of eight gallons of gasoline at $2 per gallon
ladessa [460]

the answer is $299. If you write an equation, it would be x=35(9)-16. $35 each for 9 lessons. And 2*8= 16.

x=35(9)-16

x=315-16

x=299

7 0
3 years ago
Abby rode the Metro bus 4 miles farther than James rode. The sum of their distances traveled is 28 miles. How far did James ride
ohaa [14]
A. define the variables : a = abby's miles, j = james' miles

b. a = j + 4......j = a - 4

c. a + j = 28
    a = j + 4
    
 d. (j + 4) + j = 28
      2j + 4 = 28
      2j = 28 - 4
      2j = 24
       j = 24/2
       j = 12
  
       a = j + 4
       a = 12 + 4
       a = 16

e. check..
     a + j = 28
     16 + 12 = 28
      28 = 28 (correct)

solution is : abby's miles (a) = 16
                   james' miles (j) = 12


8 0
3 years ago
Fill in the missing work and justification for step 5 when solving 4(x + 1) - 8.
belka [17]

Answer:

multiplication property of equality

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Steve has a regular deck of playing cards. He wants to know the probability of pulling two clubs from the deck in a row without
    5·1 answer
  • The household income in a community is normally distributed with a mean of $42,000 and a STDev of $5,000. Find the proportion of
    11·1 answer
  • What sentence about markdowns and markups is true?
    12·1 answer
  • PLEASE HELP I AM ON A TIME LIMIT
    15·1 answer
  • Rogerio drives 1 hour and 18 min to meet a friend. the first 30 min of his trip was mostly highway driving, so he averaged 64 mi
    10·2 answers
  • 56-45÷5[90÷3{4-(25-31)}]​
    6·1 answer
  • Use a calculator to find angle theta for which tan theta = 2. Round to the nearest hundredth.
    9·1 answer
  • Rotate shape A 180° with centre of rotation (2,-1)​
    11·1 answer
  • What is the value of the underlined digit?
    14·2 answers
  • 20 points, please help. Geometry help needed. <br> C is 56.55<br> D is 25.38
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!