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
Tpy6a [65]
3 years ago
13

Solve by substitution or elimination 4X – 3y = 7 4x + y = 11

Mathematics
1 answer:
Simora [160]3 years ago
8 0

Answer:

(5/2 , 1)

Step-by-step explanation:

4X – 3y = 7

4x + y = 11

———————

Multiply a -1 to the bottom equation to get the 4x as a negative so it cancels out.

4x - 3y = 7

-4x - y = -11

——————

-4y = -4

Divide by -4

y = 1

Substitute the value of y into one of the equations and solve

4x - 3(1) = 7

4x -3 = 7

4x = 10

Divide by 4

X = 10/4

Simplify by dividing by 2

x = 5/2

Therefore the answer is (5/2, 1 )

You might be interested in
6. Solve each equation and check your solution. 3x - 6 = 4(2 - 3x) - 8x
Advocard [28]

Answer:

Multiple answers (Work & answers below)

Step-by-step explanation:

6 0
3 years ago
Add 77 -10 with its additive inverse.​
Ganezh [65]

Answer: 77 - 10 = 67, and the additive inverse of 77 - 10 is 77 + 10. 77 + 10 = 87.

Hope this helps! This question was kind of confusing for me, because I didn’t understand why you said to add 77 - 10… is this is the incorrect answer sorry your question was worded weird

4 0
2 years ago
Round 1.983 to the nearest hundredth
svet-max [94.6K]

Answer:

1.98

Step-by-step explanation:

Find the number in the hundredth place 8 and look one place to the right for the rounding digit 3. Round up if this number is greater than or equal to 5 and round down if it is less than 5.

4 0
3 years ago
Depreciation is the decrease or loss in value of an item due to age, wear, or market conditions. We usually consider depreciatio
Alik [6]

Answer:The value of the bulldozer after 3 years is $121950

Step-by-step explanation:

We would apply the straight line depreciation method. In this method, the value of the asset(bulldozer) is reduced linearly over its useful life until it reaches its salvage value. The formula is expressed as

Annual depreciation expense =

(Cost of the asset - salvage value)/useful life of the asset.

From the given information,

Useful life = 23 years

Salvage value of the bulldozer = $14950

Cost of the new bulldozer is $138000

Therefore

Annual depreciation = (138000 - 14950)/ 23 = $5350

The value of the bulldozer at any point would be V. Therefore

5350 = (138000 - V)/ t

5350t = 138000 - V

V = 138000 - 5350t

The value of the bulldozer after 3 years would be

V = 138000 - 5350×3 = $121950

4 0
3 years ago
Translate each phrase and select the one that is DIFFERENT from the others. two more than a number, n the total of n and 2 twice
tensa zangetsu [6.8K]

Answer:

Option C.

Step-by-step explanation:

We need to translate each phrase and find the different expression.

"+" sign is used for sum, more and total.

Twice means two times of a number.

Let n be the unknown number.

Two more than a number = n+2

The total of n and 2 = n+2

Twice the number n = 2n

Sum of n and 2 = n+2

From the above expressions it is clear that only 2n is different from other.

Therefore, the correct option is C.

7 0
3 years ago
Other questions:
  • write a linear equation in slope-intercept form to model a tee 4 feet tall that grows 4 inches each year
    15·1 answer
  • Find the equation of the line. <br> Use exact numbers
    5·1 answer
  • Which expression could NOT be used to find the number of square pieces
    5·1 answer
  • Used use euler's method with step size 0.1 to estimate y(0.5), where y(x) is the solution of the initial-value problem y ' = y +
    5·1 answer
  • I need help on #59, #60
    8·2 answers
  • Which pair of addends form compatible numbers in the expression 6.1 + 8.4 + 1.6
    9·1 answer
  • A class consists of 68 female students and 80 male students. One student is selected at random. What is the probability that the
    11·2 answers
  • Plzzzzzzzzzzz answer asap
    8·1 answer
  • Need help ASAP if any can help me that’ll mean a lot I’ll heart your answer :)
    9·1 answer
  • 80 PTS <br> In the triangle below X=[?] cm. Round to the nearest tenth.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!