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
inn [45]
3 years ago
11

What is the x-value that solves the system 4x-y=21 and y=3x-7

Mathematics
2 answers:
netineya [11]3 years ago
5 0

Answer:   x=14 is right answer

<em><u>4x-y=21 =</u></em>

Slope = 4

x-intercept = 21/4 = 5.25000

 y-intercept = 21/-1 = -21.00000

<em><u> y=3x-7 = </u></em>

 Slope = 6.000/2.000 = 3.000

 x-intercept = 7/3 = 2.33333

 y-intercept = -7/1 = -7.00000

Step-by-step explanation:

Step  1  :

Equation of a Straight Line

Graph of a Straight Line

Calculate the Y-Intercept

Calculate the X-Intercept

Calculate the Slope

<em><u>Hope this helps.</u></em>

natali 33 [55]3 years ago
4 0

Answer:

x=14

Step-by-step explanation:

4x-y=21

y=3x-7

Substitute the second equation in for y in the first

4x - (3x-7) = 21

Distribute the minus sign

4x -3x +7 = 21

x +7 = 21

Subtract 7 from each side

x+7-7=21-7

x=14

You might be interested in
1/2 + 56.5 = ? what is the answer reward 10 pts for it.
Nat2105 [25]
I'm assuming it's 57. Because 1/2 can equal .5 and 56.5+.5=57
7 0
3 years ago
Read 2 more answers
Mia has two more than three times the number of model cars that Orville has. If Orville has c model cars, Which algebraic expres
Ahat [919]

Answer:

3c+2 is the correct answer

3 0
3 years ago
What is 2+2+6+5x7? Points to whoever can answer! (:
babunello [35]

Answer:

45

I have a $60 yearly membership with something

3 0
3 years ago
Read 2 more answers
2.) Use the Slope Intercept Form of a line to find the equation of the line from point C to point D.
mezya [45]

First we need slope

  • C=(0,0)
  • D(7,12)

\\ \sf\longmapsto m=\dfrac{12-0}{7-0}

\\ \sf\longmapsto m=\dfrac{12}{7}

Put D co-ordinates on y=mx+b

\\ \sf\longmapsto 12=\dfrac{12}{7}(7)+b

\\ \sf\longmapsto 12=12+b

\\ \sf\longmapsto b=12-12

\\ \sf\longmapsto b=0

Now

slope intercept form.

\\ \sf\longmapsto y=\dfrac{12}{7}x

  • As b=0
8 0
2 years ago
Read 2 more answers
Need answer to 2/3+5/4
Anna11 [10]

Answer:

23/12 or 1 and 11/12

Step-by-step explanation:

Your first step is that you need to gain a common denomitor. In this scenario, this is 12. To get this, you can either go through the given factors such as 3 having the factors of 6, 9, and 12 and 4 having the factors of 8, and 12.

Another method is the multiply the two given denominators together, but there are certain instances where you shouldn't do that.

Now that you have a common denominator, you need to change the numerators to accomadate the denominators. For 3 to turn into 12, you need to multiply it by 4, thus you have to do the same to the numerator. For 4 to turn into 12, you need to multiply it by 3. This will give you these two new fractions:

8/12 + 15/12

Add the numerators to get 23/12 and then simplify the two numbers to get the mixed number of 1 and 11/12.

Hope this helps!

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the cotangent of both angle A and angle B.
    7·2 answers
  • 1) 2678 cm into feet.
    15·2 answers
  • Mary wrapped 12 gifts. Mary wrapped 6 number lnumber of gifts that jim wrapped
    5·2 answers
  • Find the area. Show formulas, work, and label your answer.​
    9·1 answer
  • Steve has converted his garage into a separate living space and listed the property for short-term rental on an online platform.
    11·1 answer
  • The sum of two numbers is 62 . The smaller number is 14 less than the larger number. What are the numbers?
    10·2 answers
  • How do you write a solution to a linear system?
    7·2 answers
  • For the length given below draw a line segment to match. Express the measurement as a equivalent mixed number. 4.8 cm
    8·1 answer
  • How to find area of triangle given two sides
    14·1 answer
  • A marketing executive earns an annual salary of $78,300, and she contributes $6,500 per year to her 401(k) plan. If she has a re
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!