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
Naddika [18.5K]
2 years ago
8

Is x = 7 a solution to the equation 3x - 4 = 15? No Yes

Mathematics
2 answers:
Elis [28]2 years ago
8 0

Answer:

No, because 3 x 7 = 21 - 4 = 17

Step-by-step explanation:

blondinia [14]2 years ago
8 0

Answer:

no

Step-by-step explanation:

To determine if x = 7 is a solution.

Substitute x = 7 into the equation and if left side equals right side then it is a solution

3(7) - 4 = 21 - 4 = 17 ≠ 15

Then x = 7 is not a solution to the equation

You might be interested in
The volume of a box 4in wide 2in high and 5in long is
Free_Kalibri [48]

Answer:

40 cubic inches

Step-by-step explanation:

The Formula for Volume: Length x Width x Height (L x W x H)

4 times 2 times 5 = 40

6 0
2 years ago
Which of the following is a true equation?<br> k=y/x<br> k= x/y<br> x= y/k
faust18 [17]

Answer:

Step-by-step explanation:

Your question is not complete.

According to what do we validate with the equation.

add more info in the question because all of them can be true without any condition given or validation.

7 0
3 years ago
Find the exact value of the trigonometric expression given that sin u = − 8 17 and cos v = − 24 25 . (Both u and v are in Quadra
Rashid [163]

Answer: sin u = -5/13 and cos v = -15/17

Step-by-step explanation:

The nice thing about trig, a little information goes a long way. That’s because there is a lot of geometry and structure in the subject. If I have sin u = opp/hyp, then I know opp is the opposite side from u, and the hypotenuse is hyp, and the adjacent side must fit the Pythagorean equation opp^2 + adj^2 = hyp^2.

So for u: (-5)^2 + adj^2 = 13^2, so with what you gave us (Quad 3),

==> adj of u = -12 therefore cos u = -12/13

Same argument for v: adj = -15,

opp^2 + (-15)^2 = 17^2 ==> opp = -8 therefore sin v = -8/17

The cosine rule for cos (u + v) = (cos u)(cos v) - (sin u)(sin v) and now we substitute: cos (u + v) = (-12/13)(-15/17) - (-5/13)(-8/17)

I am too lazy to do the remaining arithmetic, but I think we have created a way to approach all of the similar problems.

3 0
2 years ago
If the perimeter of a rectangle is 6x2-5x - 19, and you are given that the
antiseptic1488 [7]

Answer:12-14

Step-by-step explanation:

6 0
2 years ago
List all the prime numbers between 30 and 50
Mars2501 [29]

Hi,

Answer: 31,37,41,43,47

I Hope I Helped!

6 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify by combining like terms.<br> 3(-2y-9)-2y
    7·2 answers
  • Find the x if the sequence 3, x, 4x/3 is (a)arithmetic and (b)geometric
    6·1 answer
  • The volume of a cylinder is 24 pi cubic feet. What is the volume of a cone having the same base and same height
    14·2 answers
  • What does f(5)means
    6·1 answer
  • first to answer correctly gets brainleist if u put a link u get reported so yea. bye thx have a blessed day :).
    11·2 answers
  • Plz help giving brainlest
    8·2 answers
  • FIND THE VALUE OF 30 + (-25) + (-10) + 16.
    9·2 answers
  • Which of these skills do you think you could teach someone else? Select all that apply.
    11·1 answer
  • The homeowners association for a residential community is selecting a committee of 7. There are 24 candidates for positions. How
    7·1 answer
  • What is the slope-intercept equation for this line?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!