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
Tresset [83]
3 years ago
7

How many solutions exist for the following system of equations: 4x + y = 7 and 3x - y = 0 a. no solution b. one solution c. infi

nitely many d. cannot be determined
Mathematics
1 answer:
Zanzabum3 years ago
6 0
4x+y=7 \\
\underline{3x-y=0} \\
4x+3x=7+0 \\
7x=7 \ \ \ |\div 7 \\
x=1 \\ \\
3x-y=0 \\
3 \times 1-y=0 \\
3-y=0 \ \ \ |+y \\
y=3 \\ \\
(x,y)=(1,3)

The answer is B. one solution.
You might be interested in
What is the solution to the equation 6y –2(y + 1) = 3(y – 2) + 6?
AleksAgata [21]

Answer: y=2

Step-by-step explanation:

Distribute the numbers -2 and 3...

6y-2y-2=3y-6+6

The -6 and 6 cancel each other out...

6y-2y-2=3y

Combine like terms....

4y-2=3y

Move 4y over....

-2=-y

Multiply both sides by -1.....

2=y

That’s your solution! Hope this helps!

8 0
3 years ago
Z = -3x +5y<br> Minimum value of z?
NeTakaya

Answer:

minimum value of z is 0

Step-by-step explanation:

if x and y both equal zero, then the value of z is zero, which is your answer.

7 0
3 years ago
Type the correct answer in each box. Spell all words correctly, and use numerals instead of words for numbers. If necessary, use
Firlakuza [10]
Given:
2 rectangular prism.
same height
square bases


                                    Box A     Box B
Square Base side          2 ft        0.75 ft
Height                            4 ft        4 ft

Solving for the space inside each rectangular prism, we need to find its volume.

Volume of a rectangular prism = length * width * height

Box A: 
Volume = 2 ft * 2 ft * 4 ft = 16 cubic feet

Box B:
Volume = 0.75 ft * 0.75 ft * 4 ft = 2.25 cubic feet

Box A - Box B = difference in space

16 cubic feet - 2.25 cubic feet = 13.75 cubic feet

Box A contains 13.75 cubic feet more space than Box B. 
8 0
3 years ago
Read 2 more answers
Determine whether the improper integral converges or diverges, and find the value of each that converges.
Ksju [112]

Answer:converge at I=\frac{1}{3}

Step-by-step explanation:

Given

Improper Integral I is given as

I=\int^{\infty}_{3}\frac{1}{x^2}dx

integration of \frac{1}{x^2}  is  -\frac{1}{x}

I=\left [ -\frac{1}{x}\right ]^{\infty}_3

substituting value

I=-\left [ \frac{1}{\infty }-\frac{1}{3}\right ]

I=-\left [ 0-\frac{1}{3}\right ]

I=\frac{1}{3}

so the value of integral converges at \frac{1}{3}

8 0
3 years ago
Three students performed a science experiment using salt and a beaker. The beaker contained 530.2 grams of salt before the exper
anzhelika [568]
We are subtracting 3 * 47.36 from 530.2

3 * 47.36 = <span>142.08
</span>
530.2 - 142.08 = <span>388.12

Your answer should be </span><span>388.12 grams left. Hope this helps!</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • When a number is decreased by 54%, the result is 28. What is the original number to
    12·1 answer
  • On the first Day of his trip, he drove for 11 hours and traveled 693 miles. At what unit rate did he travel, in miles per hour?
    9·1 answer
  • I need help with these 3 questions. 25 points!!!
    14·1 answer
  • Jamal works part-time earning $8,000 per year. He reduces his work hours by half so that he can go to school. Jamal completes hi
    15·1 answer
  • Please help me <br><br> 8 a^-2=
    9·1 answer
  • Hi please i nedd help with these questions .
    9·2 answers
  • What is the volume of this prism
    14·2 answers
  • How do you solve the following equation for x?<br><br> −2x²−8x+24=0
    10·1 answer
  • How many feet are in 120 inches?
    9·2 answers
  • The functions f(x) and g(x) are shown on the graph.f(x) = 1x1What is g(x)?f(x) = x1g(x) = ?A. g(x) = x + 3B. g(x) = x + 3O c. g(
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!