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bezimeni [28]
4 years ago
15

What is the solution to the following system of equations? 4x + 2y = 12 x − y = 3 (3, 0) (0, 3) (0, −3) (2, 3)

Mathematics
1 answer:
babymother [125]4 years ago
8 0

Answer: First Option

(3, 0)

Step-by-step explanation:

We have the following system of equations:

4x + 2y = 12

x - y = 3

To find the solution of the system of linear equations multiply the second equation by -4 and add it to the first equation

4x + 2y = 12

-4x +4y = -12

--------------------------------------

0+6y=0

y=0

Now substitute the value of y in the first or second equation:

x - 0 = 3

x = 3

The solution is: (3, 0)

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The correct answer is B C and D
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3 years ago
Please help me solve this problem.​
Igoryamba

Answer:

The value of x will be:

x=22\sqrt{2}

or

x = 31.1

Step-by-step explanation:

Given

  • a = 22
  • b = 22

To determine

hypotenuse x = ?

For a right-angled triangle with sides, a and b the hypotenuse c is defined as

c=\sqrt{a^2+b^2}

substituting a = 22, b = 22 and c = x

x=\sqrt{22^2+22^2}

x=\sqrt{22^2\cdot \:2}

Apply radical rule:  \sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b},\:\quad \mathrm{\:assuming\:}a\ge 0,\:b\ge 0

x=\sqrt{2}\sqrt{22^2}

x=22\sqrt{2}

or

x = 31.1

Therefore, the value of x will be:

x=22\sqrt{2}

or

x = 31.1

7 0
3 years ago
Which pyramids with base area B and height h have equal volumes.
Reptile [31]

C and D

the volume ( V) of a pyramid is found using the formula

V = \frac{1}{3} × area of base × height

calculating each of the volumes gives

(A)  V = \frac{1}{3} × 10.5 × 6 = 21 in³

(B)  V = \frac{1}{3} × 3.6 × 8 = 9.6 in³

(C)  V = \frac{1}{3} × 4.2 × 12 = 16,8 in³

(D)  V = \frac{1}{3} × 6 × 8.4 = 16.8 in³

C and D have equal volumes


5 0
3 years ago
I need help with this 2 step equation word problem. I don't need to answer it, I just need to get the equation.
pshichka [43]
So it would be 4x (x meaning the price of each pizza) + 3 for the delivery charge. The equation is 4x + 3. That would be the price of all pizzas plus delivery charge :)
3 0
3 years ago
-11r ≥ 220<br> how to solve? and what are the steps to solve<br> first gets marked brainliest
Bezzdna [24]

Step-by-step explanation:

here

-11r ≥ 220

-11r/-11 ≥ 220/-11 (dividing both side with -11 to eliminate -11 )

r ≥-20

6 0
2 years ago
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