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IrinaK [193]
3 years ago
12

Use Cramer's rule to solve 4x + 3y = 4, -3x - y = 7. Show your work.

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0
The answer is shown in the picture because it ran afoul of Brainly's "bad word" detector.

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Solve the quadratic equation x2=25/36.<br><br><br>What are the solutions of the equation x2=25/36?
Alinara [238K]

Answer:

x is equal to positive 5/6 and negative 5/6

Step-by-step explanation:

To solve this, you simply need to take the square root of both sides:

x^2 = \frac{25}{36}\\\sqrt{x^2} = \sqrt{\frac{25}{36}}\\x = \pm \frac{5}{6}

7 0
3 years ago
∠1 ​ and ∠2 are supplementary. ∠1=124°∠2=(2x+4)° Select from the drop down menu to correctly answer the question.
Alex_Xolod [135]
Remark
Supplementary angles add up to 180o. 

Givens
<1 = 124
<2 = 2x + 4

I imagine you are looking for either x or <2. 

Equation
<1 + <2 = 180          Substitute the givens
124 + 2x + 4 = 180  Collect like terms on the left.
128 + 2x = 180         Subtract 128 from both sides
2x = 180 - 128          Collect like terms on the right   
2x = 52                     divide by 2
x = 52/2
x = 26 <<<<<<<<< answer

<1 = 124
<2 = 2x + 4 = 2*26 + 4
<2 = 52 + 4
<2 = 56  <<<<<<<< answer

We need choices if you want an exact answer.

3 0
3 years ago
Answer the photo please
alexandr402 [8]

Answer:

66.666666666667% error

Step-by-step explanation:

Percent Error = Vobserved - Vtrue / Vtrue

=  9 - 27 / 27

=  -18/27

= -66.666666666667%

= 66.666666666667% error

I hope this helps!

7 0
3 years ago
Find the domain of the function f of x equals the square root of the quantity three x minus two.
katovenus [111]
F(x)=(3x-2)^0.5
C.x is greater than or equal to two thirds
8 0
3 years ago
Solve each system of linear equations by substitution.
Naddik [55]
3x-2(2x-7)=9 \\ 3x-4x+14=9 \\ -x+14=9 \\ -14\ \ \ \ -14 \\ -x=-5 \\ /-1/-1 \\ \ \ x=5
3 0
2 years ago
Read 2 more answers
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