All categories

3 years ago

Which ordered pair is a solution of the equation y=-9x+4

Mathematics

2 answers:

dmitriy555 [2]3 years ago

8 0

I'm gonna gonna go with C

fredd [130]3 years ago

6 0

Answer:

Option A. is the solution

Step-by-step explanation:

The equation of the line is y = - 9x + 4

We will plug in the values of each ordered pair given in the options. If they satisfy the equation, will be the solution of the eqaution.

Option A.

(10, -86)

-86 = - 9(10) + 4

-86 = -90 + 4

-86 = -86

Therefore, this ordered pair is the solution of the equation.

Option B.

(-4, -58)

-58 = -9(-4) + 4

-58 = 36 + 4

-58 = 40

Not the solution of the equation.

Option C.

(6, -41)

-41 = -9(6) + 4

-41 = -54 + 4

-41 = -50

Not the solution of the equation.

Option D.

(-6, 57)

57 = -9(-6) + 4

57 = 54 + 4

57 = 58

Not the solution of the equation.

You might be interested in

What square root expression represents the golden ratio?

Juli2301 [7.4K]

I believe the phi ratio^2 = 1 + phi ratio
phi ratio = 1.6180339
phi ratio^2 = 2.6180339

4 0

3 years ago

What is the measure of Angle B A C?

Simora [160]

It's 180-50-50=180-100=80°

8 0

3 years ago

Solve 2x^2 + x - 4 = 0 <br> X2 +

damaskus [11]

Answer:

$\large \boxed{\sf \ \ x = -\dfrac{\sqrt{33}+1}{4} \ \ or \ \ x = \dfrac{\sqrt{33}-1}{4} \ \ }$

Step-by-step explanation:

Hello, please find below my work.

$2x^2+x-4=0\\\\\text{*** divide by 2 both sides ***}\\\\x^2+\dfrac{1}{2}x-2=0\\\\\text{*** complete the square ***}\\\\x^2+\dfrac{1}{2}x-2=(x+\dfrac{1}{4})^2-\dfrac{1^2}{4^2}-2=0\\\\\text{*** simplify ***}\\\\(x+\dfrac{1}{4})^2-\dfrac{1+16*2}{16}=(x+\dfrac{1}{4})^2-\dfrac{33}{16}=0$

$\text{*** add } \dfrac{33}{16} \text{ to both sides ***}\\\\(x+\dfrac{1}{4})^2=\dfrac{33}{16}\\\\\text{**** take the root ***}\\\\x+\dfrac{1}{4}=\pm \dfrac{\sqrt{33}}{4}\\\\\text{*** subtract } \dfrac{1}{4} \text{ from both sides ***}\\\\x = -\dfrac{1}{4} -\dfrac{\sqrt{33}}{4} \ \ or \ \ x = -\dfrac{1}{4} +\dfrac{\sqrt{33}}{4}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

4 0

3 years ago

Matias preformed an operation with 7.6 and a number. He ended up moving the decimal point in 7.6 two places to the left. Matias

olga2289 [7]

Answer:

Matias divided 7.6 by 10 raised to the power of -2.

Step-by-step explanation:

Given : Matias preformed an operation with 7.6 and a number. He ended up moving the decimal point in 7.6 two places to the left.

To find : Matias divided 7.6 by 10 raised to the power of ?

Solution :

Matias preformed an operation with 7.6 and a number.

He ended up moving the decimal point in 7.6 two places to the left we have to multiply it with 0.01

i.e. $7.6\times 0.01=\frac{7.6}{100}=0.076$

So, Matias divided 7.6 by 10 raised to the power of -2.

5 0

3 years ago

Johnathan wants to paint the bottom of his swimming pool the color blue. the swimming pool has a diameter of 50 feet . How many

Orlov [11]

Johnathan will need to paint 1,962.5 square feet.

d = 50^r = 25 A = 2
A = (25)2
A = (3.14)(625) A = 1,962.5

4 0

3 years ago