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3 years ago

Which proportion models this problem?

1 answer:

7 0

Thank you for posting your question here at brainly. Feel free to ask more questions.

The best and most correct answer among the choices provided by the question is C. x over 520 = 5 over 13.

Hope my answer would be a great help for you.

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Need Help ASAP

HACTEHA [7]

It would be 57 minutes. Also love the Kenma profile picture!!

EXPLANATION: so 4:48 is almost an hr to 5:45. Just subtract 3minutes from an hr and you have your answer!

7 0

2 years ago

The product of the sum and the difference of two numbers equals the difference of their squares

Lisa [10]

$(a+b)(a-b)=(a)(a)+(a)(-b)+(b)(a)+(b)(-b)\\\\=a^2-ab+ab-b^2=a^2-b^2$

$Used\ distributive\ property$

8 0

3 years ago

Solve by substitution. Show each step of your work. 5x + y = 15 3x + 2y = 16

uranmaximum [27]

Given equations are 5x + y = 15 and 3x + 2y = 16.

Solving first equation in the form y=mx+b,

5x + y = 15

y = -5x + 15

Substituting y= -5x+15 from first equation into second equation :-

3x + 2y = 16

3x + 2·(-5x + 15) = 16

3x - 10x + 30 = 16

-7x + 30 = 16

7x = 30 - 16 = 14

x = 2

Substituting x=2 into first equation :-

5x + y = 15

5(2) + y = 15

10 + y = 15

y = 15 - 10

y = 5

So final answers are x=2, y=5.

4 0

3 years ago

Read 2 more answers

A line passes through the points (2-2) and (-6. 2). The point (a.-4) is also on the line. What is the value of a?

Marta_Voda [28]

Answer:

a = 6 is the desired value.

Step-by-step explanation:

Let two points be A and B , where A = (2,-2) and B = (-6,2)

Now, slope of the line AB $m= \frac{y_2 - y_1}{x_2 - x_1}$

or, $m = \frac{2-(-2)}{-6 -2} = \frac{4}{-8} = \frac{-1}{2}$

So, the slope m = -(1/2)

Now the general form of the equation is given by

y - y0 = m (x-x0) : where (x0, y0) is any point on the line of the equation.

So, here let (x0,y0) = (2, -2) and m = -1/2

The equation becomes : y -(-2) = (-1/2)(x-2)

or, x + 2y = -2 ia the formed equation.

Now here substiture thepoint (a, -4)

we get: a + 2(-4) = -2

or, a = -2 + 8 = 6

or a = 6 is the desired value.

8 0

3 years ago

Which is the value of this expression when p = 3 and q = negative 9? ((p Superscript negative 5 Baseline) (p Superscript negativ

kiruha [24]

Answer:

I am pretty sure that the answer is D. The value should be 1.

Step-by-step explanation:

8 0

2 years ago