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tamaranim1 [39]
3 years ago
8

Compare how you would model and record finding the sum and difference of two rocks weighing 2/8 pound and 3/8 pound.

Mathematics
1 answer:
zhenek [66]3 years ago
4 0
It would equal 0.625
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44

Step-by-step explanation:

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You and a friend go out to dinner. The cost of the meal is $45.22. You leave a 20% tip. The sales tax is 6% what is the total co
Doss [256]

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$57.52 I believe that is the correct answer.

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If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen
wolverine [178]

Answer:

answer is

3(3y+4) + 2y = -21 .

7 0
3 years ago
The coordinates of A, B, and C in the diagram are A(p,4), B(6,1), and C(9,q). Which equation correctly relates p and q?
siniylev [52]

Answer:

q+p=7

Step-by-step explanation:

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

In this problem line AB and line BC are perpendicular

so

m_A_B*m_B_C=-1

step 1

Find the slope AB

we have

A(p,4), B(6,1)

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute the values

m=\frac{1-4}{6-p}

m_A_B=-\frac{3}{6-p}

step 2

Find the slope BC

we have

B(6,1), and C(9,q)

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute the values

m=\frac{q-1}{9-6}

m_B_C=\frac{q-1}{3}

step 3

Find the equation that relates p and q

we know that

m_A_B*m_B_C=-1

we have

m_A_B=-\frac{3}{6-p}

m_B_C=\frac{q-1}{3}

substitute

(-\frac{3}{6-p})(\frac{q-1}{3})=-1

(\frac{q-1}{6-p})=1

q-1=6-p\\q+p=7

3 0
3 years ago
Write the equation of the line that passes through the point (6,-2) and is parallel to the line y=1/3x+8
Dahasolnce [82]

If a line is parallel to another it has the same slope. Since the equation y = 1/3x +8 is parallel to the line we are trying to find, our second line will have the slope of 1/3x as well

This is the equation of a line:

y = mx + b

m = slope = 1/3x

b = y intercept = unknown

We have to find b to make this equation complete. How do we do this?

First plug what you know into the equation: y = 1/3x + b

Second we must solve for b. To do this plug a point that passes through the line (in this case they said (6, -2) passes through the line) into the x and y of the equation:

-2 = 1/3(6) + b

Now solve for b!

-2 = 6/3 + b

-2 = 2 + b

- 2 - 2 = b

-4 = b

The equation parallel to y=1/3x + 8 and passes through point (6, -2) is y = 1/3x - 4

The image below is the two line one a coordinate plane. As you can see, they are parallel to each other

Hope this helped!

5 0
3 years ago
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