1 year ago

This is very very very confusing!!!! Anyone know 8th grade stuff?

Mathematics

1 answer:

Gala2k [10]1 year ago

3 0

Answer:

yes

Step-by-step explanation:

There are no repeating numbers in the domain

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At Pizza Pi, 68% of the pizzas made last week had extra cheese. If 17 pizzas had extra cheese, how many pizzas in all were made

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2 years ago

The midpoint of AB is M (6,1). If the coordinates of A are (4, 8), what are the coordinates of B?

geniusboy [140]

Answer:

$B = (8,-6)$

Step-by-step explanation:

Given

$A = (4,8)$

$M = (6,1)$ -- Midpoint

Required

Find B

This question will be solved using midpoint formula;

$M(x,y) = (\frac{x_1 + x_2}{2},\frac{y_1 + y_2}{2})$

Where

$A(x_1,y_1) = (4,8)$

$M(x,y) = (6,1)$

Substitute these values in the midpoint formula;

$(6,1) = (\frac{4 + x_2}{2},\frac{8+y_2}{2})$

By comparison; we have:

$\frac{4 + x_2}{2} = 6$ -- (1)

$\frac{8 + y_2}{2} = 1$ -- (2)

Solving (1)

$\frac{4 + x_2}{2} = 6$

Multiply both sides by 2

$4 + x_2 = 12$

Subtract 4 from both sides

$x_2 = 8$

Solving (2)

$\frac{8 + y_2}{2} = 1$

Multiply both sides by 2

$8 + y_2 = 2$

Subtract 8 from both sides

$y_2 = -6$

Hence:

$B = (8,-6)$

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2 years ago

A bag contains blue marbles and red marbles, 107 in total. The number of blue marbles is 7 more than 4 times the number of red m

Ratling [72]

Answer: red is 13.36

Blue is 93.625

Step-by-step explanation:

Let the red marbles be y

Based on the question,red is 4times which means 4y

And blue is 7times greater than red which means 7(4y)

Blue + red=107

7(4y) + 4y=107

28y+4y=107

32y=107

Divide both sides by 32

Y=3.34

Red =4y

Red= 4(3.34)

Red =13.36

Blue= 7(4y)

Blue=7(4×3.34)

Blue= 93.625

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3 years ago