3 years ago

Can someone please help me understand linear equations ?

Mathematics

1 answer:

Naddik [55]3 years ago

3 0

A linear equation is an equation between two variables that gives a straight line when plotted on a graph.

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B4%7D%20%7Bx%7D%5E%7B2%7Dy%20-%20%20%5Cfrac%7B8%7D%7B9%7Dx%20%7By%7D%5E%7B2

grin007 [14]

Answer:

all work is shown and pictured

6 0

3 years ago

A bag contains 5 red marbles, 7 blue marbles and 4 green marbles if two marbles are drawn out of the bag what is the probability

Ann [662]

Answer:

0.083 probability that both are red

Step-by-step explanation:

total marbles = 5 + 7 + 4 = 16

Two marbles drawn out.

Find P(red, and red) = (5/16) * (4/15) = 1/(3*4) = 1/12 = 0.08333

8 0

3 years ago

A merchant has coffee worth $20 a pound that she wishes to mix with 70 pounds of coffee worth $90 a pound to get a mixture that

Dvinal [7]

Let us start with assuming the amount of coffee worth $20 a pound to be "x" pounds.

Now she wants to mix "x" pounds of $20 coffee with 70 pounds of $90 coffee.

So the mixture would be (x + 70) pounds.

And the value of mixture would be = 20·x + (90)·(70) = (20x + 6300) dollars.

She want to sell this mixture at rate of $30 a pound. Her earning would be = 30·(x + 70) = (30x + 2100) dollars.

We know that the value of mixture would be equal to her earnings.

30x + 2100 = 20x + 6300

30x - 20x = 6300 - 2100

10x = 4200

x = 420

So, 420 pounds of $20 coffee would be used.

7 0

3 years ago

Read 2 more answers

Rectangle ABCD has vertices A(8,5), B(8,10), C(14,10), and D(14,5). A dilation with a scale factor of 1.2 and centered at the or

ycow [4]

Vertex A would be at (9.6, 6)

3 0

3 years ago

Please assist me with these proofs part 2

Irina18 [472]

Answer:

5- ASA

6- SSS

7- SAS

8- SSS

Step-by-step explanation:

4 0

3 years ago