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scZoUnD [109]
3 years ago
13

Triangles PQR and RST are similar right triangles.

Mathematics
1 answer:
loris [4]3 years ago
7 0

Answer:

A. \frac{3 - 7}{-4 -(-7)} = \frac{-5 - 3}{2 - (-4)}

Step-by-step explanation:

Slope of PR = \frac{y_2 - y_1}{x_2 - x_1}

Where,

P(-7, 7) = (x_1, y_1)

R(-4, 3) = (x_2, y_2)

Slope of PR = \frac{3 - 7}{-4 -(-7)}

Slope of RT = \frac{y_2 - y_1}{x_2 - x_1}

Where,

R(-4, 3) = (x_1, y_1)

T(2, -5) = (x_2, y_2)

Slope of RT = \frac{-5 - 3}{2 - (-4)}

Therefore, the proportion that can be used to show that the slope of PR = the slope of RT is:

\frac{3 - 7}{-4 -(-7)} = \frac{-5 - 3}{2 - (-4)}

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Sam makes some bread rolls. He gives 2/5 of the bread to his neighbor and 4/9 of the remainder to his cousin. He has 15 tools le
Cerrena [4.2K]

Answer:

Sam initially made 45 bread rolls

Step-by-step explanation:

Let x = total number of bread rolls made by Sam. He gives 2/5 of the bread to his neighbor. This means he gave 2/5 × x =

2x/5 bread rolls to his neighbor.

The remainder would be x - 2x/5 =3x/5

He gave 4/9 of the remainder to his cousin = 4/9 ×3x/5=12x/45

=4x/15

He has 15 bread rolls left

Total number of bread rolls = what he has left + what he gave his cousin + what he gave his neighbor

x = 15 + 4x/15 + 2x/5

Taking LCM of 15 and cross multiplying

15x= 225+4x + 6x

15x = 225 +10x

15x-10x = 225

5x = 225

x = 225/5 =45

Sam initially made 45 bread rolls

4 0
3 years ago
Which ordered pair is a solution to the system of linear equations 1/2x-3/4y=11/60 and 2/5x+1/6y=3/10
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Answer:

(\frac{2}{3} , \frac{1}{5})

Step-by-step explanation:

The fastest way to do this is to convert both equations into slope-intercept form and graph it to find the solution point. If you wanted to do this algebraically, you might want to start out by getting rid of the fractions and using either substitution or elimination to find x and y.

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A recpe with teo indgredients with a ratio of 1/2 cup 1/8 cup what would meet ths indgredients?
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