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3 years ago

(10x-15) find x from the angles

Mathematics

1 answer:

Zepler [3.9K]3 years ago

6 0

Answer:

Step-by-step explanation:

You can see the angle opposite to (10x-15) is equal because it is a corresponding angle (learn about them or ask)

The corresponding angle of 10x-15 is 90

10x-15=90

now this is simple algebra

10x=90+15

10x=105

x=105/10

x=10.5

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Write an expression that is divisible by 7. Use it to find two three-digit numbers numbers divisible by 7.

inysia [295]

Answer:

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Step-by-step explanation:

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4 years ago

L 5.2.3 Quiz: Two-Variable Systems: Substitution

Misha Larkins [42]

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

$y = 10x-9\\y = x + 18$

For substitution method we substitute the value of x or y from one equation to other.

Let:

$y = 10x-9--eq(1)\\y = x + 18--eq(2)$

Putting value of y from equation 2 into equation 1

$y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3$

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

$y=x+18\\x=y-18$

Now, putting value of x in equation 1

$y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21$

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

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3 years ago

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sergeinik [125]

The slope will be -1

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Korvikt [17]

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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