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3 years ago

1. 8 - n = -4

Mathematics

1 answer:

iogann1982 [59]3 years ago

4 0

Answer:

1.-n=-12; n=12

2.18=-2x; x=-9

3.-n=-12; n=12

4.b=3

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PLS HELP. Find the value of a, AB, BC, CD, AD in the parallelogram. Pls show work.

BaLLatris [955]

Answer:

A= 21

Step-by-step explanation:

a=19.5+1.5=21

21+2.9=23.9

2(21)-18.1

Lines AB and CD are congruent.

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2 years ago

Write the equation of a line that is perpendicular to y=7x−2 and passes through the point (14,8).(1 point) y=7x−90 y=10x−17 y=−1

True [87]

Answer:

$\huge\boxed{y=-\frac{1}{7}x+ 10}$

Step-by-step explanation:

In order to find the equation of this line, we need to note two things.

A) The slope of two lines that are perpendicular will be opposite reciprocals (that is, multiplying them gets us -1.)
B) We can substitute a point inside an incomplete equation to try and find a missing value.

So first, let's find the opposite reciprocal of 7 which will be the slope to this equation.

Reciprocal of 7: $\frac{1}{7}$
Opposite of $\frac{1}{7}$ : $-\frac{1}{7}$

So the slope of this line will be $-\frac{1}{7}$ . The y-intercept will change, and we can substitute what we know into the equation $y=mx+b$ .

$y = -\frac{1}{7}x+b$

Now, we can substitute a point on the graph (14, 8) into this equation to find b.

$8 = -\frac{1}{7} \cdot 14 + b$
$8 = -\frac{14}{7} + b$
$8 = -2 + b$
$b = 10$

Now that we know the y-intercept, we can finish off our equation by plugging that in.

$y = -\frac{1}{7}x + 10$

Hope this helped!

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2 years ago

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Please help me!! this is a quiz and i have 10 minutes!!

Nookie1986 [14]

Answer:

When y = 1/2, the answer would be 0. When y = -4, the answer would be 9. When y = 0, the answer would be 1.

Step-by-step explanation:

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2 years ago

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Aleksandr [31]

Step-by-step explanation:

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= 125.6yd²

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3 years ago

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A teacher has 100 chairs to arrange for an assembly into equal rows Write one way the chairs could be arranged Include the numbe

tiny-mole [99]

That's easy if there is 100 chairs there would be 10 rows with ten chairs in each row

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3 years ago

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