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3 years ago

Find c.

Mathematics

1 answer:

lesantik [10]3 years ago

3 0

Answer:

C=1 ft

Step-by-step explanation:

c2= a2 + b2 - 2ab

= 8^(2) + 7^(2) - 2(8)(7)

= 113 -112

c2= 1 put a square root on c2 and 1

c = 1

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8z=4(2z+1) show step by step

Verizon [17]

8z=4(2z+1)
First you would distribute the constant into the numbers in the parentheses. so
8z=8z+4
then you would combine like terms which in this case would result in a zero.
8z-8z=0 So the z would be zero or no solution.

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3 years ago

What is the algebraic expression for the following word phrase: the quotient of 8 and the sum of 3 and m?

serg [7]

we know that

the algebraic expression is equal to

$\frac{8}{(3+m)}$

therefore

the answer is

$\frac{8}{(3+m)}$

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3 years ago

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Write an equation of a line with the given slope and y intercept from the graph

goblinko [34]

Answer:

y = 1.5x - 1 or y = 1 1/2x - 1 or y = 3/2x - 1

Step-by-step explanation:

y = mx + b

b is the point on the y

y = -1

b = -1

now the slope

m = rise/run

m = 3/2

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Plz mark as brainliest if correct!!!

3 0

3 years ago

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Line Segment BC has endpoints B (3,5) and C (7,15). Find the missing coordinates of A (x,9) and D (17,y) such that AB and CD are

o-na [289]

Answer:

x=-7

y=11

Step-by-step explanation:

Perpendicular Vectors

Two vectors defined as their endpoints $\vec u=$ and $\vec v=$ are perpendicular if their dot product a.b is zero. The dot product is

$\vec u.\vec v=ac+bd$

In other words

ac+bd=0

Let's treat all the points as the extremes of vectors, so we can easily find the missing coordinates

B (3,5) and C (7,15) define a segment, the vector

$\overrightarrow{BC}==$

The point A is A (x,9), we need to form a vector with B

$\overrightarrow{AB}==$

this vector must be perpendicular to BC, so, applying the dot product we have

$4(x-3)+40=0$

$4x-12=-40$

$x=-7$

The point D is D(17,y), we need to form a vector with C

$\overrightarrow{CD}==$

this vector must be perpendicular to BC, so, applying the dot product we have

$(4)(10)+(10)(y-15)=0$

$40+10y-150=0$

$10y=110$

$y=11$

The points are

$\boxed{A(-7,9), D(17,11)}$

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3 years ago

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wlad13 [49]

Answer:

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