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3 years ago

14

Expand. Your answer should be a polynomial in standard form. (6x+1)(1-3x)

2 answers:

Elza [17]3 years ago

6 0

Answer:

$-18x^2+3x+1$

Step-by-step explanation:

$6x *1=6x\\6x*-3x=-18x^2\\1*1=1\\1*-3x=-3x\\$

Add all the like terms

$-9x^2+3x+1$

Ludmilka [50]3 years ago

3 0

Answer:

3x-18x^2+1

Step-by-step explanation:

(6x+1)(1-3x)

6x-18x^2+1-3x

6x-3x-18x^2+1

3x-18x^2+1

Hope this helps :)

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Solve the right triangle, ΔABC, for the missing sides and angle to the nearest tenth given angle B = 27° and side c = 15.

nignag [31]

Answer:

Part 1) $C=90\°$

Part 2) $A=63\°$

Part 3) $b=6.8\ units$

Part 4) $a=13.4\ units$

Step-by-step explanation:

step 1

Find the measure of angle C

we know that

The triangle ABC is a right triangle

so

Angle C is a right angle

therefore

$C=90\°$

step 2

Fin the measure of angle A

we know that

In the right triangle ABC

∠B+∠A=90° -----> by complementary angles

we have

$B=27\°$

substitute

$27\°+A=90\°$

$A=63\°$

step 3

Find the length side b

we know that

In the right triangle ABC

$sin(B)=b/c$

$b=(c)sin(B)$

substitute the given values

$b=(15)sin(27\°)=6.8\ units$

step 4

Find the length side a

we know that

In the right triangle ABC

$sin(A)=a/c$

$a=(c)sin(A)$

substitute the given values

$a=(15)sin(63\°)=13.4\ units$

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VARVARA [1.3K]

Answer:

-2=9

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Step-by-step explanation:

Replace 'x' with the number corresponding to the side of the table.

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Step-by-step explanation:

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