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3 years ago

12

At a tree farm, there are 9 rows of 36 spruce trees.In each row, 14 of the spruce trees are blue spruce. How many spruce trees a

re NOT blue spruce?

2 answers:

laiz [17]3 years ago

7 0

Answer:

198 spruce are NOT blue

Step-by-step explanation:

Akimi4 [234]3 years ago

6 0

Answer:

22 not blue each row.

198 = ANSWER

Step-by-step explanation:

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Expand the brackets 5(2x + 3)

zimovet [89]

Answer:

10x+15

Step-by-step explanation:

5 x 2x=10x

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2 years ago

Read 2 more answers

Mandy divided the sum of 12 and

Aleksandr [31]

Answer:

35

Step-by-step explanation:

I hope this helps you.

12+24=38

38÷6=31

31+4=35

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2 years ago

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lapo4ka [179]

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the awencer is 4.2

Step-by-step explanation:

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3 years ago

A ladder leaning against the side of a building touches the building at a point 12 meters from the ground. If the foot of the la

Goryan [66]

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2 years ago

HELP ON THIS PROBLEM!!<br><br> Solve the following 0deg< x< 360deg: cos x= cos 2x

blsea [12.9K]

Answer:

$x=0^\circ,120^\circ,240^\circ,360^\circ$

Step-by-step explanation:

<u>Use identities to set the equation up as a quadratic</u>

$\cos x=\cos 2x;\:0^\circ \leq x \leq 360^\circ\\\\\cos x=2\cos^2 x-1\\\\0=2\cos^2 x-\cos x-1$

<u>Make the substitution u=cos(x) and solve the quadratic</u>

<u /> $0=2u^2-u-1\\\\0=(2u+1)(u-1)$

$\displaystyle 0=2u+1\\\\0=2\cos x+1\\\\-1=2\cos x\\\\-\frac{1}{2}=\cos x\\\\120^\circ,240^\circ=x$

$0=u-1\\\\0=\cos x-1\\\\1=\cos x\\\\0^\circ,360^\circ=x$

Hence, $x=0^\circ,120^\circ,240^\circ,360^\circ$

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1 year ago