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3 years ago

Simplify the following: (3i-3)(3i+3) and (4i+7)(-6i+20)

Mathematics

1 answer:

zavuch27 [327]3 years ago

4 0

Answer:
1. -18
2. 164+38i

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Write 23 hundredths in scientific notation

Dmitry [639]

Answer:

Step-by-step explanation:

23 hundredths = 0.23 = 2.3 * 10⁻¹

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4 years ago

Paolo is using his grandmother’s cookie recipe. He always doubles the amount of chocolate chips and oats. The recipe calls for 2

lesya692 [45]

Answer:

6 1/3 divided by 2 1/2 = x

Step-by-step explanation:

Hope this helps.

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3 years ago

Solve for x? 5×-6=4×+8

Mandarinka [93]

Answer:

x=14

Step-by-step explanation:

First bring the 6 to the other side and then bring the 4x to the other side to have 5x-4x=6+8 and combine the like terms and x equals 14.

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4 years ago

Read 2 more answers

If you know trig please help! Will give brainliest!

kaheart [24]

Answer:

sin^2α

Step-by-step explanation:

I will just pose x instead of alpha here to make things simpler

$\tan ^2\left(x\right)\left(2\cos ^2\left(x\right)+\sin ^2\left(x\right)-1\right)\\\\$

we know that sin^2x = 1 - cos^2x so...

$=\left(-1+1-\cos ^2\left(x\right)+2\cos ^2\left(x\right)\right)\tan ^2\left(x\right)$

$=\cos ^2\left(x\right)\tan ^2\left(x\right)$

we can rewrite using trigonometric identities (tan = sin/cos)...

$=\left(\frac{\sin \left(x\right)}{\cos \left(x\right)}\right)^2\cos ^2\left(x\right)\\= \sin ^2\left(x\right)$

6 0

3 years ago

Need helpppppp<br> plz and thank u

sdas [7]

5-1/10

Step-by-step explanation:

4-1/2+3/5=

9/2 + 3/5=

45/10+6/10=51/10=5-1/10

8 0

3 years ago