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3 years ago

Which equations are true for the values of x, y, and z in the figure? Select all that apply.

Mathematics

1 answer:

NeTakaya3 years ago

6 0

X + 105 = 180
x= z (congruent)
180-z =y

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Three friends bought ¼ kg of trail mix to share. How many kg will each friend receive?

Irina18 [472]

Answer:

1/12 kg

Step-by-step explanation:

1/4(1/3)=1/12

5 0

3 years ago

Use the power-reducing formulas to rewrite the expression in terms of first powers of the cosines of multiple angles.

Veseljchak [2.6K]

This is the same question as 17042785 (the question number in the site URL), with the exception of using the other identity,

$\sin^2x=\dfrac{1-\cos(2x)}2$

We have

$2\sin^4(2x)=2(\sin^2(2x))^2=2\left(\dfrac{1-\cos(4x)}2\right)^2=\dfrac12(1-\cos(4x))^2$

Expand the binomial:

$2\sin^4(2x)=\dfrac12(1-2\cos(4x)+\cos^2(4x))$

Using the identity in the previous question,

$\cos^2x=\dfrac{1+\cos(2x)}2$

we get

$\cos^2(4x)=\dfrac{1+\cos(8x)}2$

So,

$2\sin^4(2x)=\dfrac12\left(1-2\cos(4x)+\dfrac{1+\cos(8x)}2\right)$

$2\sin^4(2x)=\dfrac14\left(3-4\cos(4x)+\cos(8x)\right)$

3 0

3 years ago

Find each missing length, make sure you give both exact AND approximate. Brainliest + 50pts

goldenfox [79]

B²=15²-7²
B²=225-49
B²=176
B=13.26(exact)
B=13.3(approx)

B²=17²-7²
B²=289-49
B²=240
B=15.49(exact)
B=15.5

H²=20²+14²
H²=400+196
H²=596
H=24.41(approx)
H=24.4(exact)

B²=6²-3²
B²=36-9
B²=27
B=5.196(exact)
B=5.2(approx)

3 0

3 years ago

Plz help will be marked BRAINLIEST

juin [17]

Answer:

Because x=4

Step-by-step explanation:

Darius wrote 8=2x because x=4.

Hope this helps!

8 0

3 years ago

Read 2 more answers

Which situation about Sam's money could be described using the sum of -2.5 and -10?

satela [25.4K]

Answer

C. Sam owes his dad $7.50

Step-by-step explanation:

because none are correct but tat is te closetes one

6 0

3 years ago