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drek231 [11]
2 years ago
10

Can someone help with this?

Mathematics
1 answer:
valina [46]2 years ago
7 0

Answer:

(a) is 8 x 7 x 3 = 168

(b) is 8 x 7 = 56

(b2) is weird I don't know what it's asking

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Find the exact value of sin(255∘)
Masteriza [31]

Check the picture below.

\textit{Sum and Difference Identities} \\\\ sin(\alpha + \beta)=sin(\alpha)cos(\beta) + cos(\alpha)sin(\beta) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ sin(255^o)\implies sin(135^o+120^o) \\\\\\ sin(135^o)cos(120^o)~~ + ~~cos(135^o)sin(120^o) \\\\\\ \left( \cfrac{\sqrt{2}}{2} \right)\left( -\cfrac{1}{2} \right)~~ + ~~\left( -\cfrac{\sqrt{2}}{2} \right)\left( \cfrac{\sqrt{3}}{2} \right)\implies -\cfrac{\sqrt{2}}{4}~~ - ~~\cfrac{\sqrt{6}}{4}\implies \cfrac{-2-\sqrt{6}}{4}

5 0
2 years ago
What is the inverse of the function 9y - 6 = 3x ?
IgorC [24]

Answer:

Option (2)

Step-by-step explanation:

Given function is,

9y - 6 = 3x

y = \frac{3x+6}{9}

To find the inverse of the given function,

1). Substitute x in place of y and y in place of x.

x = \frac{3y+6}{9}

2). Now we have to solve this equation for the value of y.

9x = 3y + 6

3y = 9x - 6

y = (3x - 2)

Therefore, inverse of the given function is y = (3x - 2)

Option (2) will be the answer.

8 0
3 years ago
If you answer this you cool but still PLEASEE HELPP
defon
Its D

Because the rate of change is 1.5 and 1.5x10 is 15
5 0
3 years ago
Giving brainliest for correct awnser. Factor the expression below. <br>​
tresset_1 [31]

Answer:

B. (x + 3) (x + 27)

Step-by-step explanation:

<em><u>To factor the expression, you must split the middle term (18x) into two terms that can be added to get 18, and multiplied to get 81:</u></em>

<em><u /></em>x^2 + 18x + 81

x^2 +3x + 27x + 81

<em><u>Group:</u></em>

<em><u /></em>(x^2 +3x) (27x + 81)

<em><u>Take out GCF (Greates Common Factor):</u></em>

x(x + 3) 27(x + 3)

(x + 27) (x + 3)

8 0
3 years ago
Match the vocabulary word with its definition.
Alexxx [7]
1. Intersection
2. complement
3. Union
4. finite set
5. disjoint sets
6. proper subset
7. subset
7 0
3 years ago
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