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3 years ago

(Trigonometry question)

Mathematics

2 answers:

alexandr1967 [171]3 years ago

8 0

Answer:

is the answer 7/25 ? i got 7/25

kaheart [24]3 years ago

8 0

Answer:

7/25 is the answer

Step-by-step explanation:

sin ○ = opp/ hyp

sin ○ = 7 /25

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Solve 5x<-10<br><br> help plz

dimaraw [331]

Hello,

To solve this equation, you divide both sides by 5.
This will give you x < -2.

I hope this helps!
Mr.EQ

4 0

3 years ago

What is the product of (3a + 2)(4a2 – 2a + 9)?

nydimaria [60]

Answer:

12a^3 + 2a^2 + 23a + 18

Step-by-step explanation:

Please use the " ^ " symbol to represent exponentiation: 4a^2 – 2a + 9.

Now carry out the multiplication as follows:

First, multiply each term in 4a^2 – 2a + 9 by 3a: 12a^3 - 6a^2 + 27a.

Next, multiply each term in 4a^2 – 2a + 9 by 2: 8a^ 2 - 4a + 18.

Now combine like terms:

12a^3 - 6a^2 + 27a

8a^ 2 - 4a + 18

---------------------------------

12a^3 + 2a^2 + 23a + 18

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3 years ago

Which angle in DEF has the largest measures ?

Digiron [165]

F
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3 years ago

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Which relationships describe the angle pair x° and 71º?

Svetach [21]

the answers are:

complementary angles & adjacent angles

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4 years ago

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What is the explicit formula for this sequence?

ddd [48]

Answer:

$a_n=-7+4(n-1)$

$a_n=-7+(n-1)(4)$

Step-by-step explanation:

-7,-3,1,5,... is a arithmetic sequence.

Arithmetic sequences have a common difference. That is, it is going up by 4 each time.

When you see arithmetic sequence, you should think linear equation.

The point-slope form of a line is $y-y_1=m(x-x_1)$ .

m is the common difference, the slope.

Any they are using the point at x=1 in the point slope form. So they are using (1,-7).

So let's put this into our point-slope form:

$y-(-7)=4(x-1)$

$y+7=4(x-1)$

Subtract 7 on both sides:

$y=-7+4(x-1)$

So your answer is

$a_n=-7+4(n-1)$

6 0

4 years ago