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Hunter-Best [27]
3 years ago
10

If cos θ = -2/5 and tan θ > 0, what is the value of sin θ? Answer Choices: a) the negative square root of 21 b) the negative

square root of 21 over 5 c) the square root of 21 over 5 d) the square root of 21 over 2
Mathematics
1 answer:
padilas [110]3 years ago
5 0

Answer:

I think it is A

Step-by-step

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Please help me<br><br> no random links pls
GalinKa [24]

Answer:

C

Step-by-step explanation:

The first one (0,7) tells you that when x isn't there, the amount of money is 7.

That means that the y intercept is 7.

When x = 1 the total is 15

Money saved = ax + 7

15 = a*1 + 7                         Subtract 7

15-7 = a + 7-7

a = 8

The equation is f(x)  = 8x + 7

8 0
3 years ago
The area of two similar octagons are 4 m2 and 25 m2. What is the scale factor of their side lengths
mylen [45]

Answer:

The scale factor of the sides of the Octagon is 2:5

Step-by-step explanation:

Both these octagons can be considered as the combination of 8 similar triangles joined edge to edge.

We know this property of similar triangles, that the ratio of area of similar triangles is proportion to the square of the ratio of sides of the similar triangle.

Side_{1} ^{2} : Side_{2} ^{2} =Area_{1} : Area _{2}

From the above property, we plug in the values

Side_{1} ^{2} : Side_{2} ^{2} =4: 25

Side_{1}  : Side_{2}  =2: 5

Therefore, the ratio of the sides of the Octagon are 2:5.

7 0
3 years ago
A picture of parallel lines
cupoosta [38]
Parallel lines are two lines that are not crossing each other for instance \\ that is a parole line  

4 0
3 years ago
Read 2 more answers
Which line is parallel to the line that passes through the points (1, 7) and (-3, 4)?
Viktor [21]

Answer:

B

Step-by-step explanation:

The slope of the line that passes through the given points is (4-7)/(-3-1) = 3/4.

Since parallel lines have equivalent slopes, the answer is B.

5 0
2 years ago
Let y be the difference of two numbers such that one number varies directly as x while the other number varies inversely as x. I
Ostrovityanka [42]

Answer:

y is 5 units greater than x

Step-by-step explanation:

3 0
4 years ago
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