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const2013 [10]
3 years ago
5

I NEED AN EXPLANATION PLEASE!! I need a fast answer

Mathematics
2 answers:
mestny [16]3 years ago
8 0

Answer:

i think B which is 74

Step-by-step explanation:

coldgirl [10]3 years ago
4 0

Answer:

B) 74 degrees

Step-by-step explanation:

three angles = 180

2x+32=180

2x=148

x=74

Hope this helps plz hit the crown :D

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What's the answer? (ANSWERS IN 2ND PHOTO)
34kurt
3x^7/10
hope this helps :)
8 0
3 years ago
What is the length (magnitude) of the vector (7, -2)?
Sedbober [7]

Answer: B

Step-by-step explanation:

I just got it right on A P E X

have a good day

4 0
2 years ago
Read 2 more answers
The equations : -3x+4y=-30− and 9x + 5 y = 39 intersect at the coordinate (h, k). What is the value of h?
Phantasy [73]

Answer:

h = 6

Step-by-step explanation:

Given the 2 equations

- 3x + 4y = - 30 → (1)

9x + 5y = 39 → (2)

We require the value of the x- coordinate at the point of intersection, thus require to eliminate the y- term from the equations

Multiply (1) by 5 and (2) by - 4

- 15x + 20y = - 150 → (3)

- 36x - 20y = - 156 → (4)

Add (3) and (4) term by term thus eliminating y

- 51x = - 306 ( divide both sides by - 51 )

x = h = 6

5 0
3 years ago
What is the value of -4° + (5-2)(-6)?
34kurt

Answer:

-22

Step-by-step explanation:

Due to order of operations rules, we must perform the subtraction inside parentheses first, getting:

-4 +(3)(-6)

Multiplication comes next:  

-4 - 18

and the total value is thus -22.

8 0
3 years ago
For what values of k
sergey [27]

If y = cos(kt), then its first two derivatives are

y' = -k sin(kt)

y'' = -k² cos(kt)

Substituting y and y'' into 49y'' = -16y gives

-49k² cos(kt) = -15 cos(kt)

⇒   49k² = 15

⇒   k² = 15/49

⇒   k = ±√15/7

Note that both values of k give the same solution y = cos(√15/7 t) since cosine is even.

3 0
2 years ago
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