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shtirl [24]
3 years ago
8

The list of all factors for 21 is 1, 3, 7, and 21. True or False plz i need help

Mathematics
2 answers:
Verizon [17]3 years ago
6 0
I believe those are all the correct factors of 21, so the answer would be true. I hope this is correct! :)
antiseptic1488 [7]3 years ago
3 0

Answer:

true

Step-by-step explanation:

hope you have a wonderful new year

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Y= 5x + 13 <br> and<br> y= x + 45
arsen [322]

Answer:

x=8 and y=53

Step-by-step explanation:

Given function:

  • y=5x+13
  • y=x+45

Find x:

  • the two equation, the x and are breaked apart..
  • so find a number that they can both equal to together and has the same y.
  • multiply by 8..
  • 5·8=40
  • combine the terms for x and 13
  • 40+13=53
  • since x is 8 then if we add 8 with 45 it should be 53...
  • 8+45=53

y is:

  • this means that y=53.

Therefore, x=8 and y=53..

7 0
3 years ago
27. It costs $8.65 to ride the train. Ms. Reilly took
frozen [14]

Answer:$164.35

Step-by-step explanation:

You just multiply 19 × 8.65

6 0
3 years ago
Find the exact value of the trigonometric expression given that sin u = − 8 17 and cos v = − 24 25 . (Both u and v are in Quadra
Rashid [163]

Answer: sin u = -5/13 and cos v = -15/17

Step-by-step explanation:

The nice thing about trig, a little information goes a long way. That’s because there is a lot of geometry and structure in the subject. If I have sin u = opp/hyp, then I know opp is the opposite side from u, and the hypotenuse is hyp, and the adjacent side must fit the Pythagorean equation opp^2 + adj^2 = hyp^2.

So for u: (-5)^2 + adj^2 = 13^2, so with what you gave us (Quad 3),

==> adj of u = -12 therefore cos u = -12/13

Same argument for v: adj = -15,

opp^2 + (-15)^2 = 17^2 ==> opp = -8 therefore sin v = -8/17

The cosine rule for cos (u + v) = (cos u)(cos v) - (sin u)(sin v) and now we substitute: cos (u + v) = (-12/13)(-15/17) - (-5/13)(-8/17)

I am too lazy to do the remaining arithmetic, but I think we have created a way to approach all of the similar problems.

3 0
2 years ago
Help what is 1/3 to decimal
sleet_krkn [62]

Hey there! I'm happy to help!

To turn a fraction into a decimal, you simply divide the numerator by the denominator!

1÷3=0.3333333333.... (the 3s never end!)

Have a wonderful day! :D

4 0
3 years ago
6. You and your family went to a restaurant and the bill came to $120. You decide to
ivann1987 [24]

Answer:

c

Step-by-step explanation:

18 percent of 120 is 21.6

6 0
2 years ago
Read 2 more answers
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