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xz_007 [3.2K]
3 years ago
12

Please help i don’t understand

Mathematics
1 answer:
olganol [36]3 years ago
5 0

9514 1404 393

Answer:

  3

Step-by-step explanation:

Vertical angles share a vertex point, and have opposite rays for sides. In short, they are across the point of intersection from each other. Vertical angles do not have a common side (they are <em>not</em> adjacent).

The first part of the problem is to identify angle NCA. That is shown in red in the attachment. The vertical angle is across the point of intersection. It is angle 3.

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What's the question? The estimated product of two numbers that are not multiples of 10 is 2800.
Neporo4naja [7]

Seems to me like the question is:  What are the two numbers ?

They have to multiply to  2,800 . 
It's fairly easy to find two numbers that do that,  BUT ...
they're not supposed to be multiples of 10 .

1 x 2,800 = 2,800 . . . . . No good.  2,800 is a multiple of 10 .

2 x 1,400 = 2,800 . . . . . No good.  1,400 is a multiple of 10 .

4 x 700 = 2,800 . . . . . No good.  700 is a multiple of 10 .

5 x 560 = 2,800 . . . . . No good.  560 is a multiple of 10 .

7 x 400 = 2,800 . . . . . No good.  400 is a multiple of 10 .

8 x 350 = 2,800 . . . . . No good.  350 is a multiple of 10 .

10 x 280 = 2,800 . . . . . No good.  280 is a multiple of 10 .

14 x 200 = 2,800 . . . . . No good.  200 is a multiple of 10 .

16 x 175 = 2,800 . . . . . Finally !  Neither one is a multiple of 10 .

6 0
3 years ago
Evaluate 9.3s+8.9t when s=3 and t=4
USPshnik [31]

Answer:

63.5

Step-by-step explanation:

9.3(3)+8.9(4) = 63.5

substitute the values (s and t) with the given numbers (3 and 4.)

8 0
3 years ago
Read 2 more answers
(5 points)
artcher [175]
2,-2 because it goes by the coordinate x,y.
7 0
3 years ago
Solve the system of equations using the linear combination method. {c+d=17c−d=3 Enter your answers in the boxes
Natalija [7]

Solving the system of equations, we get value of c= 10 and value of d= 7

Step-by-step explanation:

Solving the system of equations:

c+d=17\\c-d=3

Let:

c+d=17\,\,\,eq(1)\\c-d=3\,\,\,eq(2)

Adding eq(1) and eq(2)

c+d=17\\c-d=3\\------\\2c+0d=20\\c=20/2\\c=10

So, value of c = 10

Now putting value of c in equation 1 to find value of y

c+d=17\\10+d=17\\d=17-10\\d=7

So, value of d =7

Solving the system of equations, we get value of c= 10 and value of d= 7

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

8 0
4 years ago
Please help! I’m kinda stuck on these type of questions so an explanation would help too!
inna [77]

Answer:

a. 49

Step-by-step explanation:

so, basically turn the equation around! -15+64.  because -15 is in parentheses, we know that it is negative, but another way you can do it is to take away the addition symbol and just use the negative as a subtraction one.  so you could do 64-15 and you get 49.  for b it's a little different, two negative cancel each other out so because there's a subtraction sign after 18 and there's a  negative sign before 55 you can see that to simplify the equation it would be -18+55 or again 55-18.  for c I think that one is pretty simple, just do 92-86 (I don't know if you see the pattern yet but most times you can just flip it around.) and for d you can do 17 plus 44 and then make the solution negative.  I hope this helped a little!!

7 0
1 year ago
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