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sveticcg [70]
3 years ago
15

PLEASE HALP!!!!

Mathematics
2 answers:
ryzh [129]3 years ago
8 0

Answer:

B. 84

 (85+89+90+82+x)/5=86

so x=84

Scilla [17]3 years ago
5 0

Answer:

The answer is B

Step-by-step explanation:

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State whether the indicated angle pairs are adjacent or not. An explanation would be nice, but you don't have to.
Valentin [98]

1. Yes, angles a and b have a common vertex (starting point) and a common side (the line between angle a and b). They do not overlap.

2. No, angles a and b share a common vertex but not a common side.

3. No. Same as above.

4. Yes, anlges a and b share a common vertex and side.

6 0
3 years ago
Write an equation of a parabola with the given vertex and focus.<br> vertex (-1,3); focus (-1,4)
NeX [460]

See https://web2.0calc.com/questions/i-need-help_4982.

6 0
3 years ago
Two gears in a machine are aligned by a mark drawn from the center of one gear to the center of the other. If the first gear has
Aleksandr [31]

Answer:

5

Step-by-step explanation:

for the first gear

revolutions/teeth

1 / 24

2 / 48

3 / 72

4 / 96

5 / 120

6 / 144

for the second gear

revolutions/teeth

1 / 40

2 / 80

3 / 120

4 / 160

<em>the two marks will meet after 120 teeth, 5 revolutions of the first gear and 3 revolutions of the second.</em>

the way to get that amount of teeth is

24 = 2 \times 2 \times 2 \times 3 =  {2}^{3}  \times 3

40 = 2 \times 2 \times 2 \times 5 =   {2}^{3}  \times 5

the Least Common Multiple equals the product of all factors, but those factors who are repeted for both numbers should be only once.

{2}^{3} \times 5 \times 3 = 120

120 teeth are 5 revolutions for gear1 and 3 por gear2

8 0
3 years ago
3. The cost(P) in Ghana Ghana Cedis, of producing n items is given by the formula, P=3/4n + 1800. a. Find the cost of producing
ArbitrLikvidat [17]

Answer:

3300 Ghana cedis

Step-by-step explanation:

There are 2000 items, so n = 2000

P = 3/4 * 2000 + 1800 = 1500 + 1800 = 3300 Ghana cedis

6 0
3 years ago
What is the value of the function at x = 3?<br><br> Enter your answer in the box.
butalik [34]

Answer:

4

Step-by-step explanation:

Recall a linear function, is a line on a graph made up of an infinite amount of points which satisfy the relationship. That means at x=3 there is a specific point on the line with an output. The value of a function at x=3 asks, what is the output y value for the input x value?

To find it, we locate 3 on the x-axis. We draw a vertical line directly to the line following the grid line. We mark the point on the line. We then draw a horizontal line directly to the y-axis following the grid line. The point we hit on the y-axis is the value of the function.

Here it is 4.

3 0
3 years ago
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