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Artemon [7]
3 years ago
8

Use​ Gauss's approach to find the following sums​ (do not use​ formulas). a. 1+2+3+4+...+98

Mathematics
1 answer:
Blababa [14]3 years ago
6 0
Here ya go im 90% sure this is the right answer enjoy!

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Find the coordinates of the vertices of the figure formed by each system of inequalities. x + y < 9 x - 2y < 12 y < 2x
Vladimir [108]

Answer:

b. (10, -1), (-6, -9), (2, 7)

Step-by-step explanation:

One way to solve this problem is by graphing (see attachment). In fact, that actually is the easiest way to do this.

First, graph x + y < 9 (red part on the attachment). To do this, isolate the y so that it's like a regular linear equation: y < -x + 9. Graph the line y = -x + 9 first, and then choose a point either on the left or right of the line to plug in for x and y.

Let's just choose (0, 0), which is on the left of the line: 0 < -0 + 9  ⇒  0 < 9. Since this is a true statement, we know that we should shade the left side of the equation, and not the right side.

Now, graph x - 2y < 12 (blue part on the attachment). It's the same process here as the first inequality. For this one, we find that we also shade to the "left" of the line (it's more "up" than "left", but you get the idea).

Finally, graph y < 2x + 3 (green part on the attachment). Again, it's the same process. For this, we shade to the right.

Now look at the three points that they intersect at: they are (2, 7), (-6, -9), and (10, -1). The answer is thus B.

7 0
3 years ago
Read 2 more answers
Melissa collected data from a group of people regarding whether or not they prefer turkey or ham and whether or not they prefer
dedylja [7]

Answer:

I’m pretty sure it’s B)- Z

Step-by-step explanation:

18. The correct table must display the following information.

38% prefer turkey with mayonnaise 20% prefer turkey with mustard 24% prefer ham with mayonnaise 18% prefer ham with mustard

In tables Z and W, each table totals 50 people.

To find the relative frequencies of the data in these tables, divide each number in the table by 50.

In tables X and Y, each table totals 100 people.

To find the relative frequencies of the data in these tables, divide each number in the table by 100.

The only table which is a possible representation of the data collected is table Z.

Likes Baseball

Does Not Like Baseball

Total

Likes Football Does Not Total Like Football

0.50 0.64 0.54

0.50 0.36 0.46 1.00 1.00 1.00

Mayonnaise Mustard

Total

Turkey

19 ÷ 50 = 0.38

10 ÷ 50 = 0.20

29 ÷ 50 = 0.58

Ham

12 ÷ 50 = 0.24

9 ÷ 50 = 0.18

21 ÷ 50 = 0.42

Total

31 ÷ 50 = 0.62

19 ÷ 50 = 0.38

50 ÷ 50 =1.00

3 0
3 years ago
Please solve this question
lianna [129]

Answer:

C

Step-by-step explanation:

Since its a perfecr square root

8 0
2 years ago
5/8 plus 1/16 simplified
Mariana [72]
We want to make their denominators the same to add them, their common denominator is 16
So 5/8 will become 10/16
now we can add both fractions easily
10/16 + 1/16 = 11/16
4 0
3 years ago
What’s the inverse of this function?
sergejj [24]

Answer:

Step-by-step explanation:

First replace f(x) with y

y=-2x+2

Then switch the variables

x=-2y+2

Solve for the new y value

x-2=-2y\\

-\frac{x-2}{2} =y

3 0
3 years ago
Read 2 more answers
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