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3 years ago

Please help me with number two and three :)

Mathematics

1 answer:

Blababa [14]3 years ago

8 0

The answer to number 2 is:A as there is 1 pear for every three apples and
The answer to number 3: C. Since it also equals 0.6 which is the number eight games won in the first row divided by the number of games played in the first row

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A patient is to receive 2.6 grams of medication. The medication is available in capsules of 325 milligrams. How many capsules sh

sesenic [268]

2.6 gr = 2,600 mgr
2,600 mgr /325=8
Answer is 8 capsules

8 0

3 years ago

James wants to construct a regular hexagon inscribe in a circle with center O and diameter PQ

Brums [2.3K]

Answer:

B. Place the compass at P and draw an arc of length OP across the circle.

Below is the diagram for help.

Step-by-step explanation:

We are given with an already constructed circle of diameter $PQ$ and $OP$ as radius.

To draw a regular hexagon(six-sided), we need to make first cut on the circle of an arc equal to radius of the circle taking any point of the diameter as center

So here, We will consider $P$ as a center and take an arc of length $OP$ and make a cut on the circle.

This would be the first step and James need to repeat the same steps by considering the newly formed cut as center each time.

6 0

4 years ago

Help! Algebra!!!

balandron [24]

Thet contradict each other, that's why both of them are incorrect.
Suppose that a polynomial has four roots: s, t, u, and v. If the polynomial were evaluated at any of these values, it would have to be zero. Therefore, the polynomial can be written in this form.

p(x)(x - s)(x - t)(x - u)(x - v), where p(x) is some non-zero polynomial

This polynomial has a degree of at least 4. It therefore cannot be cubic.

Now prove Kelsey correct. We have already proved that there can be no more than three roots. To prove that a cubic polynomial with three roots is possible, all we have to do is offer a single example of that. This one will do.

(x - 1)(x - 2)(x - 3)

This is a cubic polynomial with three roots, and four or more roots are not possible for a cubic polynomial. Kelsey is correct.

Incidentally, if this is a roller coaster we are discussing, then a cubic polynomial is not such a good idea, either for a vertical curve or a horizontal curve. I hope this helps

4 0

3 years ago

Which of the following pairs of events are mutually exclusive? Rolling a die; A={Rolling an even number}, B={Rolling a number gr

choli [55]

Answer:

Tossing a coin twice; A ={no Heads}, B={at least 1 Head}

Step-by-step explanation:

Mutually exclusive:

If two events are mutually exclusive, if one events happen, the other cannot happen, and vice-versa.

Rolling a die; A={Rolling an even number}, B={Rolling a number greater than 4}

A die has the following outcomes: 1,2,3,4,5,6

Even numbers: 2,4,6

Greater than 4: 5, 6

6 is an outcome of both events A and B, so they are not mutually exclusive.

Picking a card; A= {Selecting a 7}, B={Selecting a Heart}

Cards numbered from 1 to 13, each number with 4 types. So we can have a card of hearts numbered 7, which means that these events are not mutually exclusive.

Tossing a coin twice; A ={no Heads}, B={at least 1 Head}

If you get no heads, the probability of at least 1 head is 0.

If you get at least 1 head, the probability of no heads is 0.

This means that this is the answer, that is, these events are mutually exclusive.

Rolling two 6-sided dice; A={rolling a sum of 4}, B={rolling a 3 on one die}

(3,1) or (1,3) has a sum of 4 and a 3 on one die, which means that these events are not mutually exclusive.

6 0

3 years ago

i beg please help worth 40 points and ill give brainliest if answered right with shown work please help

lisabon 2012 [21]

y = 2x

x + y = 6

3x = 6

x= 2

y = 4

y = 2x - 5

x + y = 4

x + 2x - 5 = 4

x + 2x = 9

3x = 9

x = 3

y = 1

x + y = 7

2x - y = 5

x = 7 - y

2x = 14 - 2y

14 - 2y - y = 5

- 9 = - 3y

3y = 9

y = 3

x = 4

x + 9y = - 6

2x - 9y = 15

9y = 2x - 15

x + 2x - 15 = - 6

3x = 9

x = 3

y = - 1

x + 2y = 4

y = 2x + 7

2y = 4x + 14

x + 4x + 14 = 4

5x = - 10

x = - 2

y = 3

x - 4y = 16

y = 1 - x

4y = 4 - 4x

x - 4 + 4x = 16

5x = 20

x = 4

y = -3

4x - y = 10

x + y = 5

y = 4x - 10

x + 4x - 10 = 5

5x = 15

x=3

y = 2

2x + y = 10

3x = y

y = 10 - 2x

10 - 2x = 3x

10 = 5x

x = 2

y = 6

-5x - y = 20

y = 3x

y = - 5x - 20

-5x - 20 = 3x

8x = - 20

2x = - 5

x = - 2.5

y = - 7.5

10:

2x - y = -1

x = 17 - 3y

y = 2x + 1

3y = 6x + 3

17 - 6x - 3 = x

14 = 7x

x = 2

y = 3

11:

3x + y = 3

y = 2x - 7

y = 3 - 3x

3 - 3x = 2x - 7

10 = 5x

x = 2

y = - 3

12:

2x + 3y = 17

3x - 2y = - 0.5

2y = 3x + .5

y = 1.5x + .25

3y = 4.5x + .75

2x + 4.5x + .75 = 17

16.25 = 6.5x

16.25 / 6.5 = x

x = 2.5

y = 4

13:

x - 2y = 5

3x + 2y = 23

3x = 15 + 6y

15 + 6y + 2y = 23

8 = 8y

x = 7

y = 1

14:

2x = 5y + 8

3x + 2y = 31

x = 2.5y + 4

3x = 7.5y + 12

7.5y + 12 + 2y = 31

9.5y = 19

y = 19 / 9.5

x = 9

y = 2

took a lot of time so please give brainliest

6 0

2 years ago