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3 years ago

You read a novel over 7 days.

Mathematics

1 answer:

Bond [772]3 years ago

6 0

Answer:

23.7

Step-by-step explanation:

sum of pages divided by number of days spent

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the ratio of females to total students in a math class is 18 to 30 what fraction and percent of the class is female

Maksim231197 [3]

Add up 18 and 30. You'll get 48. Then 18/48 of the class is female. Of course this could be simplified: 18/48 = 3/8. Then 3/8 of the class is female and 5/8 is male.

5 0

4 years ago

A quadratic function, f(x) = x2 + bx + 9, is such that there is only one real root. Which of the following are possible values o

natita [175]

Answer:

Step-by-step explanation:

Remember that we can use the discriminant to determine the amount of roots that a quadratic function has.

If the determinant equals 0, then we only have one real root.

Our function is given by:

$f(x)=x^2+bx+9$

Then the discriminant will be:

$\Delta = b^2-4(1)(9)=b^2-36$

We only have one real root, thus our discriminant must be 0:

$0=b^2-36$

Solve for b:

$b^2=36$

Thus:

$b=\pm 6$

The answer is both II and III.

The final answer, then, is C.

7 0

3 years ago

Sam rolls a fair dice and flips a fair coin.

wolverine [178]

Answer:

The probability that this occurs is 25%, as 3/6 (chance to roll an odd number) multiplied by 1/2 (chance to flip a head) is .25.

Step-by-step explanation:

8 0

3 years ago

WILL GIVE BRAINLIEST!!!!!!

xeze [42]

Answer:

½ ; intercepted

Step-by-step explanation:

7 0

3 years ago

The following set of coordinates most specifically represents which figure? (−5, 6), (−1, 8), (3, 6), (−1, 4) (6 points) Paralle

Vladimir [108]

Answer:

Rhombus

Step-by-step explanation:

The given points are A(−5, 6), B(−1, 8), C(3, 6), D(−1, 4).

We use the distance formula to find the length of AB.

$|AB|=\sqrt{(-1--5)^2+(8-6)^2}$

$|AB|=\sqrt{16+4}$

$|AB|=\sqrt{20}$

The length of AD is

$|AD|=\sqrt{(-1--5)^2+(6-4)^2}$

$|AD|=\sqrt{16+4}$

$|AD|=\sqrt{20}$

The length of BC is:

$|BC|=\sqrt{(-1-3)^2+(8-6)^2}$

$|BC|=\sqrt{16+4}$

$|BC|=\sqrt{20}$

The length of CD is

$|CD|=\sqrt{(-1-3)^2+(6-4)^2}$

$|CD|=\sqrt{16+4}$

$|CD|=\sqrt{20}$

Since all sides are congruent the quadrilateral could be a rhombus or a square.

Slope of AB $=\frac{8-6}{-1--5}=\frac{1}{2}$

Slope of BC $=\frac{8-6}{-1-3}=-\frac{1}{2}$

Since the slopes of the adjacent sides are not negative reciprocals of each other, the quadrilateral cannot be a square. It is a rhombus

7 0

3 years ago

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