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4 years ago

7

A school librarian is purchasing books for the next school year. She surveyed 25 students and 6 said that they prefer science fi

ction books. If there are 125 total students, how many science fiction books should be purchased.

1 answer:

Svetlanka [38]4 years ago

5 0

Answer:

30 science fiction books

Step-by-step explanation:

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Someone please help me?

Anna35 [415]

Answer:

43

Step-by-step explanation:

80-37 = 43

7 0

2 years ago

If ƒ(x) = 2x² + 3, then which of the following represent ƒ(x + 1)?

Oliga [24]

This is a bit harder. I suggest getting the Domain and Range for the function of x.
If any of these answers have, an infinite domain and (3, infinite) range. That will be your answer.

Your answer is B.

f(x) = 2x²+3 has the same domain and range as x²+3

3 0

3 years ago

2. Multiply and simplify: (x - 2)(2x + 3)<br> Answer

inysia [295]

Step-by-step explanation:

(x - 2)(2x + 3)

=2x²+3x-4x-6

=2x²-x-6

8 0

3 years ago

Read 2 more answers

Describe the motion of a particle with position (x, y) as t varies in the given interval. (For each answer, enter an ordered pai

DerKrebs [107]

Answer:

The motion of the particle describes an ellipse.

Step-by-step explanation:

The characteristics of the motion of the particle is derived by eliminating $t$ in the parametric expressions. Since both expressions are based on trigonometric functions, we proceed to use the following trigonometric identity:

$\cos^{2} t + \sin^{2} t = 1$ (1)

Where:

$\cos t = \frac{y-3}{2}$ (2)

$\sin t = x - 1$ (3)

By (2) and (3) in (1):

$\left(\frac{y-3}{2} \right)^{2} + (x-1)^{2} = 1$

$\frac{(x-1)^{2}}{1}+\frac{(y-3)^{2}}{4} = 1$ (4)

The motion of the particle describes an ellipse.

7 0

3 years ago

Ms. Johnson's class completed 28,985 math problems in 85 weeks. There are 32 problems on each worksheet she gives out. How many

Hitman42 [59]

It's 292.5 problems per week

7 0

3 years ago

Read 2 more answers