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I am Lyosha [343]
3 years ago
15

Eighteen students decide they don't want to be

Mathematics
2 answers:
Ratling [72]3 years ago
6 0

Answer: 45

Step-by-step explanation:

18 = 40% N

18 = 0.4 N

Divide both sides by 0.4

N = 45

coldgirl [10]3 years ago
3 0
So if they don’t want to be rescued then you do simple math with the percents and get 45
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Which function has an inverse that is a function?
shusha [124]

Answer:

  C.  -7x

Step-by-step explanation:

Only one of the offered choices passes the horizontal line test: at most one point of intersection with any horizontal line.

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A: a parabola opening upward, so will have two points of intersection with a general horizontal line (only one at the vertex).

B: a horizontal line, so will have an infinite number of points of intersection with a horizontal line.

D. A "V-shaped" graph that will generally have two points of intersection with a horizontal line (only one at the vertex).

7 0
3 years ago
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Answer:

b

Step-by-step explanation:

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6 0
3 years ago
A, B & C lie on a straight line.
Liono4ka [1.6K]

Answer:

x = 129°

Step-by-step explanation:

∠ ABD and ∠ DBC are a linear pair and sum to 180° , then

y + ∠ DBC = 180°

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8 0
2 years ago
If y= -3x7+2x3+ x, the derivative of y with respect to x is
larisa [96]

Answer:

\frac{dy}{dx} = - 21x^{6} + 6x² + 1

Step-by-step explanation:

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\frac{d}{dx} (ax^{n} ) = nax^{n-1}

Given

y = - 3x^{7} + 2x³ + x , then

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8 0
3 years ago
Ruben is buying bricks for a project. He knows that 5 bricks weigh 26 pounds. He wants
Nostrana [21]

Answer:

The weight of 24 bricks is 124.8  theoretical probability pounds

Step-by-step explanation:

26/5=5.2

24x5.2=124.8

3 0
3 years ago
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