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3 years ago

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Nicholas bought three business related books. His total bill was $150. If one book cost him 50% more than the other two books co

mbined what was the price of this more expensive book? $80.00 $85.00 $90.00 $95.00 $100.00

1 answer:

murzikaleks [220]3 years ago

5 0

First you need to find the middle number, wich is 75. Since there is no $75, I would go with $80.

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Please please help, need this done by 1:45!!!!

GarryVolchara [31]

Answer:

option B. MB/AM=NC/AN

Step-by-step explanation:

we know that

The <u><em>Triangle Proportionality Theorem</em></u> states that if a line is parallel to one side of a triangle and it intersects the other two sides, then it divides those sides proportionally

In this problem

MN is parallel to BC

MN intersect AC and divide into AN and NC

MN intersect AB and divide into AM and MB

so

Applying the Triangle Proportionality Theorem

$\frac{AN}{NC}=\frac{AM}{MB}$

Rewrite

$\frac{MB}{AM}=\frac{NC}{AN}$

7 0

3 years ago

An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.

Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder 1 2 3 4

Observed visits; $o_i$ 60 90 92 58

data sample = 300

Expected $e_i$ = 300 / 4 = 75

the x² test statistic = ?

$X^2_{stat$ = ∑[ ( $o_i$ - $e_i$ )²/ $e_i$ ]

$X^2_{stat$ = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

$X^2_{stat$ = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

$X^2_{stat$ = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0

2 years ago

If f(x) = x + 4 and g(x)=x^2-1, what is m(g o f)(x)?

Andreas93 [3]

Until now, given a function f(x), you would plug a number or another variable in for x. You could even get fancy and plug in an entire expression for x. For example, given f(x) = 2x + 3, you could find f(y2 – 1) by plugging y2 – 1 in for x to get f(y2 – 1) = 2(y2 – 1) + 3 = 2y2 – 2 + 3 = 2y2 + 1.

In function composition, you're plugging entire functions in for the x. In other words, you're always getting "fancy". But let's start simple. Instead of dealing with functions as formulas, let's deal with functions as sets of (x, y) points:

Let f = {(–2, 3), (–1, 1), (0, 0), (1, –1), (2, –3)} and

let g = {(–3, 1), (–1, –2), (0, 2), (2, 2), (3, 1)}.

Find (i) f (1), (ii) g(–1), and (iii) (g o f )(1).

(i) This type of exercise is meant to emphasize that the (x, y) points are really (x, f (x)) points. To find f (1), I need to find the (x, y) point in the set of (x, f (x)) points that has a first coordinate of x = 1. Then f (1) is the y-value of that point. In this case, the point with x = 1 is (1, –1), so:

8 0

3 years ago

Read 2 more answers

Not very good at geometry

FromTheMoon [43]

It's B - 1/√3
because tan is opposite side over adjacent

6 0

3 years ago

If 25% of a number is 65 and 60% of the same number is 156, find 35% of that number.

Goshia [24]

Answer:

35% of that number is 91.

Step-by-step explanation:

we need to first find 25% of what number equals 65.

65×100÷25 = 260

Then, if you use the same method again, 60% of 260 would be 156.

We know "that" number is 260, and all we need to do is find 35% of it.

35% of 260 = 91

Hope this helped :)

8 0

3 years ago