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Llana [10]
3 years ago
15

Please help me with this​

Mathematics
1 answer:
Licemer1 [7]3 years ago
3 0

Answer:

`184.61

Step-by-step explanation:

i got this by dividing the 3000 by the price of 32.50 and then multiplying it by 2 to get the depth im not fully sure if this is correct but i tried and i hope this helps!

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The school that Billy Bob goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3
svp [43]

Answer:

if your looking for the ordered pair its 8,14....But if you looking for the answer for the prices it

for grandpa 8 dollars

For children 14 dollars

write

S8,C14

Step-by-step explanation:

Litterally the answer is the ordered pair and the answer is on the graph shown in the problem.

5 0
3 years ago
Let $a$ and $b$ be nonzero real numbers such that
algol [13]
<h3>Answer:   -7/2</h3>

=========================================================

Explanation:

Let's expand out (2 - 7i)(a + bi) using the FOIL rule

(2 - 7i)(a + bi) = 2a + 2bi - 7ai - 7bi^2

(2 - 7i)(a + bi) = 2a + 2bi - 7ai - 7b(-1)

(2 - 7i)(a + bi) = 2a + 2bi - 7ai + 7b

(2 - 7i)(a + bi) = (2a+7b) + (2bi-7ai)

(2 - 7i)(a + bi) = (2a+7b) + (2b-7a)i

We're told the result is purely imaginary. What this means is that the real part (2a+7b) is zero, while the imaginary part (2b-7a) is nonzero. If both are zero, then we have 0+0i = 0 which is purely real.

For example, the complex numbers 0-7i and 0+2i are purely imaginary.

Let's use the fact that 2a+7b must be zero to do the following steps:

2a+7b = 0

2a = -7b

a = -7b/2

a/b = -7/2 which is the final answer

We must check to see if 2b-7a is nonzero

2b - 7a = 2b - 7(-7b/2)

2b - 7a = 2b + 24.5b

2b - 7a = 26.5b

The result is nonzero if and only if b is nonzero. Luckily we're told b is nonzero at the top of the problem. So we don't have any worries that (2b-7a) is zero.

Therefore, (2a+7b) + (2b-7a)i will be purely imaginary with a/b = -7/2

------------------

A concrete example:

Let a = -14 and b = 4

a/b = -14/4 = -7/2

(2-7i)(a+bi) = (2-7i)(-14+4i) = 0 + 106i which is purely imaginary.

I'll let you do the steps in expanding that out using the FOIL rule.

4 0
1 year ago
A runner jogged 4 miles in ten laps around a circular
dybincka [34]

Answer:

.1273 mi = 627.2 feet

c = 2\pir

.4 = 2\pir

r = \frac{.4}{2\pi }

r = \frac{.2}{\pi }

d = \frac{.4}{\pi }

d = .1273 mi = 627.2 feet

Step-by-step explanation:

4 0
2 years ago
Five eighths of people you invite to a party show up, as do six people who were not directly invited. If a total of 41 people sh
denpristay [2]

Answer:

yebhrhrbrnrjjrjrjrhhthrjthhthththhththththhthrhththhtyhhrhrhrhhr

3 0
3 years ago
A bag of numbered lottery balls contains the numbers 1 through 40. What is the probability that a randomly selected ball will be
RoseWind [281]

Answer:

37/40

Step-by-step explanation:

There are 3 numbers between 1 and 40 that are a multiple of 13: 13,26,39.

So, your probability should be 40-3/40, = 37/40.

3 0
3 years ago
Read 2 more answers
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