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choli [55]
2 years ago
12

Evaluate. (jk−1)÷j when j=−4 and k=−0.7 Enter your answer as a decimal in the box.

Mathematics
1 answer:
Helga [31]2 years ago
5 0

Answer:

(jk - 1) / j

jk = (-4 x -0.7) = 2.8

(2.8 - 1) / - 4

1.8 / -4 = -0.45

Answer is -0.45 when j = -4 and k = -0.7

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group of 30 students from your school is part of the audience for a TV game show the total number of people in the audience is 1
Soloha48 [4]
<h2>Answer:</h2><h2>The theoretical probability of four students from your school being selected as contestants out of 8 possible contestants spots =  \frac{14}{165}</h2>

Step-by-step explanation:

The number of students participated  = 30

Total audience = 150

By probability , to find the solution = \frac{n(E)}{n(S)}  

where n(E) is the number of favorable outcomes,

n(S) is the number of total outcomes.

 n(S) is the number of ways any 8 students can by picked from the audience=  \frac{8}{140}

 n(E) is the probability of picking four students from our school and five students from another school.

n(E) = (\frac{4}{30}) (\frac{4}{110}) = \frac{16}{3300}

\frac{n(E)}{n(S)}  = \frac{\frac{16}{3300}}{\frac{8}{140}} = \frac{14}{165}

7 0
2 years ago
Find the surface area of this triangular prism
lidiya [134]

Answer:

To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of each triangle is equal to one-half the area of the parallelogram.

this will show u i searched it and wrote half in my words

6 0
2 years ago
Read 2 more answers
Find the value of x.​
Wittaler [7]
It’s 36 I looked it up and I did this before have a good day anything else?
3 0
2 years ago
A firm has a revenue function that can be represented by r (x)=700x-0.35x^2, where r (x) is the total revenue (in dollars) and x
Fudgin [204]

Answer:

How many units need to be sold to produce the maximum revenue? 1000 units

How many in dollars is the maximum revenue when the maximum of units are sold? $350,000

Step-by-step explanation:

We get max value of a function if we differentiate it and set it equal to 0.

We need to differentiate r(x) and set it equal to 0 and solve for x.

<u><em>That would be number of units sold to get max revenue.</em></u>

<u><em /></u>

<u>Then we take that "x" value and substitute into r(x) to get the max revenue amount.</u>

<u />

Before differentiating, we see the rules shown below:

f(x)=ax^n\\f'(x)=n*ax^{n-1}

Where

f'(x) is the differentiated function

Now, let's do the process:

r (x)=700x-0.35x^2\\r(x)=700-2*0.35x\\r(x)=700-0.7x\\0=700-0.7x\\0.7x=700\\x=1000

So, 1000 units need to be sold for max revenue

Now, substituting, we get:

r (x)=700x-0.35x^2\\r(1000)=700(1000)-0.35(1000)^2\\r(1000)=350,000

The max revenue amount is $350,000

5 0
3 years ago
A cone has a height of 10 millimeters and a radius of 6 millimeters. What is its volume? Use ​ ≈ 3.14 and round your answer to t
Vesna [10]

Answer:376.80\ mm^3

Step-by-step explanation:

Given

The height of the cone is h=10\ mm

The radius of the cone is r=6\ mm

Volume of cone is given by

V=\dfrac{1}{3}\pi r^2h

Insert the values

\Rightarrow V=\dfrac{1}{3}\times 3.14\times 6^2\times 10\\\\\Rightarrow V=376.80\ mm^3

Thus, the volume of the cone is 376.80\ mm^3

8 0
2 years ago
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