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3 years ago

X+y/y−x when x=4 and y=3

Mathematics

1 answer:

daser333 [38]3 years ago

6 0

Answer:

Step-by-step explanation:

4+3/3-4

3/3 = 1

4-4 = 0

1 + 0 = 1

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To receive a grade of A on an 80-question test, 90% of the questions must be answered correctly. What is the maximum number of q

marta [7]

Answer:

The answer would be 8.

Step-by-step explanation:

This is a percentage question, and I have struggled with these before but this is the <em>easiest</em> way to solve it given these certain criteria.

Alright, so it's given that:

A) 90%= an A grade

and

B) This is an 80-question test.

Given these, we can do the following:

90% times 80, which equals <em>72</em>.

Just to check, we know that to convert percentages to fractions, we move the decimal two spots to the left, therefore 90%= 0.90, or 0.9. We take 72 and divide it by 80, and we get 0.9, thus showing that it is correct.

Then, we do 80-72 and using simple math we get 8.

8 0

3 years ago

31% of 40 estimate what is it please help

chubhunter [2.5K]

31% of 40 is 12.4 exactly

7 0

3 years ago

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in a company 75% of the workers are men if 725 people work for the company who aren't men how many workers are there in all

sleet_krkn [62]

Answer:

544 are men 181 are women

Step-by-step explanation:

725/4 =181x3

5 0

3 years ago

Read 2 more answers

The reaction of the body to a dose of medicine can sometimes be represented by an equation of the formR = M^2 (C/2- M/3),where C

mr Goodwill [35]

Answer:

The derivative is $\frac{dR}{dM} = CM - M^2$

Step-by-step explanation:

From the question we are told that

The equation representing the reaction is $R = M^2 (\frac{C}{2} - \frac{M}{3} )$

Generally this equation can be represented as

$R = \frac{C M^2}{2} - \frac{M^3}{3}$

Generally $\frac{dR}{dM}$ as a function of M is mathematically represented as

$\frac{dR}{dM} = 2 * \frac{C M^{2 - 1 }}{2} + 3 * \frac{M^{3-1}}{3}$

=> $\frac{dR}{dM} = CM - M^2$

8 0

4 years ago

What are the possible rational zeros for f(x)=3x^4+x^3-13x^2-2x+9?

GenaCL600 [577]

ANSWER

The correct answer is D.

EXPLANATION

The given function is

$f(x) = 3 {x}^{4} + {x}^{3} - 13 {x}^{2} - 2x + 9$

According to the rational roots theorem, the possible rational roots of f(x) are all factors of 9 expressed over all the factors of 3,

$\pm \frac{1}{3},\pm \frac{3}{3},\pm \frac{9}{3},\pm9$

$\pm \frac{1}{3},\pm 1,\pm 3,\pm9$

The correct answer is D.

5 0

3 years ago