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2 years ago

4. Use the substitution method to determine the solution to this system of equations.

Mathematics

1 answer:

N76 [4]2 years ago

3 0

Answer:

No solution

Step-by-step explanation:

6X - 3Y = -9--------------(1)

- 2 X +Y= 5---------------(2)

from equation two,

Y = 5+2X------------------(3)

substitute equation (3) into equation (1)

6X-3(5+2X)= -9

opening bracket

6X-15-6X= -9

6X- 6X = -9+15

0 = 6

<h2>therefore the answer is no solution</h2>

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In the isosceles trapezoid ABCD, find the value of x.

Semenov [28]

Answer:

Step-by-step explanation:

3x+15=60

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3 years ago

Which is the most accurate measurement of 1 pound? (Remember, there are 16 ounces in a pound.)

Maslowich

Answer:

15 ounces is the most accurate measurement of 1 pound .

Option (C) is correct .

Step-by-step explanation:

As given

The most accurate measurement of 1 pound .

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3 years ago

Read 2 more answers

A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have contracted the disease. If the prob

UkoKoshka [18]

Answer:

The probability that 8 mice are required is 0.2428.

Step-by-step explanation:

Given : A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have contracted the disease. If the probability of contracting the disease is two sevenths.

To find : What is the probability that 8 mice are required? The probability that that 8 mice are required is nothing ?

Solution :

Applying binomial distribution,

$P(X=r)=^nC_r p^rq^{n-r}$

Where, p is the probability of success $p=\frac{2}{7}$

q is the probability of failure q=1-p, $q=1-\frac{2}{7}=\frac{5}{7}$

n is total number of trials n=8

r=3

Substitute the values,

$P(X=3)=^8C_3 (\frac{2}{7})^3 (\frac{5}{7})^{8-3}$

$P(X=3)=\frac{8!}{3!5!}\times \frac{8}{343}\times (\frac{5}{7})^{5}$

$P(X=3)=\frac{8\times 7\times 6}{3\times 2\times 1}\times \frac{8}{343}\times \frac{3125}{16807}$

$P(X=3)=0.2428$

Therefore, the probability that 8 mice are required is 0.2428.

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4 years ago

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FromTheMoon [43]

f(x) = 3x - 1

Step-by-step explanation:

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3 years ago

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Troyanec [42]

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Step-by-step explanation:

You should just multiply the two values together.

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3 years ago