Solve for linear equations by substitution

x + 2y = 6
X-y=3

Answer:

C.

Step-by-step explanation:

The top system of equations has the solutions:

x = -(236/3) y = -(44/3)

C. System of equations has:

x = -(236/3) y = -(44/3)

D. System of equations has:

x = -(204/19) y = -(44/19)

Answer:

B)  $1..50

Step-by-step explanation:

First, how many trading cards did Naveen have?

87 + 9 - 16 + 3 = 83

$124.50 / 83  = $1.50

If the die is rolled then the probability of the roll is a prime number is [tex]\frac{4}{10}=\frac{2}{5}[/tex]. The probability that the same number would appear twice on the dice is [tex]0.01[/tex], and the expected value of the roll is [tex]5.5[/tex].

Expected value (EV), which is based on a random variable's probability distribution, describes the long-term average level of that variable. The expected value of a stock or other investment is a crucial factor in investing and is taken into account while performing scenario analysis. The anticipated value is an extension of the weighted average in probability theory. Informally, the anticipated value is the arithmetic mean of a significant number of outcomes of a random variable that were independently chosen. Find the anticipated value by [tex]E(X)[/tex]. Simply multiply each value of the discrete random variable by its probability, then add the results to get the value, or mean, of the random variable. The equation is provided as [tex]E(X)[/tex]=μ=Σ[tex]XP(X)[/tex]. Expected value is calculated by multiplying each outcome's value by the probability.

Total Number of outcomes is [tex]10[/tex]. And the number of prime number is [tex]4 \ \ i.e.\ (2,3,5,7)[/tex]. So the probability of a prime number is [tex]\frac{4}{10}=\frac{2}{5}[/tex]

The expected value is ×[tex]XP(X)= 0*\frac{1}{10}+1 * \frac{1}{10} + 2*\frac{1}{10} +3*\frac{1}{10} +4*\frac{1}{10} +5*\frac{1}{10} +6*\frac{1}{10} +7*\frac{1}{10} +8*\frac{1}{10} +9*\frac{1}{10} \\ =0+\frac{1}{10}+\frac{2}{10}+\frac{3}{10}+\frac{4}{10}+\frac{5}{10}+\frac{6}{10}+\frac{7}{10} +\frac{8}{10}+\frac{9}{10} \\ =\frac{1+2+3+4+5+6+7+8+9}{10}=\frac{55}{10}=5.5[/tex]

If the dice is rolled twice the probability that the same number is obtained is [tex]\frac{1}{10}*\frac{1}{10}=\frac{1}{100}=0.01[/tex]

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Answer:

Step-by-step explanation:

11.  Point (0,4) m=2

 y-y1 = m(x-x1)

 y - 4 = 2(x -0 )

  y-4 =2x

  y = 2x+4

12.  (3,5) and (9,3)

 m = (3-5) / (9-3)

 m = -2 / 6 = -1/3

y-y1 = m(x-x1)

y - 5 = (-1/3) (x - 3)

3y -15 = -(x-3)

3y = -x + 3 +15

3y = -x +18

13.  y = -x/3 + 6

14.  3x - 5y = 15

        -5y = -3x +15

         divide by -5 throughout

    y = (3/5)x - 3

Answer:

slope is 4x

y intercept is (0,6)

equation is y=4x+6

Step-by-step explanation:

don't know what proportional means with graphs

Answer: The answer is D.) -2 and I'm correct :)

Step-by-step explanation:(-3,0) and (-4,2)

M=y2-y1

x2-x1

M= 2-0= 2

-4-(-3) = -1 ^Both equal to -2

Answer:

true

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

the unit right below yards is ft so we can mark out A

we also know that there are 3 feet in 1 yard and that in order for the unit yard to cancel out, the 1 yard needs to be the denominator to 3 feet, so we can mark out D

the unit right below feet is inches and we know that there are 12 inches in one foot, so we can mark out B

this leaves us with C

Answer: Angle A= 35

Step-by-step explanation:

Answer:

D. 375

Step-by-step explanation:

this is the answer because the distance you need to travel doesn't change based off the amount of gas you have

Answer:

x = no solutions

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define equation

4x - 5 = x - 1 + 3x

Step 2: Solve for x

Here we see that -5 does not equal -1.

∴ This equation has no solutions.

Answer is B: As the risk of an investment decreases, so does the potential for its return.

Answer:

There's a 1/6th chance it'll be tied up.

Step-by-step explanation:

A dice has six sides. One of these sides has 4 dots.

Answer:

2/3 or 1/6

Step-by-step explanation:

Because a die has six sides. So you have six chances to get a 4 again.

Step-by-step explanation:

a : (-6 , -8)

b: (6 , 8)

I used desmos for the problems

Answer: -0.6

Step-by-step explanation:

Answer:

11,316 < 14,265

Step-by-step explanation:

< Smaller than Mount Evans

> Bigger than Mount Evans

= Same size as Mount Evans

< Less than or equal to the size of Mount Evans

> Greater than or equal to the size of Mount Evans

Percentage error in computing volume is 10%;

r = 6 cm;

Possible measurement error , dr = ±0.1;

dr = 0.1-(0.1) = 0.2 cm;

Volume, V = 4/3 πr³ -(1)

Differentiate w.r.t. r;

dV/dr = 4πr²;  -(2)

Divide (2) by (1);

dV/V = 3 (dr/r)

Put value of r = 6 cm, dr = 0.2 cm;

dV/V = 0.1

Percentage error in computing volume = dV/V × 100% = 10%

volume is a measure of occupied three-dimensional space. it's miles frequently quantified numerically using SI derived units (consisting of the cubic meter and liter) or by way of diverse imperial devices (inclusive of the gallon, quart, cubic inch).

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Answer:

The answer is D.

Step-by-step explanation:

Answer:

The correct option is;

Magnitude of 8 and direction angle equal to 0°

Step-by-step explanation:

The magnitude of a vector is given by the distance from the initial point of the vector, (which id the starting point) to the final point of the vector, which is the end point of the vector

From the graph, the starting point of the vector = (-2, 2·√2)

The end point of the vector from the graph = (6, 2·√2)

The magnitude of the vector = √(6 - (-2))² = 6 - (-2) = 6 + 2 = 8

The direction of the vector = arctan((The y-component of the vector)/(The y-component of the vector))

∴ The direction of the given horizontal vector = arctan(0/8) = arctan(0) = 0°

Answer:

A - Magnitude of 8 and direction angle equal to 0°.

Step-by-step explanation:

Edge. 2023

Answer:

A

Step-by-step explanation:

y-int = -2

so the line should cross (0, -2)

Rise over run is 2/5 so go up 2, over 5 and put your dot etc...

Answer:

1  1/2

Step-by-step explanation:

I think

Answer:

1 1/14

Step-by-step explanation:

same denominator so, 10+11 = 21,

simplified, 1 1/14

Answer:

3r/s

Step-by-step explanation:

Answer:

A' (-1,2), B' (-5,-3), C' (3,2)

Step-by-step explanation:

Reflect triangle ABC across the y-axis.

Ry-axis: (x,y) → (-x,y)

A (1,2) → A' (-1,2)

B (5,-3) → B' (-5,-3)

C (-3,2) → C' (3,2)

I hope this helps :)

Answer:

this the season to be jolly falalalalaaaa la la la la

Answer:

A

Step-by-step explanation:

The value of the integers computed are 25 and 125.

It should be noted that from the information given, 4² is given as 16 and 4³ is given as 64. We are to find another example that illustrates the information.

The number to use here is 5.

In this case, 5² will be 5 × 5 = 25

5³ will be 5 × 5 × 5 = 125

Therefore, the value of the integers computed are 25 and 125.

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Answer:

This is 4 quadrants picture