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3 years ago

What is the value of x if 5x+6=8?

Mathematics

2 answers:

marysya [2.9K]3 years ago

8 0

Answer:

x=2/5

Step-by-step explanation:

5x+6=8

5x=8-6
5x=2
x=2/5

mariarad [96]3 years ago

8 0

5x+6=8

move +6 to the other side

sign changes from +6 to -6

5x+6-6=8-6

5x=8-6

5x=2

divide both sides by 5 to get x by itself

5x/5=2/5

Answer:

x=2/5

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The following statement is either true (in all cases) or false (for at least one example). If false, construct a specific e

matrenka [14]

Answer:

False, counterexample below

Step-by-step explanation:

Denote the unit vectors of R^3 by $e_1=(1,0,0), e_2=(0,1,0), e_3=(0,0,1)$ . Now consider $v_1=e_1, v_2=2e_1$ and $v_3=e_3$ . We have that $v_1, v_2,v_3 \in \mathbb{R}^3$ . Also, the vector $v_3$ is not a linear combination of $v_1, v_2$ because any linear combination of these two vectors will have third coordinate zero, but v_3 has third coordinate 1 so they can't be equal.

However, the set $\{v_1, v_2,v_3\}$ is not linearly independent, because $2v_1-v_2+0v_3=0$ is a non-trivial linear combination of these vectors that equals zero.

4 0

3 years ago

The cost of renting a game at the video store can be described by the function y=5x+4

topjm [15]

Answer:

2 days

Step-by-step explanation:

Use the given formula

y = 5x + 4

The information:

y is the money spent

x is the number of days

It is known that Justin spent $18

so now just substitute in that value

$18 = 5x + 4

and simplfiy by inverse operations

18 = 5x + 4

-4 -4

14 = 5x

/5 /5

2.8 = x

As per this problem, one can infer that renting a game is done by days, and will be charged in days, hence renting a game for 0.8 days is pointless

meaning that the final answer is 2 full days

6 0

3 years ago

in 2002, a 30 second commercial during super bowl cost an average of 1,900,000. At this rate, how much would a 45 second commerc

kotegsom [21]

This is a unit multiplier of sorts

1,900,000 x 45/30

Simplify

1,900,000 x 3/2

2,850,000

3 0

3 years ago

Read 2 more answers

What is the slope? Simplify your answar and write it as a proper fraction, improper fraction, or intiger.

FrozenT [24]

Answer:

$\displaystyle m = \frac{1}{2}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinate Planes

Reading a graph
Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

Step 1: Define

Identify points from graph.

Point (20, 0)

Point (100, 40)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m = \frac{40 - 0}{100 - 20}$
[Order of Operations] Simplify: $\displaystyle m = \frac{40}{80}$
Simplify: $\displaystyle m = \frac{1}{2}$

6 0

2 years ago

Plss help me!!

lakkis [162]

Step-by-step explanation:

The problem statement says λ<1. If this is true, then the cannonball is slower than the boat, and it will never reach the boat. So I assume it's actually λ>1.

If we say t is the amount of time, then the boat travels south a distance of ut, and the cannonball travels a distance of λut.

v = λut

ut = v/λ

Using Pythagorean theorem:

d² + (ut)² > v²

d² + (v/λ)² > v²

λ²d² + v² > λ²v²

λ²d² > (λ² − 1) v²

λ² / (λ² − 1) > (v/d)²

4 0

2 years ago

What is the value of x if 5x+6=8?​

What is the value of x if 5x+6=8?