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3 years ago

5

The variable x represents a value in the set {4,6,7,8}.

1 answer:

olya-2409 [2.1K]3 years ago

8 0

Answer:

B:6

Step-by-step explanation:

2(6-4)+3=7

2(2)+3=7

4+3=7

7=7

True

You might be interested in

The sum of three prime numbers (other than two) is always odd.

grandymaker [24]

Step-by-step explanation:

The statement in the above question is True.

Sum of three prime numbers (other than two) is always odd.

Going by Christian Goldbach number theory ,

Goldbach stated that every odd whole number greater than 5 can be written as sum of three prime numbers .

Lets take an example,

3 + 3 + 5 = 11
3 + 5 + 5 = 13
5 + 5 + 7 = 17

Later on in 2013 the Mathematician <u>Harald Helfgott</u> proved this theory true for all odd numbers greater than five.

6 0

3 years ago

Pleaseeee help! I'm really confused.

seropon [69]

He will be making a right triangle with the legs being 24 x 45. The diagonal will be the hypotenuse of the triangle. To find the amount of fencing we need the perimeter of the triangle.
Use Pythagorean theorem to find the length of the hypotenuse.
a^2 + b^2 = c^2
24^2 + 45^2 = c^2
576 + 2025 = c^2
2601 = c^2
sqrt 2601 = c
c = 51
Adding the three lengths the total fencing needed is
51+24+45=120 meters

8 0

3 years ago

Please help me find

erica [24]

Answer:

150 feet

Step-by-step explanation:

the ratio of her shadow to her height

2/5=60/150

60/150=2/5

i hope it is right

3 0

3 years ago

Read 2 more answers

Which equation represents a proportional relationship? A. y = x + 1 3 y=x+13 B. y = 1 − 1 3 x y=1-13x C. y = 3 x + 1 3 y=3x+13 D

34kurt

Answer:

Option D. $y=\frac{1}{3}x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

<u><em>Verify each case</em></u>

case A) we have

$y=x+\frac{1}{3}$

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

$y=0+\frac{1}{3}=\frac{1}{3}$

so

The line not passes through the origin

therefore

The equation A not represent a proportional relationship

case B) we have

$y=1-\frac{1}{3}x$

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

$y=1-\frac{1}{3}(0)=1$

so

The line not passes through the origin

therefore

The equation B not represent a proportional relationship

case C) we have

$y=3x+\frac{1}{3}$

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

$y=3(0)+\frac{1}{3}=\frac{1}{3}$

so

The line not passes through the origin

therefore

The equation C not represent a proportional relationship

case D) we have

$y=\frac{1}{3}x$

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

$y=\frac{1}{3}(0)=0$

so

The line passes through the origin

therefore

The equation D represent a proportional relationship

3 0

3 years ago

What is the equation in standard form of the line y = 19x + 5?

Inessa05 [86]

The correct answer is 19x-y=-5

7 0

4 years ago