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2 years ago

Which equation is a linear function? y=2^x -1 y=x/2-5 y=2/x +3 y=x^2 +7

Mathematics

1 answer:

Umnica [9.8K]2 years ago

5 0

Answer:

Second Choice.

Step-by-step explanation:

$y = mx + b$

That is the linear function. Any coefficients with higher degrees won't be considered as a linear function.

So we can cut out the first and last choice.

Then we have only two choices which are

$y = \frac{x}{2} - 5 \\ y = \frac{2}{x} + 3$

The second equation is called Rational Function where a variable is a denominator.

Therefore, the correct answer is second choice.

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A map has a scale of 1cm:20 km two cities are 2.5 cm apart on the map to the nearest tenth of a kilometer what is the actual dis

Aleksandr-060686 [28]

Answer: 50 km

Step-by-step explanation: So the map has a scale of 1 cm: 20 km. Next, you look at how far they are apart and see if the scale and the distance on the map are the same measurement. In this case, they are both centimeters so they stay the same. Then, all you do is multiple the real size, 20 km, by

2.5 /1 . Then, 20 x 2.5=50. So the answer is 50 km

6 0

3 years ago

I really really need help with this please.

11111nata11111 [884]

The number of ancestors going back through the 5th generation, including Tle-nle and counting Tle-nle as the 1st generation is:

= 1 + 3 + 3^2 + 3^3 + 3^4
= (3^5 - 1) / (3 - 1)
= 242 / 2
= 121

Since we included Tle-nle as the 1st generation, we will only compute up to the 4th power. If it is until the 6th generation, add 3^5 to the equation.

8 0

3 years ago

The radius of a circle is 4 1/2 inches. What is the circles circumference in terms of 3.14 (pie)

DerKrebs [107]

The circumference of a circle can be found using the equation 2 π r

(2)(3.14)(4.5) = 28.26 (or 28 13/50 if you need it in fractions)

3 0

3 years ago

The Fibonacci sequence is defined by $F_1 = F_2 = 1$ and $F_{n + 2} = F_{n + 1} + F_n$. Find the remainder when $F_{1999}$ is di

zavuch27 [327]

Answer:

The remainder is 1

Step-by-step explanation:

Given the Fibonacci sequence

F_1 = F_2 = 1, and

F_(n + 2) = F_(n + 1) + F_n

We want to find the remainder when F_(1999) is divided by 5.

Let us write the first 20 numbers of the sequence in (mod 5). They are

F_1 = 1,

F_2 = 1,

F_3 = 2,

F_4 = 3,

F_5 = 5 = 0 (mod 5),

F_6 = 3,

F_7 = 3,

F_8 = 1

F_(9) = 4

F_(10) = 0

F_(11) = 4

F_(12) = 4

F_(13) = 3

F_(14) = 2

F_(15) = 0

F_(16) = 2

F_(17) = 2

F_(18) = 4

F_(19) = 1

F_(20) = 0

We have: 1, 1, 2, 3, 0, 3, 3, 1, 4, 0, 4, 4, 3, 2, 0, 2, 2, 4, 1, 0

Now, 1999 = 19(mod 20)

The 19th number in the sequence is 1.

So, the remainder is 1.

6 0

2 years ago

Find the length of side a will mark brainly

Mekhanik [1.2K]

Answer:

Step-by-step explanation:use the cube to count(cube is in the corner.)

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3 years ago