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Charra [1.4K]
3 years ago
12

Consider the expression 7x2 - 4 - 9x. What is the coefficient of x?

Mathematics
1 answer:
Mumz [18]3 years ago
6 0

Answer:

D) 9

Step-by-step explanation:

7 x 2 - 4 - 9x

14 - 4 - 9x

10 - 9x

You could easily see at first that the coefficient of x is 9 because the coefficient is the number that is before the variable, but you can also do the whole process.

Hope this was helpful :)

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3^3 times 3^3 divides by 3^4 <br><br> 3^0 <br>3^1 <br>3^2 <br>3^4
USPshnik [31]

Answer:

  3^2

Step-by-step explanation:

The applicable rules of exponents are ...

  (a^b)(a^c) = a^(b+c)

  (a^b)/(a^c) = a^(b-c)

__

  \dfrac{(3^3)(3^3)}{(3^4)}=3^{3+3-4}=\boxed{3^2}

8 0
3 years ago
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Solve the equation 5x^2-6x-7=0
Nataly [62]

Answer:

0.37

Step-by-step explanation:

5x^2-6x-7=0

25x-6x-7=0

19x-7=0

19x=7

0.37

4 0
2 years ago
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PL PLZ HELP 50+ POINTS PLZ ACTUALLY 100+ POINTS IF YOU HELP!!!!!!! ALSO, BRAINLIEST FOR THE BEST ANSWERS FOR ALL OF THEM!!!!
Nady [450]

Answer:

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Step-by-step explanation:

6 0
3 years ago
What is the distance between the points (5,7)and (-3,4) on the coordinate plane
Irina-Kira [14]

Answer:

\boxed{D = 8.5 \ units}

Step-by-step explanation:

The coordinates are (5,7) and (-3,4)

Distance Formula = \sqrt{(x2-x1)^2+(y2-y1)^2}

D = \sqrt{(-3-5)^2+(4-7)^2}

D = \sqrt{(-8)^2+(-3)^2}

D = \sqrt{64+9}

D = \sqrt{73}

D = 8.5 units

3 0
2 years ago
For each recursively-defined sequence below, write the first few term. Then use the terms to write an explicit equation.
Roman55 [17]

Answer:

Step-by-step explanation:

a_1 = 15

a_2 = a_1  - 3

a_2 = 15 - 3

a_2 = 12

a_3 = a_2  - 3

a_3 = 12 - 3

a_3 = 9

a_4 = a_3 - 3

a_4 = 9 - 3

a_4 = 6

a_5 = 3

a_6 = 0                  I'm leaving these last two to expand

a_n = a1 - (n - 1)*d

a_n = 15 - (n - 1)*3

a_n = 15 - 3n + 3

a_n = 18 - 3n

Example

a_6 = 18 - 3*6

a_6 = 0

Problem B

t(1) = 108

t(1 + 1) = 1/3 * 108

t(2) = 36

t(3) = 1/3 * t2

t(3) = 1/3 * 36

t(3) = 12

t(4) =1/3 (t(3))

t(4) = 1/3 * 12

t(4) = 4

t(5) = t4 / 3

t(5) = 4 / 3

t(5) = 1.3333333

So the explicit definition is

t(n) = 108 (1/3)^(n - 1)            You could simplify this a little bit by realizing that 108 is made of three 3s.

t(n) = 4 * 3^3 * (1/3)^(n - 1)

t(n) = 4 * (1/3) ^ (n - 4)

Example

t(5) = 108 (1/3)^4

t(5) = 108(1/81)

t(5) = 1.3333333

And using the simplified formula, you get.

t(5) = 4 * (1/3)^1

t(5) = 1.333333 which is the same thing as the original result.

7 0
3 years ago
Read 2 more answers
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