Math solve a equation x: x +7 = 2

Answers

Answer 1

Answer: You would do the.opposite of addition. 7-2=5. Bring down the x-x=x=-5 If you're looking for like terms there are none

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Let f(x) = x + 8 and g(x) = x2 − 6x − 7. Find f(g(2)).

Answers

Mathematical Work:
f(x)=x+8
g(x)=x2-6x-7
f(g(2))=(2^2-6(2)-7)+8
f(g(2))=(4-12-7)+8
f(g(2))=-7
Explanation:
f(x)=x+8
g(x)=x2-6x-7
f(g(2))=?
2 was given as the x for function g and when you substitute 2 into function g's equation(g(2)=(2^2-6(2)-7)=-15, you would get -15. The answer to function g would be the x for function f. Which would be f(-15)=-15+8 and the answer for f(g(2)) is -7.

f(x) = x + 8
g(x) = x² - 6x - 7

f(g(2)) = ((2)² - 6(2) - 7) + 8
f(g(2)) = (4 - 12 - 7) + 8
f(g(2)) = (-8 - 7) + 8
f(g(2)) = -15 + 8
f(g(2)) = -7

Brad drives 527 miles on 17 gallons. How many miles does Brad drive on one gallon? (5 points + Brainiest!)a
31 miles per gallon
b
527 miles per 17 gallons
c
5.27 miles per gallon
d
1 over 31 miles per gallon

Answers

Answer:

Step-by-step explanation:

527 / 17 = 31

A polygon with side lengths of 6, 9, and 15 forms a triangle. TrueFalse

Answers

Answer:

I think that statement is false

Answer:

A polygon with side lengths of 6, 9, and 15 forms a triangle. True or False. False.

Step-by-step explanation:

A password is 4 characters long and must consist of 3 letters and 1 of 10 special characters. If letters can be repeated and the special character is at the end of the password, how many possibilities are there? a. 175,760
b. 456,976
c. 703,040
d. 1,679,616

Answers

Hello,
number of letters:26
In each 3 first position ,we can put 26 possibilities
=>26^3
Last position: 10 posibilities

==>26^3*10 =175 760
Answer A

Using the Fundamental Counting Theorem, it is found that the number of possibilities is given by:

a. 175,760

What is the Fundamental Counting Theorem?

It is a theorem that states that if there are n things, each with $n_1, n_2, \cdots, n_n$ ways to be done, each thing independent of the other, the number of ways they can be done is:

$N = n_1 * n_2 * \cdots * n_n$

In this problem:

The first three characters are letters that can be repeated, hence $n_1 = n_2 = n_3 = 26$ .

The last character is one digit from a set of 10, hence $n_4 = 10$ .

Then:

N = 26 x 26 x 26 x 10 = 175,760.

Hence option A is correct.

To learn more about the Fundamental Counting Theorem, you can check brainly.com/question/24314866

Tom sells baseball cards at 10 for 35 cents. Is that a better deal than 12 for 40 cents?

Answers

For either one of the deals, just find what one card equals and times it by how many cards the other equation has.

e.g. 0.35 cents divide by 10 = 0.035. And now, you times it by 12 since the other deal is 12 cards for 40 cents.

0.035 x 12 = 0.48

So, 10 cards for 35 cents is not the better deal.

1 case
35c : 10 = 3,5c
2 case
40c : 12 = 3,(3)c

3,(3)c < 3,5c

Anwers
First option is a better deal than second version.

1a) Which equation demonstrates the commutative property of addition for complex numbers? A: (5 - 10i)[(0 - 10i) +(5 +0i)] = [(5 - 10i)(0 - 10i)]+[(5 - 10i)(5 +0i)]

B: (10 - 5i) + (5 - 10i) = (5 - 10i) +(10 – 5i)

C: (5+ 10i)+(- 5 - 10i) = 0+ Oi

D: [(0 - 5i)+(5-i)] +(5 +i) = (0 - 5i)+[(5 - i) +(5+i)]

1b) Which of the following demonstrates the commutative property of multiplication?

A: (8+6i)(4+2i)=(4+2i)(8+6i)

B: (7-6i)(0+2i)=(7+2i)(0-6i)

C: (2+8i)(2-8i)=20

D: (-5+3i)(-1+i)=(5-3i)(1+i)

Answers

Answer:

The answer to 1a is B and the answer to 1b) is A.

Step-by-step explanation:

I got my answer right on the quiz. So, it's actually a lot easier than it seems. Imagine 4+2=2+4 or (8)(4)=(4)(8). That is commutative property of addition and multiplication just simper. In this case B and A are the same thing just with complex numbers.

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