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kirill115 [55]
3 years ago
10

Solve the equation: - 5 = 5x + 7

Mathematics
2 answers:
HACTEHA [7]3 years ago
8 0
Subtract 5x from both sides

-5x - 5 = 7
add 5 to both sides

-5x = 12

divide both sides by -5

ANSWER:
x = -2.4
il63 [147K]3 years ago
6 0

Answer:

x= -12/5

Step-by-step explanation:

-5=5x+7

-5x=5+7

-5x=12

   x= -12/5

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Suppose that a sequence is defined as follows.a₁ = -4, an=3an-1+7 for n>2List the first four terms of the sequence.
maria [59]

The sequence is defined as

an = 3an - 1 + 7

This means that

a2 = 3(a(2 - 1) + 7

a2 = 3a1 + 7

From the information given ,

a1 = - 4

Thus,

a2 = 3 * - 4 + 7 = - 12 + 7

a2 = - 5

a3 = 3(a(3 - 1) + 7

a3 = 3a2 + 7

a3 = 3 * - 5 + 7 = - 15 + 7

a3 = - 8

a4 = 3(a(4 - 1) + 7

a4 = 3a3 + 7

a4 = 3 * - 8 + 7 = - 24 + 7

a4 = - 17

Thus, the first four terms of the sequence are

- 4, - 5, -

8 0
1 year ago
What is the domain of f?
lana [24]

Answer: C) All real values of x such that x \le 0

In other words, x must be 0 or smaller.

===================================================

Explanation:

The reason why is because we must make the stuff under the square root to never be negative. We must make -2x be 0 or larger.

So,

-2x \ge 0 \\\\-2x+2x \ge 0+2x \ \text{ ... add 2x to both sides}\\\\0 \ge 2x\\\\2x \le 0  \ \text{ ... flip both sides, and the inequality sign}\\\\x \le 0/2  \ \text{ ... divide both sides by 2}\\\\x \le 0

As an example, if x = -2, then -2x = -2(-2) = 4 is positive. Applying the square root to a positive number is valid.

But if x = 5, then -2x = -2*5 = -10 is under the square root, which is not allowed.

3 0
3 years ago
I have two questions
MA_775_DIABLO [31]

Answer for question 1 is Percentage Calculator: 6 is what percent of 15? = 40.

Answer for question 2 is What is 18 percent (calculated percentage %) of number 32? Answer: 5.76.

hope it helps. Please mark me Brainleist please.

6 0
3 years ago
Read 2 more answers
Quiz
Lynna [10]

Answer:

its c. The leading coefficient is 8.

Step-by-step explanation:

7 0
3 years ago
Evaluate 7w -14 for w=9
densk [106]
It is 49. 7(9) -14 is 49.
5 0
3 years ago
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