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4 years ago

Can u help me on number 5,6,and 7 i will help u on what u need just send me a message

Mathematics

2 answers:

sergij07 [2.7K]4 years ago

8 0

Q5a) 3 = 2x -7

10 = 2x
x = 5. True

b) 3 < 2x -9

12 < 2x
6 < x False

c) 2 <_ x + 6

-4 <_ x True (because -4, -3, -2 ... Infinity can be values of x)

d) 18 = 6x - 12

30 = 6x
x = 5. True

e) 3 = 2 + x

x = 1. False

Q6)

7 < 5x - 16
23 < 5x
4.6 < x

4 is not a solution of this inequality (i couldnt put equal sign under the inequality but lets assume we did and 4 is still not a solution)

Q7)

9x < 63
x < 7

They dont because x is less than 7 not less than equal to 7 so this inequality is not true for this particular set

Fynjy0 [20]4 years ago

4 0

<em>5.</em> Input 5 where the x's, 3 = 2(5) - 7 is a true statement. 10 - 7 = 3
3 < 10 - 9 is a false statement, 3 > 1 is a true statement
2 is less than or equal to 11, is a false statement (2 is less than 11, but not equal to)
18 = 30 -12 is a true statement 30 - 12 = 18, 18=18
3= 2 + 5 is a false statement, 3 is not equal to 7

<em>6. </em>7 is less than or equal to 5(4) -16, 20 - 16 = 4, 7 is not less than or equal to 4. Therefore, 4 is not a solution.

<em>7. </em>9(5) - 3 < 60, 45-3 < 60, 42 < 60, 42 is less than 60, so the equation is true.
9(6) - 3 < 60, 54 - 3 < 60, 51 < 60, 51 is less than 60, so the equation is true.
6(7) - 3 < 60, 63 -3 < 60, 60 < 60, 60 is equal to 60, the equation is false.

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Bogdan [553]

Answer:

(LCM)

Step-by-step explanation:

Least common multiple = LCM

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3 years ago

What the answer please help marking brainliest if it's correct and explain

kolezko [41]

Answer: The answer is C or Median

Step-by-step explanation:

8 0

3 years ago

Hareem takes a medicine to control his blood pressure. he takes a 25 mg pill in the morning. suppose that 60% of the medicine is

Vikentia [17]

The recursive definition for the amount of the blood pressure medicine in hareem bloodstream after n hours would be $a_1=25, a_n = 0.60_{n-1} +25$

Hence, option B is correct.

<h3>What is the recursive rule?</h3>

A rule is defined such that its definition includes itself.

Example:

F(x) = F(x-1) + c

is one such recursive rule.

Hareem takes medicine to control his blood pressure.

he takes a 25 mg pill in the morning.

Suppose that 60% of the medicine is processed by hareem's body by the time he takes a second 25 mg pill in the evening.

So, the recursive definition for the amount of the blood pressure medicine in hareem bloodstream after n hours would be;

$a_1=25, a_n = 0.60_{n-1} +25$

Hence, option B is correct.

Learn more about the recursive rule here:

brainly.com/question/12620593

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5 0

2 years ago

Multiple Choice

Zanzabum

A) Answer: A. 22.5 cm, 30 cm, and 37.5 cm

Setting the unity measurement as x, the three sides will be 3·x, 4·x, and 5·x. The sum of the three sides will be (3 + 4 + 5)·x = 12·x; this corresponds to the perimeter, therefore:

12·x = 90 cm

We can solve for x:

x = 90 / 12 = 7.5 cm

Hence, the sides will be:

7.5 · 3 = 22.5 cm

7.5 · 4 = 30 cm

7.5 · 5 = 37.5 cm

This situation is represented in option A (which is also the only option whose sides add up to 90).

B) Answer: C. never true

We have:

6 + 8x - 9 = 11x + 14 - 3x

Bring all the terms with x on the left, by subtracting from both sides 11x and -3x, and all the numbers on the right by subtrcting from both sides 6 and -9:

6 + 8x - 9 - 11x - (-3x) - 6 - (-9) = 11x + 14 - 3x - 11x - (-3x) - 6 - (-9)

Cancel out the opposite terms from each side:

8x - 11x + 3x = 14 - 6 + 9

Combine likely terms:

0x = 17

Now you should ask yourself: what number multiplied by zero gives 17 as a result? The answer is none because a number multiplied by zero always equals zero.

Hence, the statement is never true.

C) Answer: $r \leq \frac{1}{5}$