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7nadin3 [17]
3 years ago
5

If 9a + 9b + 9c = 5, what is 72a + 72b + 72c

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

40

Step-by-step explanation:

9a + 9b + 9c = 5

We want 72a

72a/9a = 8  so multiply the first equation by 8

8(9a + 9b + 9c) = 5*8

72a +72b +72c = 40

RSB [31]3 years ago
5 0

Answer:

40

Step-by-step explanation:

Divide all three terms of 72a + 72b + 72c by 8.  Result:  8(9a + 9b + 9c).

We are told that 9a + 9b + 9c = 5.    Thus, 8(9a + 9b + 9c) = 8(5) = 40

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Thomas invested $40,000. He put part of the money in an account paying 2% interest and the remainder
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Answer:

18,000 at 2%

22,000 at 3%

Step-by-step explanation:

x: the amount in account paying 2% interest

y: the amount in stock paying 3% interest

x + y = 40,000

2%. x + 3%. y = 1020

⇒ x = 18,000

y = 22,000

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2 years ago
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Sonja [21]

Answer:

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Step-by-step explanation:

2 x 8 is just another way of saying what would 8 + 8 be

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3 years ago
There are 500 people in a survey to answer two yes-or-no questions, for the first question, 440 people has a "yes" answer, for t
ollegr [7]

Answer:

Mininum value of K is 220

Step-by-step explanation:

400 people has a "yes" answer for the first question and 220 people has a "yes" answer for the second question

There is a possibility that 220 out of the 400 people that has a "yes" answer for the first question also has a "yes" for the second question

Therefore, the minimum number of people that has two "yes" answer (K) is 220

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3 years ago
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iogann1982 [59]

Step-by-step explanation:

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2 years ago
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∠A and ∠B are vertical angles. If m ∠A=(2x+26)∘ and ∠B=(3x−29)∘, then find the measure of ∠A.
Leya [2.2K]

The measure of angle (m ∠A) is 136°

<h3>Vertical angles theorem</h3>

From the question, we are to find the measure of angle A

From the given information, we have that

∠A and ∠B are vertical angles

Thus

∠A = ∠B

and

Also, from the given information,

m ∠A=(2x+26)°

and

m ∠B= (3x−29)°

∴ (2x+26)° = (3x−29)°

Now, solve for x

2x + 26 = 3x - 29

26 + 29 = 3x - 2x

55 = x

∴ x = 55

But measure of angle A is given by

m ∠A=(2x+26)°

Put the value of x into the equation,

m ∠A=(2(55)+26)°

m ∠A=(110+26)°

m ∠A = 136°

Hence, the measure of angle (m ∠A) is 136°

Learn more on Vertical angle theorem here: brainly.com/question/24839702

#SPJ1

6 0
2 years ago
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