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3 years ago

-3а - b - 3c = 9 4а + 4 - 4c = 4 2а + 4c = 18

Mathematics

1 answer:

Reil [10]3 years ago

4 0

Answer:

0is the answer to this question

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Solve for y. 12x +2y = 26x -70 a) y= 7x - 35 b) y= 20x -35 c) y= 2x + 72 d) x= 2y +36x -70 I CAN'T TELL IF IM DUMB OR NOT

Zepler [3.9K]

Answer:

Step-by-step explanation:

12x + 2y = 26x - 70

2y = 14x - 70

y = 7x - 35

the answer is A

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3 years ago

Read 2 more answers

Solve and graph the compound inequalities. (You don’t need to graph it on a line plot but if you could that would be great!)

lidiya [134]

Part A

$-12 < 5x - 2 < 13\\\\-12+2 < 5x - 2+2 < 13+2 \ \text{ ... add 2 to all sides}\\\\-10 < 5x < 15\\\\-10/5 < 5x/5 < 15/5 \ \text{ ... divide all sides by 5 to isolate x}\\\\-2 < x < 3\\\\$

To graph this, we plot open holes at -2 and 3 on the number line. Shade between these open holes to represent values between -2 and 3, but we don't include the endpoints.

See figure 1 below.

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

Part B

Solve the first inequality to get

$3x < -9\\\\3x/3 < -9/3\\\\x < -3\\\\$

Now solve the second inequality

$2x \ge x+1\\\\2x-x \ge x+1-x\\\\x \ge 1\\\\$

We have $x < -3 \ \text{ or } \ x \ge 1$

The graph will have an open hole at -3 and a closed/filled in circle at 1. We shade everywhere but the region between these marked values. The left portion in blue represents stuff smaller than -3; the right portion in red represents values equal to 1 or larger.

See figure 2 below.

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2 years ago

The sum of 4 consecutive integers is 182. W hat is the sum of the middle two numbers?

Kamila [148]

Answer:

Step-by-step explanation:

Let

x = first number

x+1 = second number

x+2 = third number

x+3 = fourth number

Total = 182

x + x + 1 + x + 2 + x + 3 = 182

4x + 6 = 182

Subtract 6 from both sides

4x + 6 - 6 = 182 - 6

4x = 176

Divide both sides by 4

x = 176 / 4

= 44

x = 44

x+1 = 44 + 1 = 45

x+2 = 44 + 2 = 46

x+3 = 44 + 3 = 47

Sum of the two middle numbers = 45 + 46

= 91

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3 years ago

What was the name of the treatise in which Euclid compiled all the existing geometric knowledge, along with some of his own obse

Black_prince [1.1K]

Euclid wrote 1 books related to math & logic.
He compiles all his studies in one treatise called ELEMENTS

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4 years ago

The amount Amanda earns babysitting in a month is represented by the equation a=9.5h. In the equation, a

Alekssandra [29.7K]

Answer:

9.5

Step-by-step explanation:

Well the constant proportionality is 9.5 because that is what makes p directly proportional to a, because when h increases, a increases, and when h decreases, a decreases.

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3 years ago

-3а - b - 3c = 9 4а + 4 - 4c = 4 2а + 4c = 18​

-3а - b - 3c = 9 4а + 4 - 4c = 4 2а + 4c = 18