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2 years ago

Solve each system by substitution:

Mathematics

2 answers:

olchik [2.2K]2 years ago

6 0

Answer:

$12x + 3(4x - 1) = 8 \\ 12x + 12x - 3 = 8 \\ 24x = 8 + 3 \\ x = \frac{11}{24} = 0.4$

makvit [3.9K]2 years ago

3 0

Answer:

No Solution / NS

Step-by-step explanation:

Plug in the bottom equation into the top!

12x + 3(-4x-1) = 8 | <em>The bottom equation is replacing the y on the top equation</em>

<em />

Then solve it!

12x - 12x - 3 = 8

-3 = 8

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There are 20 students in the high school glee club. They need to pick four students to serve as

gayaneshka [121]

Answer:

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Step-by-step explanation:

To solve this problem we use the formula of combinations

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Where n is the total number of students that can be chosen and you choose r from them.

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Note that in this case the order in which the 4 students are chosen does not matter.

Then

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3 years ago

Read 2 more answers

PLS HELP! If f(x) = -9x + 12, and f(x) = -6, find x.

aivan3 [116]

Answer:

Step-by-step explanation:

You can rewrite thosee two equations as -9x+12=-6, because f(x)=f(x)

Now isolate x

-9x+12=-6

-9x+12-12=-6-12 (subtract 12, subtraction property of equality)

-9x=-6-12

-9x=-18 (simplify)

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x=2

5 0

3 years ago

Part B

Georgia [21]

Answer:140

Step-by-step explanation: It is a really big number not the most reasonable answer for the low amount of marbles their are in the jar adding 58 and 82 gives you your answer

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3 years ago

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Answer:

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3 years ago

At 2pm the level of the water in the pool was 10 feet. At 6pm the level of water was 2 feet. Find the constant rate of the water

adelina 88 [10]

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3 years ago