2 years ago

B = 23a + 1 b = -13a + 7

Mathematics

1 answer:

ohaa [14]2 years ago

8 0

The answer is the question

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6 and 2/3 divided by 1/5 pls help

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2 years ago

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Use the elimination method to find all solutions of the system:

weqwewe [10]

Answer:

$x = 3$ and $y = 4$

Step-by-step explanation:

Given

[Correct Question]

$x^2 - 2y = 1$

$x^2 + 5y = 29$

Required

Solve using elimination

First, we eliminate x.

Subtract equation (1) from (2)

$x^2 - x^2 + 5y - (-2y) = 29 - 1\\$

$5y - (-2y) = 28$

$5y +2y = 28$

$7y = 28$

Divide through ny 7

$y = 4$

Take $x^2 - 2y = 1$

Make x^2 the subject

$x^2 = 1 + 2y$

Substitute 4 for y

$x^2 = 1 + 2*4$

$x^2 = 1 + 8$

$x^2 = 9$

Take square roots

$x = \sqrt 9$

$x = 3$

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2 years ago

Round 2769.44 to the nearest tenths place

vlada-n [284]

It would be 2769.44 still since it would technically be 2769.440 if you were rounding to the TENTHS place. The Zero(0) doesn't change anything so the answer is

2769.44

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3 years ago

What is one way to find the number of grams in 6 kilograms?

gavmur [86]

Answer:

Multiply by 1000

Step-by-step explanation:

6kg equals 6000g

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2 years ago

What is 9x^2-18x-7÷(3x+1)

Phantasy [73]

81x - 126x ÷ 3x + 1
45x / 3x + 1
15x / x + 1

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