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2 years ago

Please help ill mark brainliest if correct

Mathematics

2 answers:

Alex17521 [72]2 years ago

7 0

The answer is A) (3.1, 2.2)

Leto [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Given the 2 equations

y = 2x - 4 → (1)

2x + 4y = 15 → (2)

Substitute y = 2x - 4 into (2)

2x + 4(2x - 4) = 15 ← distribute and simplify left side

2x + 8x - 16 = 15

10x - 16 = 15 ( add 16 to both sides )

10x = 31 ( divide both sides by 10 )

x = 3.1

Substitute x = 3.1 into (1) and evaluate for y

y = 2(3.1) - 4 = 6.2 - 4 = 2.2

solution is (3.1, 2.2 ) → A

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valentinak56 [21]

Since the order matters, it's a permutation of 7 letters, but mind you in
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⁷P₇ /(3!2!) = 7!/(3!2!) = 5040/(3!2!) = 420 arrangements

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3 years ago

Solve the equation. 1.25 =0.75+r

Eduardwww [97]

Answer:

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Step-by-step explanation:

Do the opposite of addition

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3 years ago

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The points (-6, r)<br> and<br> (6,3) lie on a line with slope 3/4. Find the missing coordinate r.

NeTakaya

Answer:

r = -6

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept.

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This means that $m = \frac{3}{4}$ , and thus:

$y = \frac{3}{4}x + b$

(6,3)

This means that when $x = 6, y = 3$ . We use this to find b. So

$y = \frac{3}{4}x + b$

$3 = \frac{3}{4}(6) + b$

$b = 3 - \frac{18}{4} = \frac{12}{4} - \frac{18}{4} = -\frac{6}{4}$

$y = \frac{3}{4}x - \frac{6}{4} = \frac{3x - 6}{4}$

(-6, r)

r is y when $x = -6$ . So

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So r = -6.

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3 years ago

Please help with numbers 4 and 5

Sav [38]

Idk
The answer and I can’t see it

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3 years ago

Plz help me on this

max2010maxim [7]

Answer:

3 pages

Step-by-step explanation:

12% of 25 = 3

bro, goo.gle

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3 years ago

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Please help ill mark brainliest if correct​

Please help ill mark brainliest if correct