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Gnoma [55]
3 years ago
13

Helppppp please answer 30 pointssss

Mathematics
1 answer:
Margarita [4]3 years ago
3 0

Answer:

\frac{x}{3}  =  \frac{7x}{12x - 15}  \\ 12 {x}^{2}  - 15x = 21x \\ 12 {x}^{2}  -36x = 0 \\  12x(x - 3) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 3} \\  \\  \frac{25 - 3x}{x + 5}  = 1 \\ 25 - 3x = x + 5 \\ 3x + x = 25 - 5 \\ 4x = 20 \\ \boxed{ x = 5} \\  \\  \frac{3x - 2}{x}  =  -  \frac{8}{x}  \\ 3 {x}^{2}  - 2x =  - 8x \\  3 {x}^{2}  -6x = 0 \\ 3x(x - 2) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 2} \\  \\  \frac{3 - x}{x}  =  \frac{x + 1}{2x}  \\ 6x - 2 {x}^{2}  =  {x}^{2}  + x \\ 3 {x}^{2}  - 5x = 0 \\ x(3x - 5) = 0 \\  \boxed{x = 0} \: or \: \boxed{x =  \frac{5}{3} }

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Hi there! Sorry to bother you, but can someone help me out with this?
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Answer:

A,A,D

Step-by-step explanation:

>The order of the letters are very important ΔMAX≅ΔKFC

Draw on a paper 2 triangles and label them starting in the same corresponding place and in the same order to find the corresponding parts.

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M .       X .    ≅ .  K .          C

so ∡X≅∡C, answer is A

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TM ≅ RD, answer is A

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3 0
3 years ago
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1:3

Step-by-step explanation:

Hope this helps!

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gizmo_the_mogwai [7]
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Nesterboy [21]

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Please help me (please dont send links)
Burka [1]

Answer:

Part A

79.4

Part B

84

Part C

The science class

Step-by-step explanation:

The linear function representing the average test score in the math class, after taking <em>x</em> number of tests, f(x) = 0.2·x + 79

The science class average test score, after taking <em>x</em> number of tests, is given by the linear function g(x)

The values of g(x) are presented as follows;

x; 1, 2, 3

g(x); 86, 84, 82

Part A

By using the given function for the test average for the math class, f(x), when x = 2, we have;

f(2) = 0.2 × 2 + 79 = 79.4

The test average for the math class after completing test 2 = 79.4

Part B

The test average for the science class after completing test 2 from the table is 84

Part C

After completing test 4, the test average for the math class, f(4), is given as follows;

f(4) = 0.2 × 4 + 79 = 79.8

The test average for the science class after the completing test 4 is found by noting that the test average, g(x) decreases by 2 for each increase in the number of test taken, <em>x</em>, by 1

Given that the test average of the science, g(3) class after taking test 3 is 82, the test average after taking test 4, g(4) = g(3) - 2 = 82 - 2 = 80

g(4) = 80

Therefore, after completing test (4), the science class has a higher test average g(4) = 80, than the math class f(x) = 79.8

3 0
3 years ago
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