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Mrrafil [7]
3 years ago
10

PLZ I NEED HELP UNDERSTANDING THIS SOMEONE PLZ HELP ME

Mathematics
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

90

Step-by-step explanation:

180°-104°=76°( sum of angles A and B)

76°÷2=38°

x=38°

Bcuz it is an isosceles triangle ( a triangle with 2 equal sides). So, angle B and A are equal. thats why 76° must be divided by 2.

180°-104°=76°(angles on a straight line)

180°-76°=104° (sum of angle A and C)

104°÷2=52°

y=52°

it is also an isosceles triangle.

x+y=38+52=90°

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zheka24 [161]
(3x - 4)(2x^2 + 2x - 1) = 3x(2x^2 + 2x - 1) - 4(2x^2 + 2x - 1) = (6x^3 + 6x^2 - 3x) - (8x^2 + 8x - 4) = 6x^3 + 6x^2 - 3x - 8x^2 - 8x + 4 = 6x^3 - 2x^2 - 11x + 4
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Create a quadratic expression in standard form
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Answer:

ax²+bx+c

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Find the slope of the line that passes through the points (2 -5) and (7, 1)
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Step-by-step explanation:

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9514 1404 393

Explanation:

<u>Part B</u>:

Draw an open circle at x=5. Shade that portion of the number line that exists to the right of the open circle. The solution set is the shaded portion of the number line.

__

<u>Part C</u>:

Any value from the shaded portion of the number line can be used to check the inequality is true. The value at the open circle, or any value to the left of it can be used to check that the inequality is false. For example, one might use values of -5, 5, and 10. Choosing values that are multiples of 5 can make the arithmetic easier.

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7 0
3 years ago
3. 7.74 + 9.281 =
Varvara68 [4.7K]

Answer:

All answers are in explanation

Step-by-step explanation:

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