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Mathematics

1 answer:

Arisa [49]2 years ago

6 0

Answer:

5.498 - C

Step-by-step explanation:

Length of an arc = tetha/360 × 2 × pi × r

Converting 7pi/4 to tetha

(7 × 180) / 4 = 315°, since pi = 180°

Plugging values to the formula:

315/360 × 2 × 3.142 × 1 = 5.498units

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What is the standard form of (6x^2-8x-7)+(8x^2-76x)

Studentka2010 [4]

Answer: 14x^2 - 84x - 7

====================================================

Explanation:

The like terms 6x^2 and 8x^2 combine to 14x^2

The like terms -8x and -76x combine to -84x

Nothing pairs with the -7, so its stays as is.

Standard form is where we list the terms in decreasing exponent order. We can think of -84x as -84x^1 and the -7 as -7x^0. So 14x^2 - 84x - 7 would be the same as 14x^2 - 84x^1 - 7x^0. The exponents count down: 2,1,0.

The final answer is a trinomial since it has three terms. It is also a quadratic because the degree (highest exponent) is 2.

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2 years ago

What is the slope of the line that passes through the points (-1, 2) and (-4, 3)?

I am Lyosha [343]

Answer:

-0.5

Step-by-step explanation:

(3-2)=1

(-4-1)=-5

1÷(-5)= -0.5

6 0

2 years ago

Please help me out ASAP

sesenic [268]

Answer:

$26^9$

Step-by-step explanation:

$26^1 *26 ^8\\=26^{1+8} \\=26^{9}$

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2 years ago

PLEASE HELP!!!!

3241004551 [841]

Answer: Correct

Step-by-step explanation:

The conclusion is valid. Since $\overline{AB} \parallel \overline{DC}$ and $\overline{AD} \parallel \overline{BC}$ , we know that ABCD is a parallelogram because it has two pairs of parallel sides. Also, since $\overline{AB} \cong \overline{BC}$ , we know that ABCD is a parallelogram with a pair of consecutive congruent sides, making it a rhombus.