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4 years ago

Do 3÷5 and 5÷3 represent the same expression

Mathematics

1 answer:

Lisa [10]4 years ago

3 0

No
If it was multiplication, it would be the same, but division is not

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Evaluate cos(sin^-1a)

stira [4]

Answer:

(√1 - a²)

Step-by-step explanation:

cos(sin⁻¹ a) = cos x°

sin x° = sin (sin⁻¹ a) = a

as shown in the attached picture

sin x° = a/1 cos x° = (√1 - a²) / 1 = (√1 - a²)

3 0

3 years ago

Would 2+6x^2-2x be monomial, binomial or trinomial?

Vedmedyk [2.9K]

Answer:

Trinomial

Step-by-step explanation:

Because it has 3 terms.

3 0

2 years ago

Please evaluate the equation

snow_lady [41]

Step-by-step explanation:

$= \sum \limits_{n = 1}^{7} ( - 2. {6}^{n - 1} )$

$= \sum \limits_ {n = 1}^{n_{ \text{max}}} (a_1. {r}^{n - 1} )$

$\:$

$a_1 = - 2$

$n = 7$

$r = 6 \to r >1$

$\:$

• Find S7.

$s_n = a_1.( \frac{ {r}^{n} - 1}{r - n} )$

$s_7 = - 2.( \frac{ {6}^{7} - 1 }{6 - 1} )$

$s_7 = - 2.( \frac{279.936 - 1}{5} )$

$s_7 = - 2.( \frac{279.935}{5} )$

$s_7 = - 2 \: . \: 55.987$

$s_7 = - 111.974$

The answer is B.

8 0

2 years ago

WHOEVER ANSWERS FIRST GETS BRAINLIEST, 5 STARS, AND A THANK YOU.

Arisa [49]

Answer:

I answer first

Step-by-step explanation:

lol

7 0

3 years ago

Marcos works 8 hours a day. He makes $19 an hour. On Tuesday, he only worked 3/4 of a day. How much did Marcos earn on Tuesday?

xeze [42]

Your answer should be C.

Explanation: answer B is to little of an amount so that is not the answer and $19 multiplied by 8hrs is only $152 so there for the answer cannot be answer b, because that is way over the max amount that can be made in 8 hrs and 3/4 is really 6 hours out of 8 hours. And 6 multiplied by $19 is $114 so your answer would be C.

4 0

4 years ago