3 years ago

Help me please thank you!!

Mathematics

1 answer:

dangina [55]3 years ago

3 0

Answer:

answer choice 2

Step-by-step explanation:

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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.

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2 years ago

HELP PLZ Derek’s favorite clothing store is having their annual fall sale. All clothing is 25 percent off. A shirt he really lik

Naya [18.7K]

Answer:

Step-by-step explanation:

257

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4 years ago

Geometry math question no Guessing and Please show work

mrs_skeptik [129]

Hello!

As you can see,this triangle has a 97° angle, which means it is obtuse. As you can see, all of the lines are different lengths, so it is scalene.

Therefore, our answer is B) obtuse, scalene.

I hope this helps!

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4 years ago

Read 2 more answers

Need help with this please

ryzh [129]

Answer:

-2/5

Step-by-step explanation:

Exactly the opposite of the sign, opposite of + is negative (-)

8 0

3 years ago

Please help me solve this

seropon [69]

9514 1404 393

Answer:

103°

Step-by-step explanation:

The law of sines tells you ...

sin(C)/c = sin(A)/a

sin(C) = (c/a)sin(A)

C = arcsin(c/a·sin(A)) = arcsin(37/19·sin(30°)) ≈ 180° -76.8° ≈ 103°

Obtuse angle C is about 103°.

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3 years ago