HELP. ME. PLEASE. .....................................

Mathematics

1 answer:

Goshia [24]1 year ago

8 0

Answer:

it's C just did the quiz and go it right

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Find the sum of the first 6 terms of 3 - 6 + 12 + …

Natalka [10]

Answer:

$S_6 = -63$

Step-by-step explanation:

The sequence above is a geometric sequence.

The common ratio (r) = $\frac{-6}{3} = \frac{12}{-6} = -2$

The common ratio < 1, therefore, the formula for the sum of nth terms of the sequence would be: $S_n = \frac{a_1(1 - r^n)}{1 - r}$

a1 = 3

r = -2

n = 6

Plug in the values into the formula

$S_6 = \frac{3(1 - (-2^6)}{1 - (-2)}$

$S_6 = \frac{3(1 - (64)}{1 + 2}$

$S_6 = \frac{3(-63)}{3}$

$S_6 = -63$

6 0

3 years ago

I need help with questions 11. Help me.

zysi [14]

That diagram can be split into a right angled triangle of base 7 and of height 4 + 5.2 + 2 = 11.2, and a square of length of 5.2 So the are of the total shape is the area of the right angled triangle + the area of the square.
= $\frac{11.2*7}{2} +5.2^2=66.24$
Please mark me as brainliest.

8 0

2 years ago

What is the value of x?

daser333 [38]

Answer:

x=22.5

Step-by-step explanation:

BM||DT

Using Intercept theorem/Intercept theorem

$\frac{6}{6+15} =\frac{9}{9+x}$