3 years ago

If r= - square root2 and a^5= 32square root2, what is the first term of the sequence?

Mathematics

1 answer:

Elena-2011 [213]3 years ago

8 0

Answer:

8√2

Step-by-step explanation:

r=-√2

a5=32√2

an=a1(r)^{n-1}

32√2=a1(-√2)^{5-1}=a1×(-√2)^4=a1×4

$a1=\frac{32\sqrt{2}}{4}=8\sqrt{2}$

You might be interested in

Can someone answer this for me (in the picture)

lozanna [386]

My answer would be D, but I am not sure.

5 0

3 years ago

Find the distance between (-6,4) and (-2,1)

zhannawk [14.2K]

Answer:

$d=2.65$

Step-by-step explanation:

Distance Formula: $d=\sqrt{(x_2-x_1)^2-(y_2-y_1)^2}$

Simply plug in your 2 coordinates into the formula to find distance <em>d</em>:

$d=\sqrt{(-2-(-6))^2-(1-4)^2}$

$d=\sqrt{(-2+6))^2-(-3)^2}$

$d=\sqrt{(4)^2-9}$

$d=\sqrt{16-9}$

$d=\sqrt{7}$

$d=2.65$

4 0

3 years ago

Question on angles, photo attached.

MArishka [77]

I think the answer is D.

6 0

3 years ago

Read 2 more answers

Indicate the answer choice that best completes the statement or answers the question. Convert units to complete each equation. 3

Nikolay [14]

Answer:

180 or b

Step-by-step explanation:

3 times 60 is 180 because there are 60 seconds in a minute

8 0

4 years ago

Read 2 more answers

You bought groceries last week. You used coupons and saved 25% on your grocery bill. You saved $8.80. How much was your bill bef

QveST [7]

Answer:

$35.2

Step-by-step explanation:

% saved = 25%

Money saved = $8.80

Let x be the bill before the coupon discount.

25/100 × x = 8.80

x = $35.2

7 0

4 years ago