4 years ago

Help on number nine please?

Mathematics

1 answer:

AURORKA [14]4 years ago

7 0

im pretty sure true because they do not intersect and are not parallel :)

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Please help my assignment is due at 12:00

jasenka [17]

Answer:

-89/250

Step-by-step explanation:

as a simplfied fraction

5 0

3 years ago

22 - (+12) - (-4) + (-6)

ella [17]

Answer:

Step-by-step explanation:

+- = -
-- = +
+- = -
++ = +

22-12+4-6 = 8

7 0

3 years ago

Read 2 more answers

2x + 3y = 6

Natalka [10]

*eq1 by 2 and eq2 by -3
4x+6y=12
-15x-6y=-12
-11x=0
x=0
so
3y=6
y=2
so option 3 is correct
11y=22

3 0

4 years ago

Read 2 more answers

Given the first term and the common ratio of a geometric sequence find the explicit formula.

lisov135 [29]

A geometric sequence is generated by multiplying the first term in the sequence, $a_1$ , several times by a fixed scalar $r$ . So

$a_2=a_1r$

$a_3=a_2r=a_1r^2$

$a_4=a_3r=a_1r^3$

and so on, down to

$a_n=a_{n-1}r=a_{n-2}r^2=\cdots=a_1r^{n-1}$

Using the result above, the sequences you're interested in are

31) $a_n=-(-2)^{n-1}$

33) $a_n=4(-4)^{n-1}$

We can rewrite these results to make them slightly cleaner.

$-(-2)^{n-1}=-(-1)^{n-1}2^{n-1}=(-1)^n2^{n-1}$

$4(-4)^{n-1}=4(-1)^{n-1}4^{n-1}=(-1)^{n-1}4^n$

6 0

3 years ago

Jennifer is saving money to buy a bike. The bike costs $230. She has $125 saved, and each week she adds

Olegator [25]

Step-by-step explanation:

230 - 125 = 105

If she saves 15 every week

Then

105 ÷ 15 = 7 weeks

It will take her 7 weeks

7 0

3 years ago

Help on number nine please?​

Help on number nine please?