2 years ago

Please help a girl out:

Mathematics

2 answers:

Alina [70]2 years ago

8 0

20.
85 % of 20 is 17.

frez [133]2 years ago

6 0

Answer:

Step-by-step explanation:

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Select all the equations below that have a slope of -5.

Zanzabum

Answer:

B and C

Step-by-step explanation:

they have -5x, it doesn't really matter on their order

7 0

2 years ago

Sams bill at a restaurant is $12, and he leaves a 20% tip. What is the total bill including the tip

Setler79 [48]

The tip is $2.40 and the bill is$14.40

4 0

2 years ago

What is the term of a 7-term geometric series if the first term is -11 the last term is -45,056 and the common ratio is -4

shutvik [7]

I assume you mean to ask how to find the sum of the seven terms?

You have

$a_2=ra_1$
$a_3=ra_2=r^2a_1$
$a_4=ra_3=r^3a_1$
...
$a_7=ra_6=r^6a_1$

So the sum is

$a_1+ra_1+r^2a_1+\cdots+r^6a_1=a_1(1+r+r^2+\cdots+r^6)=a_1\times\dfrac{1-r^7}{1-r}$

You know that $a_1=-11$ and $r=-4$ , so the sum is equal to

$-4\times\dfrac{1-(-4)^7}{1-(-4)}=-13108$

8 0

3 years ago

Log x + log (2x-1) = log 6

Brilliant_brown [7]

Answer:

x = 2

Step-by-step explanation:

logx + log(2x - 1) = log 6

Apply log rules,

x(2x - 1) = 6

2x^2 - 1x = 6

x = 2 (true) or x = -3/2 (False)

8 0

2 years ago

What is 4/5 x 3 1/8 in simplest form

Lesechka [4]

3 1/8 means 8 x 3 + 1 = 25/8

Step-by-step explanation:

4/5 x 25/8

= 4x25/5x 8

= 100/40

= 5/2

6 0

2 years ago