All categories

3 years ago

Can someone please help me out here

Mathematics

1 answer:

Mariulka [41]3 years ago

4 0

Answer:

Student 2 did make a mistake.

Step-by-step explanation:

On B, they went from -12 to -2. That's definitely wrong. On A, they went from -1 to -5, which was not following the pattern so far.

You might be interested in

Log_3(x) = 3/2 solve for x

Kitty [74]

Answer:

Step-by-step explanation:

Given

log_3x = 3/2 can be rewritten as

3^1.5 = x

You calculator will give you the simplest answer to this. Look around for a key that looks like ^ or y^x or x^y.

Then you put the base (3) into your calculator and press your y^x key and put in 1.5

Answer:

x = 5.1962

7 0

2 years ago

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.

8 0

2 years ago

Change each improper fractions to a whole number or a mixed number: 9/5, 9/3, 9/2

ohaa [14]

9/5=1 4/5
9/3= 3
9/2=4 1/2

5 0

3 years ago

6 calculators cost $160 what is the rate and the unit rate

BigorU [14]

Answer:

$\dfrac{\$160}{6~calculators}$

$\dfrac{\$26.67}{calculator}$

Step-by-step explanation:

The rate for the 6 calculators is

$\dfrac{\$160}{6~calculators}$

To find the unit rate, divide 160 by 6.

The unit rate is

$\dfrac{\$26.67}{calculator}$

6 0

3 years ago

What expression is equivalent to twice B plus the sum of 2 and b?

ikadub [295]

Answer: . 2 + 3b

Step-by-step explanation: Twice b is 2b. Sum of 2 and b is 2 + b. Add them all together and combine like terms. You get your answer.

5 0

3 years ago