All categories

3 years ago

Preston has spent 7hrs of the required 13hrs he needs for ALEKS. What percentage of time does he have left?

Mathematics

1 answer:

marissa [1.9K]3 years ago

7 0

Answer:

he has 46.1538462% left

Step-by-step explanation:

7/13 = 0.538461538

1 - 0.538461538 = 0.461538462

You might be interested in

Find the value(s) of k such that 4x² + kx + 4 = 0 has 1 rational solution

Blababa [14]

Answer:

If you mean only one rational solution, the answer is

$k_1 = 8, k_2 = -8$

If you mean at least 1 rational solution, the answer is

$k\in (-\infty, -8]\cup[8, \infty)$

Step-by-step explanation:

$4x^2 + kx + 4 = 0$

Let's calculate the discriminant.

$\Delta = b^2 - 4ac$

$\Delta = k^2 -4 \cdot 4 \cdot 4$

$\Delta = k^2 -64$

Now, remember that:

$\text{If } \Delta > 0 : \text{2 Real solutions}$

$\text{If } \Delta = 0 : \text{1 Real solution}$

$\text{If } \Delta < 0 : \text{No Real solution}$

Therefore, I will just consider the first two cases.

$k^2 - 64 > 0$

and

$k^2 -64 = 0$

$\boxed{\text{For } k^2 - 64 > 0}$

$k^2 > 64 \Longleftrightarrow k>\pm\sqrt{64} \Longleftrightarrow k\in (-\infty, -8)\cup(8, \infty)$

$\boxed{\text{For } k^2 - 64 = 0}$

$k^2 = 64 \Longleftrightarrow k=\pm\sqrt{64} \implies k_1 = 8, k_2 = -8$

7 0

3 years ago

Urgent helps bxjdidjdjjfjdhhdhdh

MatroZZZ [7]

Answer:

l=40

Step-by-step explanation:

The area is calculated as

A = wl

1200=30l

1200/30=l

40=l

5 0

3 years ago

What is x exponent 2 + 3x - 4 = 6X

MAVERICK [17]

The answer is -2/3(-0.6)

8 0

3 years ago

Read 2 more answers

What is the explicit rule for the sequence?

adelina 88 [10]

Answer:

i think the answer would be -8n-65

Step-by-step explanation:

its subtracting by 8 so it would be -65,-57.-49...........................

3 0

4 years ago

Read 2 more answers

a value of 500 increases by 12%. Write and equation that could be used to find the new value. What is the new value?

myrzilka [38]

500×12%
(500×12)÷100
6000÷100
=60

so,
500+60=560

7 0

4 years ago