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sp2606 [1]
2 years ago
11

What is the solution to 3.25k + 1 - 4.25k = -2

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
8 0
K=3 is the answer my work is in the picture

Bogdan [553]2 years ago
6 0

Answer: K=3

Step-by-step explanation: Have a nice day!-Lily ^_^

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Rina8888 [55]
I can’t see planet a and b can you show me what it says
6 0
3 years ago
A bookstore had 64 copies of a magazine. Yesterday, it sold 1/4 of them. Today, it sold 1/8 of what remained. How many copies do
just olya [345]

Answer: 42

Step-by-step explanation:

if the bookstore has 64 copies,

yesterday it was sold 1/4 , so it was sold 64/4=16

today it was sold 1/8 from what remained, which is 6(see below)

64-16=48

48/8=6

the store has left 48-6=42

6 0
3 years ago
Find the interval(s) over which the function is decreasing
son4ous [18]

Answer : (0,3) U  (3, ∞)

We need to find  the interval(s) over which the function is decreasing

We look at the intervals of x  where the graph is decreasing

Decreasing interval of the graph is the part where the graph goes down

We look at the part where the graph changes direction

In the middle  inverted U shaped graph , the graph changes direction and start decreasing at x=0

the graph is decreasing till x=3

so first decreasing interval is x=0  to 3. we write it as (0,3)

After x=3 the graph starts decreasing and it goes to infinity

So the second decreasing interval is 3  to infinity . We write it as (3, ∞)

Now combine both intervals by a 'U' union

(0,3) U  (3, ∞)

7 0
3 years ago
What would be the remainder ?
ruslelena [56]

Answer:

A

Step-by-step explanation:

Given (x + h) is a factor of f(x) then f(- h) = 0

Given

p(x) = x³ - 4x² + ax + 20 , with (x + 1) as a factor then

p(- 1) = (- 1)³ - 4(- 1)² - a + 20 = 0 , that is

- 1 - 4 - a + 20 = 0

15 - a = 0 ( subtract 15 from both sides )

- a = - 15 ( multiply both sides by - 1 )

a = 15 , thus

p(x) = x³ - 4x² + 15x + 20

If p(x) is divided by (x + h) then p(- h) is the remainder, so

p(- 2) = (- 2)³ - 4(- 2)² + 15(- 2) + 20 , that is

- 8 - 16 - 30 + 20 = - 34 → A

3 0
3 years ago
What is the slope of (-8,-20) (-7,-10)
Zarrin [17]

Answer:

10

Step-by-step explanation:

Formula for slope: (y2-y1)/(x2-x1)

Plug the numbers in: (-10-(-20))/(-7-(-8))=10/1=10

Slope is 10.

7 0
3 years ago
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