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3 years ago

Which one of the following statements is true?

1 answer:

3 0

The first derivitive is the slope
a positive 1st deriviive is positive slope or increasing
a negaitve 1st derivitive is negative slope or decreasing

the 2nd derivitive tells about the concavity
a negative second derivitive means it is concave down at that point
a positive 2nd derivitive means it is concave up at that point

so

first one is false
2nd is true
3rd is false because it could possibly be a minimum as well

answer is 2nd one

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Is (-3, 2) a solution of -4r - 10y< - 9?

Blizzard [7]

Answer:

The point (-3,2) is not a solution of the inequality

Step-by-step explanation:

Inequality

Inequalities relate the left and the right side of an expression with an operator other than the equal sign.

The inequality given in the question is

$-4r - 10y< - 9$

There are many combinations of r and y that make inequality be true. For example, for r=1 and y=1

$-4(1) - 10(1)< - 9$

$-14< - 9$

This relation is true since -14 is less than -9.

Also, there are many combinations that make the given inequality be false.

For example, for r=2 and y=-1

$-4(2) - 10(-1)< - 9$

$-8+10$

$2$

This inequality is false.

Let's test the point (-3,2)

$-4(-3) - 10(2)< - 9$

$12-10$

$2$

Which is false, thus the point (-3,2) is not a solution of the inequality

3 0

2 years ago

If r> 0 and r^t = 6.25r^t+2, then r =

Firdavs [7]

I'm going to use n instead of t

rⁿ=6.25rⁿ+2
minus rⁿ both sides
0=5.25rⁿ+2
minus 2 both sides
-2=5.25rⁿ
divide both sides by 5.25
-2/5.25=rⁿ
take the nth root of both sides
$\sqrt[n]{\frac{-2}{5.25}}= \sqrt[n]{r^n}$
$\sqrt[n]{\frac{-2}{5.25}}= r$

4 0

2 years ago

What is the answer for this equation "10=z/2+7"

NNADVOKAT [17]

10=z/2+7
Subtracat 7 from both sides
3=z/2
Multiply 2 on both sides
Final Answer: 6 = z

7 0

3 years ago

Read 2 more answers

Y=5x^3-3 {x=+_6} construct the data table

____ [38]

Data table for y = 5x³ - 3
Plug in the x to find the y-values.

x -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
y -1083 -628 -323 -138 -43 -8 -3 2 37 132 317 622 1077

8 0

2 years ago

How do i solve this: |6y+2|=2|2y-1|

ziro4ka [17]

Answer:

Step-by-step explanation:

Group like terms 6y-2y= 2-1-2

When a number goes over the equal sign= positive + changes to negative, vice versa.

So final answer is 4y= -1= -4y

Because 4 is decided by -1

7 0

2 years ago

Read 2 more answers