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Korvikt [17]
4 years ago
5

Which ordered pairs are solutions to the inequality 4x+y>−6?

Mathematics
1 answer:
Naddika [18.5K]4 years ago
8 0

Hey!

----------------------------------------------------

Substitute with (−1, −1)

4x + y > −6

4(-1) + (-1) > -6

-5 + (-1) > -6

-6 > -6

TRUE

----------------------------------------------------

Substitute with (0, -9)

4x + y > −6

4(0) + (-9) > -6

0 + (-9) > -6

-9 > -6

FALSE

----------------------------------------------------

Substitute with (2, 0)

4x + y > −6

4(2) + 0 > -6

6 > -6

TRUE

----------------------------------------------------

Substitute with (4, -20)

4x + y > −6

4(4) + (-20) > -6

16 + (-20) > -6

-4 > -6

TRUE

----------------------------------------------------

Substitute with (-3, 6)

4x + y > −6

4(-3) + 6 > -6

-12 + 6 > -6

-6 > -6

FALSE

----------------------------------------------------

Hence, the answers are (2, 0), (4, -20), and (-1, -1)!

----------------------------------------------------

Hope This Helped! Good Luck!

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Answer:

A.

$1.40, $1.75, $2.10

B.

40

Step-by-step explanation:

A.

Follow the pattern of $0.35

B.

14 divided by 0.35 = 40

Hope this helps! Please mark as brianliest.

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3 years ago
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5 0
2 years ago
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Why are plus and minus signs ignored in percent error calculations?
inna [77]
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8 0
3 years ago
The sum of two numbers is 26. The larger number is 5 more than twice the smaller. What are
babymother [125]

Answer:

Step-by-step explanation:

Let n = the smaller of the two numbers, and since the other number is 5 more than twice the smaller number n, then ...

Let 2n + 5 = the second and larger number.

Since the sum of the two unknown numbers is 26, then we can write the following equation to be solved for n as follows:

n + (2n + 5) = 26

n + 2n + 5 = 26

Collecting like-terms on the left, we get:

3n + 5 = 26

3n + 5 - 5 = 26 - 5

3n + 0 = 21

3n = 21

(3n)/3 = 21/3

(3/3)n = 21/3

(1)n = 7

n = 7

Therefore, ...

2n + 5 = 2(7) + 5

= 14 + 5

= 19

CHECK:

n + (2n + 5) = 26

7 + (19) = 26

7 + 19 = 26

26 = 26

Therefore, the two desired numbers whose sum is 26 are indeed 7 and 19.

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Determine whether the statement is true or false. If f and g are positive increasing functions on an interval I, then fg is incr
Leno4ka [110]

Answer: false

Step-by-step explanation:

If f and g are increasing on I, this implies that f' > 0 on I and g' > 0 on I. That is both f' and g' have a positive slope. However,

Using product rule;

(fg)' = fd(g) + gd(f)

(fg)' = f * g' + f' * g

and although it is given that g' and f' are both positive we don't have any information about the sign of the values of the functions themselves(f and g). Therefore, if at least one of the functions has negative values there is the possibility that the derivative of the product will be negative. For example;

f = x, g = 5x on I = (-5, -2)

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6 0
3 years ago
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