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3 years ago

How would you write: two times a number plus one is greater than five and less than seven.?

Mathematics

1 answer:

lesya [120]3 years ago

5 0

This would be written like this: 5>2n+1<7. Hope this helps.

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Which ordered pairs are solutions to the inequality 2x+y>−4?

hichkok12 [17]

we will proceed to resolve each case to determine the solution

we have

$2x+y>-4$

$y>-2x-4$

we know that

If an ordered pair is the solution of the inequality, then it must satisfy the inequality.

case a) $(5,-12)$

Substitute the value of x and y in the inequality

$-12>-2*5-4$

$-12>-14$ ------> is True

therefore

the ordered pair $(5,-12)$ is a solution of the inequality

case b) $(-3,0)$

Substitute the value of x and y in the inequality

$0>-2*-3-4$

$0>2$ ------> is False

therefore

the ordered pair $(-3,0)$ is not a solution of the inequality

case c) $(-1,-1)$

Substitute the value of x and y in the inequality

$-1>-2*-1-4$

$-1>-2$ ------> is True

therefore

the ordered pair $(-1,-1)$ is a solution of the inequality

case d) $(0,1)$

Substitute the value of x and y in the inequality

$1>-2*0-4$

$1>-4$ ------> is True

therefore

the ordered pair $(0,1)$ is a solution of the inequality

case e) $(4,-12)$

Substitute the value of x and y in the inequality

$-12>-2*4-4$

$-12>-12$ ------> is False

therefore

the ordered pair $(4,-12)$ is not a solution of the inequality

Verify

using a graphing tool

see the attached figure

the solution is the shaded area above the line

The points A,C, and D lies on the shaded area, therefore the ordered pairs A,C, and D are solution of the inequality

7 0

3 years ago

Read 2 more answers

What are some letters with angles tjat correspond to a transversal.

Aliun [14]

DO you have choices?

3 0

3 years ago

Explain how two amounts of change can be the same but the percentage of change can be different

lys-0071 [83]

The change from 10 to 11 or from 100 to 101 is 1 in each case.

In the first case, the percentage of change is 1/10 = 10%.

In the second case, the percentage of change is 1/100 = 1%.

The percentages of change are different because the bases from which the change is measure are different.

8 0

3 years ago

What is the least common denominator of the equation 2/9x + 2/3x =7?

Igoryamba

Answer:

B) 9

Step-by-step explanation:

I mean 3 can't be a common denominator because 2/9 cannot be simplified. 27 and 63 are also common denominators but they higher than 9.

Hope This helps :)

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3 years ago

In a restaurant john bought one cup of gumbo and two salads for $12.25. Greg bought 4 gumbos and 4 salads for $31 how much does

CaHeK987 [17]

One cup gumbo = $3.25. one salad = $4.50

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2 years ago