3 years ago

Look at the two inequalities. Select all the values from the set (4 ½, 7, 10, 15.5, 20) that make both inequalities true.

Mathematics

2 answers:

dem82 [27]3 years ago

5 0

Answer:15

Step-by-step explanation:

vagabundo [1.1K]3 years ago

3 0

The answer for your question is 15

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Triangle D E F is shown. The length of E F is 10, the length of D F is 7, and the length of D E is 12. What information relevant

Zarrin [17]

Answer:

34.98 square units.

Step-by-step explanation:

It is given that DEF is a triangle, EF=10, DF=7 and DE=12.

Information of sides of triangle is relevant to calculating area.

We should use Heron's formula.

According to Heron's formula, the area of triangle is

$A=\sqrt{s(s-a)(s-b)(s-c)}$

where,

$s=\dfrac{a+b+c}{2}$

For triangle DEF, let a=10, b=7 and c=12.

Now,

$s=\dfrac{10+7+12}{2}=\dfrac{29}{2}=14.5$

Area of triangle is

$A=\sqrt{14.5(14.5-10)(14.5-7)(14.5-12)}$

$A=\sqrt{14.5(4.5)(7.5)(2.5)}$

$A=\sqrt{1223.4375}$

$A=34.977671$

$A\approx 34.98$

Therefore, the area of triangle DEF is 34.98 square units.

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4 years ago

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The population of Oregon is about 3.8 million. The population of the whole U.S. is about 318.9 million. Approximately what perce

taurus [48]

Oregon would be about 12.567 percent.

Hundredths Rounding - 12.57

Tenths Rounding- 12.6

Ones Place Rounding- 13

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3 years ago

This number is a square number, this number is a multiple of 9

valkas [14]

I think the number is 81 but I am not sure hoped that helped sorry that I am not completely positive ):

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3 years ago

What is the quotient? −2 1/8 ÷1 1/4

Mariulka [41]

The quotient is -1.7!

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What is the equation of the line that passes through the point (-3,5) and has a slope of -2

wariber [46]

Answer:

equation: y=-4x-7

Step-by-step explanation:

y=-4x+b

solve for b using given coordinates on the line (-3, 5)

5=-4(-3)+b

b=-7

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4 years ago

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