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Fynjy0 [20]
3 years ago
11

What is the domain and range?

Mathematics
1 answer:
Savatey [412]3 years ago
4 0
Domain sets values and Range is the difference between the highest and the lowest numbers.
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Does 8-x=9 have one or more values?
notsponge [240]

Answer: one value

Step-by-step explanation:

8 - x = 9

collecting the like terms

x = 8 - 9

x = -1

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What is the diameter of this circle?​
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The diameter of the circle is 14cm

Step-by-step explanation:

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The letters in the word STATISTICS are printed on identical index cards with one letter per card. The ten cards are
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I think the answer is c I guess

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Please help everyone. 20 points
Simora [160]

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136.1

Step-by-step explanation:

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3 years ago
The base of a triangle exceeds the height by 9 centimeters. If the area is 56 square centimeters, find the length of the base an
shepuryov [24]

Answer:

The height of the triangle is 7cm and the base is 16cm

Step-by-step explanation:

First of all we have to know the formula to calculate area of ​​a triangle

a = area = 56

b = base

h = heigth

a = (b * h)/2

we replace the known values and we make 2 equations

56cm² = (b * h)/2

b = h + 9cm

we replace b by (h + 9cm) in the first equation

56cm² = (h + 9cm * h)/2

56cm² * 2 = h² + 9h

0 = h² + 9h - 112cm²

we use bhaskara formula:

(-b (±) √ (b² - 4ac) ) / 2a

we replace with the known values

h = (-9 (±) √ (9² - 4*1*(-112) ) ) / 2*1

h = (-9 (±) √ (81 + 448) ) ) / 2

h = (-9 (±) √529) /2

h = (-9 (±) 23)/2

h1 = (-9 + 23) / 2

h1 = 14 / 2

h1 = 7

h2 = (-9 - 23) / 2

h2 = -32 / 2

h2 = -16

The height of the triangle is 7cm and the base is 16cm

8 0
3 years ago
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