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3 years ago

Tell whether the sequence is arithmetic if it is identify the common difference -7,-3,1,5

1 answer:

7 0

Yes it is an arithmetic sequence because a specific number is being added to each previous number. So starting from -7, if you add 4 you get -3, add 4 again to get 1, add 4 one last time to get 5

So, yes the sequence is arithmetic and the common difference is +4

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Arterial blood gas analyses performed on a sample of 15 physically active adult males yielded the following resting PaO2 values:

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

Find the measure of the arc or angle indicated.

Shkiper50 [21]

9514 1404 393

Answer:

arc AC = 63°

Step-by-step explanation:

Arc BC is twice the measure of inscribed angle BAC, so is ...

arc AC = 2×89° = 178°

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3 years ago

O.012 in words from

Scrat [10]

Answer:

word form of 0.012 is

zero point zero one two

Step-by-step explanation:

.-point

0-zero

1-one

2-two

3-three

4-four

5-five

6-six

7-seven

8-eight

9-nine

10-ten

4 0

3 years ago

The perimeter of a triangle is 170 feet and the sides are in the ratio of 25:14:12. Find the area of the triangle.

Viktor [21]

Let
x,y, and z the long sides of the triangle

we know that

x+y+z=170 ft------> equation 1
x/y=25/14----> y=14x/25------> equation 2
y/z=14/12-----> equation 3
x/z=25/12----> z=12x/25------> equation 4

substitute equation 2 and equation 4 in equation 1
x+[14x/25]+[12x/25]=170------> multiply by 25 both sides
25x+14x+12x=4250
51x=4250
x=4250/51
x=250/3
y=14x/25------> y=(250/3)*(14/25)----> y=140/3
z=12y/14-----> (140/3)*12/14----> z=40

Using Heron's formula,
Area of the triangle = √s (s-a) (s-b) (s-c)
where s is the semiperimeter
s=170/2-----> s=85 ft
Area=√85*[85-250/3]*[85-140/3]*[85-40]
Area=9.22*[1.67]*[38.33]*[45]------> Area=26558.21 ft²

the answer is
26558.21 ft²

6 0

3 years ago