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Aleks04 [339]
3 years ago
12

I wanna know: [3,5]={3,4,5}? Why?

Mathematics
1 answer:
Agata [3.3K]3 years ago
6 0

Answer:

Yes if [3,5] is a set of integers then it contains elements 3,4,5

As Closed bracket denotes that extreme points are also included and 4 is mid element in between 3 and 5

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From a list of ten books, how many groups of 4 books can be selected
andreyandreev [35.5K]

First you have all ten books, but then every time after, you loose one because you can't put the same book in the group twice.

10 * 9 * 8 * 7 = 5040 groups

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What is the missing number
Anna35 [415]

Answer:

I got 235, which works in perfectly into the problem...

Step-by-step explanation:

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STOP IGNORING ME AND HELP ME NOW
zubka84 [21]

Answer:

about $1148.06

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Your goal is to find the area of the island of grass and multiply that area by the cost per square yard.

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3 years ago
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When instructed to find the length of HJ in right
kobusy [5.1K]

See attachement for the diagram of the triangle

Answer/Step-by-step explanation:

To find the length of HJ, we can use different equations as follows:

✔️Recall: SOHCAHTOA

Let's take <G as the reference angle = 28°

Opposite side to reference angle = HJ

Hypotenuse = 20

Apply SOH.

Thus:

Sin 28° = opp/hyp

Sin 28° = HJ/20 (Alex's equation is correct).

Solving further, we would have:

HJ = Sin 28 * 20 ≈ 9.4

✔️Another way is by using <H as the reference angle.

m<H = 180° - (90° + 28°) (sum of triangle)

m<H = 62°

Adjacent side to reference angle (<H) = HJ

Hypotenuse = 20

Apply CAH:

Cos 62° = Adj/Hyp

Cos 62° = HJ/20 (Marlene's equation is correct)

Solving further, we would have,

HJ = Cos 62° * 20 ≈ 9.4

As you can see, the equation of both students are correct. Both would arrive at the same answer using any of the two equations.

8 0
3 years ago
Guys.<br>Can you please helo me with this?
faust18 [17]
Slope is -1/4 and the y intercept is -1.5
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3 years ago
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