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3 years ago

PLEASE HELPP URGENT 20 points!!!

Mathematics

1 answer:

MAVERICK [17]3 years ago

8 0

If you're talking about the second part of the question where it asks you which facts you included in your answer, you can choose any of them and it will be counted right.

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Which operations is the following set closed under: {... , -3, -1, 1, 3, ...}?

Ganezh [65]

Not addition, since $-1+1=0$ and 0 doesn't belong to the set.

Not subtraction, since $1-1=0$ .

It is closed under multiplication. The set appears to contain all non-zero multiples of 3.

Not division, since dividing some of the numbers results in rationals which do not belong to the set.

What other operations are you supposed to consider?

5 0

3 years ago

Read 2 more answers

(1/3) a = -5 What does a equal?????????????????????????????????????????????????????

KiRa [710]

Answer:

minus 15

Step-by-step explanation:

times the bottom by the right hand side

6 0

3 years ago

What do we call a polynomial with 5 terms

Dafna11 [192]

Answer:

You call an expression with a single term a monimial, an expression with two terms is a binomial and an expression with three terms is a trinomial. An expression with more than three terms is named simply by it's number of terms. For example a polynomial with five terms is called a five-term polynomial.

Step-by-step explanation:

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3 years ago

The line plot shows the measurement of liquids in eight identical beakers. If you wanted to put the same amount of liquid in eac

yarga [219]

To find the amount of liquid that would be in each beaker, you would need to calculate the mean, or the average.

To do this you would create the following data set from your line plot.

1/8, 1/4, 3/8, 3/8, 3/8, 3/4, 3/4, 1

You would then add all these together and divide by 8.

4/8 = 1/2

The answer is B, 1/2 ml in each.

6 0

3 years ago

a zoo is building a new giraffe exhibit and needs to fence an outdoor triangular area, with the barn forming one side of the tr

konstantin123 [22]

Answer:

Yes, the zoo needs to order more fencing. The zoo has 54 ft of fence remaining for the unknown side.

If the unknown side is assumed to have this length, sin (θ) = 1.2857. which is not possible, so the triangle cannot be formed.

Step-by-step explanation:

Let a be the length of the third side of the triangle.

a = 127 - 73 = 54 ft

Let the angle that a makes with the barn be θ

The diagram of this question is attached to this solution.

Using the sine rule, we can examine if the remaining fencing material would be enough by checking if (sin θ) is realistic.

Using sine rule,

[a/(sin 72°)] = [73/(sin θ)]

[54/sin 72°] = [73/sin θ]

sin θ = (73 × sin 72°)/54 = 1.2857

sin θ = 1.2857

This is obviously not a realistic value for sin θ since it is known that sin θ ranges between 0 and 1.

The 54 ft is obviously not enough.

Hence, the zoo needs more fencing material to be able to complete the outdoor triangular giraffe exhibit.

Hope this Helps!!!

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3 years ago