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2 years ago

The real numbers between -1 and 1, inclusive. Use set builder notation

Mathematics

1 answer:

NemiM [27]2 years ago

8 0

The correct notation is: x ∈ [-1, 1]

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you are traveling to an island that is accesible only by boat. you plan to take one boat there and a different boat back. You'll

weqwewe [10]

$\text{Answer: }\text{Distance traveled by steamboat}=20\text{ knots}\\\text{Distance traveled by yacht }=20+20=40\text{ knots}$

Step-by-step explanation:

Since we have given that

Time taken by steamboat makes the trip=5 hours

Time taken by yacht makes the trip =2.5 hours

Since we have also given that

the yacht is 20 knots faster than the steamboat,

So let the speed of steamboat be x

Let the speed of yacht be x+20

Now, we have given that both boats will travel the same distance ,

So,

$\text{Distance traveled by steamboat}=\text{ Distance traveled by yacht}\\\\x\times 5=(x+20)\times 2.5\\\\5x=2.5x+50\\\\5x-2.5x=50\\\\2.5x=50\\\\x=\frac{50}{2.5}\\\\x=20\text{ knots}$

Hence,

$\text{Distance traveled by steamboat}=20\text{ knots}\\\text{Distance traveled by yacht }=20+20=40\text{ knots}$

7 0

2 years ago

Write the letter in the box that correctly describes the three dimensional figure.

Nataliya [291]

A, D for pyramid and B, and C for prism

6 0

3 years ago

Read 2 more answers

An engineer makes different-size samples of a new material.

miv72 [106K]

Answer:

The mass of 100 cubic centimeters of the material would be

1,000 grams.

The mass of 500 cubic centimeters of the material would be

5,000 grams.

Step-by-step explanation:

3 0

3 years ago

Which expression is equivalent to this polynomial?<br> (4x + 3)(3x - 8)

abruzzese [7]

Answer:

I resolve the expression

(4x+3) (3x-8)=12x2-32x+9x-24

12x2-23x-24

the polynomial (4x+3) (3x-8) is equivalent a the expression 12x2-23x-24

7 0

2 years ago

14 divided by 3 (27-11) x 3

stira [4]

14 ÷3 (27-11) x 3 = 224

4 0

3 years ago