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2 years ago

Write 21/23 as a decimal rounded to the nearest tenth.

Mathematics

1 answer:

n200080 [17]2 years ago

6 0

Answer:

0.9

Step-by-step explanation:

21 ÷ 23 = 0.913

Round to the nearest tenth = 0.9

Hope this helps!

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Make greatest and smallest possible 7- digit number from 4,7,1,9,0,6,7

Xelga [282]

Answer:

greatest 9776410 smallest 1046779

Step-by-step explanation:

in smallest we cannot write 0 first because 0 has no units

7 0

2 years ago

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A teacher pays $39 for 10 books.What is the unit price of each book?

zheka24 [161]

To find the cost of each book, you need to divide the money spent on all of the books by the number of books.

$39 / 10 = $3.90 per book

8 0

3 years ago

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What does x+x+x+x+x-1+1+1+1= ?<br><br> (Giving this for 30 points)

77julia77 [94]

First, let's add all the x's.

x + x + x + x + x = 5x

5x - 1 + 1 + 1 + 1

Now, let's add together all the 1's that are being added (not the 1 that is being subtracted from 5x).

1 + 1 + 1 = 3

5x - 1 + 3

3 - 1 = 2

5x + 2

There's no way you can actually solve this unless you know the value of x; without x's value, this is as simplified as the expression is going to get.

Hope this helps!

7 0

2 years ago

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Many four-door cars are about 15 feet long.how many of these cars would you have to line up to equal the length of a megaloden.i

Mamont248 [21]

60/15 cars, 4 cars Hope this helped!!! :)

4 0

2 years ago

Please help me out!!!!!

Neko [114]

Given:

The zeros of the polynomial are $-2,\pm 5,4$ .

Degree = 4

Leading coefficient = 1

To find:

The polynomial.

Solution:

If c is a zero of a polynomial, then (x-c) must be a factor of the polynomial.

Here, -2,4,-5, 5, are zeros of the required polynomial, so (x+2), (x-4), (x+5), (x-5) are factors of required polynomial.

$p(x)=(x+2)(x-4)(x+5)(x-5)$

$p(x)=(x^2-4x+2x-8)(x^2-5^2)$ $[\because a^2-b^2=(a-b)(a+b)]$

$p(x)=(x^2-2x-8)(x^2-25)$

Using distributive property, we get

$p(x)=x^2(x^2-25)-2x(x^2-25)-8(x^2-25)$

$p(x)=x^4-25x^2-2x^3+50x-8x^2+200$

On combining like terms, we get

$p(x)=x^4-2x^3+(-25x^2-8x^2)+50x+200$

$p(x)=x^4-2x^3-33x^2+50x+200$

Here, the leading coefficient is 1. So, it is the required polynomial.

Therefore, the correct option is E.

3 0

2 years ago