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3 years ago

Identify the rational numbers as positive or negetive -1/-7

Mathematics

2 answers:

mash [69]3 years ago

8 0

Positive -1/-7

Negative +4/-5

Negative +1/-7

Positive +1/+7

Negative -4/-5

Negative -4/+5

Negative -1/+7

Positive +4/+5

I might be wrong

WINSTONCH [101]3 years ago

5 0

N hkckgdjgdkhfkhcjjggj

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<img src="https://tex.z-dn.net/?f=%5Clfloor%5Cdfrac%7Bx%5E2%2B1%7D%7B10%7D%5Crfloor%2B%5Clfloor%5Cdfrac%7B10%7D%7Bx%5E2%2B1%7D%5

GrogVix [38]

Answer:

See below

Step-by-step explanation:

This equation is solved if one of the following 2 conditions is met

(x² + 1) / 10 is between 1 and 2

and

10 / (x² + 1) is between 0 and 1

<u>Solve this:</u>

1 < (x² + 1) / 10 < 2
10 < x² + 1 < 20
9 < x² < 19
3 < |x| < √19
x ∈ (- √19, - 3) ∪ (3, √19)

0 < 10 / (x² + 1) < 1
x² + 1 > 10
x² > 9
|x| > 3

Solution for this case is x ∈ (- √19, - 3) ∪ (3, √19)

(x² + 1) / 10 is between 0 and 1

and

10 / (x² + 1) is between 1 and 2

<u>Solve this:</u>

0 < (x² + 1) / 10 < 1
0 < x² + 1 < 10
- 1 < x² < 9
0 ≤ |x| < 3
x ∈ ( - 3, 3)

1 < 10 / (x² + 1) < 2
x² + 1 < 10 ⇒ x² < 9 ⇒ |x| < 3
x² + 1 > 5 ⇒ x² > 5 ⇒ |x| > √5

Solution for this case is x ∈ (- 3, - √5) ∪ (√5, 3)

8 0

3 years ago

If g(x) = 1/2x + 9, what is (g) 6

Damm [24]

Answer:

g(6) = 12

Step-by-step explanation:

g(x) = 1/2x + 9

To find g(6), replace x with 6 in the expression and evaluate it.

g(6) = 1/2 * 6 + 9

g(6) = 3 + 9

g(6) = 12

6 0

3 years ago

Read 2 more answers

hot 'n spicy soup cost $2.39 a can brand x soup cost $1.39 a can wich cost more and what is the difference

Solnce55 [7]

Hot 'n Spicy soup costs $1 more.

4 0

3 years ago

How do I solve for v?

lawyer [7]

Answer: 18 = V

Step-by-step explanation: What you do is take the answer and subtract 8 from it. That's V! You can even check it by putting 18 over the V and adding.

6 0

4 years ago

solve for a dairy needs 275 gallons of milk containing 5% butterfat. how many gallons each of milk containing 7% butterfat and m

Kazeer [188]

X = gallons of the 7% butterfat milk

y = gallons of the 2% butterfat milk

now, we'll be adding "x" gallons of the 7% one, but we know that, is really "x" gallons, but only 7% of it is butterfat, the rest is water and other subtances.

so, in "x" gallons, how many gallons is butterfat only anyway? namely, what is 7% of "x"? well, (7/100) * x, or 0.07x.

likewise, how many gallons of butterfat are in the 2% one? well, (2/100) * "y" or 0.02y.

we know that, whatever "x" and "y" add up to 275 gallons, thus x + y = 275.

we also know that, the butterfat amounts add up to the same butterfat in the 275 gallons, thus

$\bf \begin{array}{lccclll}
&\stackrel{gallons}{amount}&\stackrel{butterfat~\%}{quantity}&\stackrel{butterfat~gallons}{quantity}\\
&------&------&------\\
\textit{7\% butterfat milk}&x&0.07&0.07x\\
\textit{2\% butterfat milk}&y&0.02&0.02y\\
--------&------&------&------\\
mixture&275&0.05&13.75
\end{array}$

$\bf \begin{cases}
x+y=275\implies \boxed{y}=275-x\\
0.07x+0.02y=13.75\\
----------\\
0.07x+0.02\left( \boxed{275-x} \right)=13.75
\end{cases}
\\\\\\
0.07x-0.02x+5.50=13.75\implies 0.05x=8.25
\\\\\\
x=\cfrac{8.25}{0.05}\implies x=165$

how much will it be of the 2% milk? well, y = 275 - x.

7 0

3 years ago