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pickupchik [31]

3 years ago

8

What inequality represents the verbal expression? All real numbers less than 69.

1 answer:

Andru [333]3 years ago

3 0

<span><span><u>Answer</u>
x<69 (Where x represent a real number).

</span><span><u>Explanation</u>
</span><span>An inequality in mathematics is a relationship between two numbers or expressions.
It can be ≥,≤,< or even >.
≥mean greater than or equal to.
≤means less than or equal to
<means less than
>means greater than
Now to answer the question, all real numbers less than 69.
</span>x<69<span> (Where x represent a real number).
</span></span>

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Y = 15x <br> y = 25 + 12.5x

swat32

Substitute y = 15x to the equation y = 25 + 12.5x:

15x = 25 + 12.5x <em>subtract 12.5x from both sides</em>

2.5x = 25 <em>divide both sides by 2.5</em>

x = 10

Substitute the value of x to the equation y = 15x:

y = (15)(10)

y = 150

<h3>Answer: x = 10 and y = 150</h3>

7 0

3 years ago

Dwayne drove 18 miles to the airport to pick up his father and then returned home. On the return trip he was able to drive an av

Nesterboy [21]

Answer:

30 mph

Step-by-step explanation:

Let d = distance (in miles)

Let t = time (in hours)

Let v = average speed driving <u>to</u> the airport (in mph)

⇒ v + 15 = average speed driving <u>from</u> the airport (in mph)

Using: distance = speed x time

$\implies t=\dfrac{d}{v}$

Create two equations for the journey to and from the airport, given that the distance one way is 18 miles:

$\implies t=\dfrac{18}{v} \ \ \textsf{and} \ \ t=\dfrac{18}{v+15}$

We are told that the total driving time is 1 hour, so the sum of these expressions equals 1 hour:

$\implies \dfrac{18}{v} +\dfrac{18}{v+15}=1$

Now all we have to do is solve the equation for v:

$\implies \dfrac{18(v+15)}{v(v+15)} +\dfrac{18v}{v(v+15)}=1$

$\implies \dfrac{18(v+15)+18v}{v(v+15)}=1$

$\implies 18(v+15)+18v=v(v+15)$

$\implies 18v+270+18v=v^2+15v$

$\implies v^2-21v-270=0$

$\implies (v-30)(v+9)=0$

$\implies v=30, v=-9$

As v is positive, v = 30 only

So the average speed driving to the airport was 30 mph

(and the average speed driving from the airport was 45 mph)

8 0

1 year ago

Read 2 more answers

Which two expressions have the same value?<br> 1. 23-82<br> 2. 23 - (8 x 2)<br> 3. (23 -8) x 2

Elza [17]

Answer:

Any expression doesn't have the same value

Step-by-step explanation:

<h3>1. 23-82</h3>

Subtract 82 from 23.

−59

<h3>2. 23 - (8 x 2)</h3>

Simplify each term.

Multiply 8 by 2.

23−1⋅16

Multiply −1 by 16.

23−16

Subtract 16 from 23.

7

<h3>3. (23 -8) x 2</h3>

Subtract 8 from 23.

15⋅2

Multiply 15 by 2.

30

<h2>Hope it is helpful.....</h2>

6 0

2 years ago

Два фермена пробовали яблоки на ярмарке. Первый продовал в ящиках по15 кг по цене 90леев за ящик а второй в покетах по2 кг по це

Marina86 [1]

Answer:

could you translate it

Step-by-step explanation:

8 0

2 years ago

HELP ME WITH QUESTION 5 AND 6 PLEASEEE I DONT UNDERSTAND IT???

Ilya [14]

I would need to have the same book and go to page 73 to be able to answer it. By the way, do you have any friends that have the answer?

7 0

2 years ago