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stich3 [128]
3 years ago
14

Plz ASAP

Mathematics
1 answer:
kirza4 [7]3 years ago
7 0

forget the numerator of the fraction for now; the x to-the-power    -3/6    is equal to x to-the-power    -1/2    -- x^(-1/2)

use the rule a^-b= 1/(a^b)

to get:     x to-the-power  -(-1/2) which = x^1/2

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31. Algebra Fill in the reason that justifies each step.
Anna11 [10]

Answer:

Step-by-step explanation:

<u>Statements    </u>                                   <u>  Reasons</u>

1) QS =42                                               Given

2) QR + RS = QS                              Segment Addition Postulate

3) (x + 3) + 2x = 42                            Substitution Property

4) 3x + 3 = 42                                      Simplify

5) 3x = 39                                          Subtraction Property of Equality

6) x=13                                               Division Property of Equality

Explanation:

We have given QS=42. We have to prove that x=13

We will use Segment Addition Postulate which states that given 2 points Q and S, a third point R lies on the line segment QS  if and only if the distances between the points satisfy the equation QR + RS = QS.

Then we will substitute the values in the defined postulate.

where QR= x+3

RS=2x

QS=42

QR+RS=QS

(x+3)+2x= 42

Now simplify the expression by opening the brackets.

x+3+2x=42

3x+3=42

Now subtract 3 from both sides.

3x+3-3=42-3

3x=39

divide both sides by 3.

3x/3 =39/3

x=13..

4 0
3 years ago
Help me with the whole page plz
Airida [17]

Answer:

150 students.

No

.20

3/10

Step-by-step explanation:

What you do for the first one is you take 1,500 and times it by 90%. You will get 1,350. You will then take the 1350 and minus it from 1500 to get 150 students.

The next one says that he drilled a hole that is 5/9 inches wide. He has a drill bit that is 5/6. Will the drill bit be big enough. No because 5/9 is .556 and 5/6 is .833.

For the next one all they want you to do is look at the fruit percentage and put it into a decimal which is .20.

The next one they want the fraction that represents 30% which is 3/10.

8 0
3 years ago
Rosa earns $12 per hour. In 7.5 hours, she will earn x dollars. Which is a valid proportion that can be used to solve the proble
Tamiku [17]

Answer:

StartFraction x over 7.5 EndFraction = StartFraction 12 over 1 EndFraction

Step-by-step explanation:

Here, in this question, given that Rosa earns $12 in an hour, she earns x dollars in 7.5 hours. So we are interested in finding the value of x.

Let’s write this in terms of proportion;

$12 = 1 hour

$x = 7.5 hours

$12 * 7.5 hours = $x * 1 hour

So this can be rewritten as;

$x/7.5 = $12/1 hour

5 0
3 years ago
Read 2 more answers
A class was conducting a series of probability experiments.
leva [86]
I believe the answer would be B, since both situations give you 6 chances at drawing/rolling the right number/marble.
6 0
2 years ago
Which inequality is true?<br> 8/5 &lt;9/10 <br> 1&gt;6/5<br> 5/2&lt;2 1/2<br> 8/4&lt;5/2
AleksandrR [38]

Answer:

the last one : 8/4 < 5/2

Step-by-step explanation:

7 0
3 years ago
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