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Sindrei [870]
3 years ago
13

On Monday, Jason ran x miles. On Tuesday, he ran 5 fewer miles than on Monday. The total number of miles Jason ran over these tw

o days can be found using 2x−5 .
What does the "2" represent in the expression 2x−5 ?


the number of miles Jason ran on Tuesday

how many fewer miles Jason ran on Tuesday

the total number of miles ran

the number of days
Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0

Answer:

The number of days

Step-by-step explanation:

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There is a triangle with a perimeter of 63 cm, one side of which is 21 cm. Also, one of the medians is perpendicular to one of t
NemiM [27]

Answer:

21cm; 28cm; 14cm

Step-by-step explanation:

There is no info in the problem/s  text which one of the triangle's  side is 21 cm. That is why we have to try all possible variants.

Let the triangle is ABC . Let the AK is the angle A bisector and BM is median.

Let O is AK and BM cross point.

Have a look to triangle ABM.  AO is the bisector and AOB=AOM=90 degrees (means that AO is as bisector as altitude)

=> triangle ABM is isosceles => AB=AM  (1)

1. Let AC=21   So AM=21/2=10.5 cm

So AB=10.5 cm as well.  So BC= P-AB-AC=63-21-10.5=31.5 cm

Such triangle doesn' t exist ( is impossible), because the triangle's inequality doesn't fulfill.  AB+AC>BC ( We have 21+10.5=31.5 => AB+AC=BC)

2. Let AB=21 So AM=21 and AC=42 .So  BC= P-AB-AC=63-21-42=0 cm- such triangle doesn't exist.

3. Finally let BC=21 cm. So AB+AC= 63-21=42 cm

We know (1) that AB=AM so AC=2*AB.  So AB+AC=AB+2*AB=3*AB

=>3*AB=42=> AB=14 cm => AC=2*14=28 cm.

Let check if this triangle exists ( if the triangle's inequality fulfills).

BC+AB>AC    21+14>28 - correct=> the triangle with the sides' length 21cm,14 cm, 28cm exists.

This variant is the only possible solution of the given problem.

6 0
3 years ago
(20 points) Simplify The Expression with work/steps<br><br> (8+3i) + (-2+ i)
zimovet [89]

Given the expression (8+3i)+(-2+i)

We need to simplify it.

(8+3i)+(-2+i)

First we have to remove the parenthesis.

8+3i-2+i

As we know that multiplication of positive and negative is negative.

Now we will add or subtract like terms. Like terms means here i with i and constant term with constant term. So here we will add 3i and i. Also subtract 2 from 8.

8-2 +3i+i

6+4i

We have got the required answer.

The simplified answer is 6+4i.

6 0
3 years ago
Can someone get this for more ​
JulsSmile [24]

Answer:

TU= 8

WU=10

TX=5

TV=10

Step-by-step explanation:

4 0
3 years ago
there are 48 students participating in a debateing tournament each team has 3 students how many debating teams are there
babymother [125]

Hello!

Let's divide our 48 students among groups of 3 students below.

48/3=16

Therefore, there are 16 debating teams.

I hope this helps!

3 0
3 years ago
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Find the percent increase. From $5.00 to $9.00
Bess [88]
The percent increase from $5.00 to $9.00 would be 80.00%
6 0
3 years ago
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