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stiks02 [169]
4 years ago
7

Help are the answers right what are the others

Mathematics
1 answer:
sineoko [7]4 years ago
8 0
yes they are correct if you need anymore help please ask us
You might be interested in
|2x − 1| = |4x + 9| please solve these i want hurryly
shepuryov [24]

Answer:

\boxed{\sf \ the \  solutions \  are \ -5  \ and \  -4/3 \ }

Step-by-step explanation:

Hello,

we need to find x so that

|2x-1|=|4x+9|

and we know that |x|=x if x >= 0 -x otherwise

2x-1=0 <=> 2x=1 <=> x = 1/2

4x+9=0 <=> 4x=-9 <=> x = -9/4

So we need to work in three different intervals

case 1: x <= -9/4 ( <= 1/2)

so |2x-1| = -(2x-1) = -2x+1

and |4x+9| = -4x-9

so we need to solve -2x+1=-4x-9<=> 2x=-9-1=-10 <=> x = -5

case 2: -9/4 <= x <= 1/2

so |2x-1| = -(2x-1) = -2x+1

and |4x+9| = 4x+9

so we need to solve -2x+1=4x+9<=> 6x=1-9=-8 <=> x = -8/6 = -4/3

case 3: -9/4 <= 1/2 <= x

so |2x-1| = 2x-1

and |4x+9| = 4x+9

so we need to solve 2x-1=4x+9<=> 2x=-1-9=-10 <=> x = -10/2 = -5

Finally, the solutions are -5 and -4/3

to verify, you can see below the graph of the two functions

3 0
3 years ago
Melissa holds two jobs. In Job A she earns $14 per hour, and in job B she earns $12.50 per hour. One week Michelle worked a tota
DIA [1.3K]
Let x= hours spent job A
let y= hours spent job B

14x + 12.50y = 600
x + y = 45
x=-y +45
14(-y+45) + 12.5y = 600
-14y + 630 + 12.5
-1.5x + 630 = 600
-1.5x=-30
x=20

(20) + y = 45
y= 25
20 hours job A, 25 hours job B
7 0
4 years ago
A salesperson sold a car for $18,250 and their commission is $693.50 .What percentage of the sale price is their commission?
Fittoniya [83]
The percentage commission of the sale price will be found as follows:
Selling price=$18,250
Commission received=$693.5

%ge commission= (commission)/(selling price)×100
                           =693.5/18250×100
                           =3.8%
Answer: 3.8% commission
4 0
3 years ago
What is another way to summarize this proof?
Makovka662 [10]

Another way to summarize this proof is to say vertical angles are congruent.

<h3>Vertical angles</h3>

Lines are shortest distance between two point and angles are forned from the intersection of two lines.

From the given figure, they are trying to prove that the angles ANR and VNE are equal. Since these angles are formed at the point of intersection, hence another way to summarize this proof is to say vertical angles are congruent.

Learn more on vertical angles here: brainly.com/question/14362353

#SPJ1

5 0
2 years ago
What integer does the arrow indicate?
Vsevolod [243]

Answer:

-9

Step-by-step explanation:

Given

See attachment for number line

Required

What does the arrow integer

Represent the value of the arrow with x.

The arrow is on number -9.

This number is what the arrow represents.

Hence:

x = -9

8 0
3 years ago
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