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slavikrds [6]
2 years ago
5

2x+5y=-13 3x-5y=14 Solve for x and y

Mathematics
2 answers:
joja [24]2 years ago
6 0

Answer:

x= 1/5

y= −67/25

Step-by-step explanation:

If you need help with these sorts of problems, go to math papa.

Insert a question... for example, this question you would type in

"2x+5y=-13;3x-5y=14"

This helps a bunch with a variety of math questions. I also recommend using mathaway!

Lemur [1.5K]2 years ago
4 0

Answer:

I got x= 1/5 and y= -67/25 (sorry if it is wrong)

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Can someone help me with this please, I would really appreciate it, thank you!<br> (Geometry)
Ira Lisetskai [31]

Answer:

  a.  B

  b.  4

  c.  BD

Step-by-step explanation:

a. Point A is at -7; point D is at +1. The distance between these points is ...

  1 -(-7) = 8

The midpoint will be 8/2 = 4 units from either end so will be at ...

  A +4 = -7 +4 = -3

or

  D -4 = 1 -4 = -3

The point located at -3 is point B, the midpoint of AD.

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b. Having done the above calculations, we know that segment AB is 4 units long.

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c. We also know that segment BD is 4 units long. That is because the midpoint divides a segment into two equal parts.

6 0
2 years ago
Which is greater |60| or |-60|
Aneli [31]

Answer:

They are both equal

Step-by-step explanation:

60 stays 60, and -60 converts to 60, so they are both 60

60=60

Hope it helped!~❤️

6 0
3 years ago
Read 2 more answers
your final balance on an investment of 270$ invested at 10% was $459.00, For what period of time did you invest?
harkovskaia [24]

Answer:

n= 5.57 years

Step-by-step explanation:

Giving the following information:

your final balance on an investment of 270$ invested at 10% was $459.00

<u>To calculate the time passed between values, we need to use the following formula:</u>

n= ln(FV/PV) / ln(1+i)

FV= 459

PV= 270

i= 0.1

n= ln(459/270) / ln (1.1)

n= 5.57 years

4 0
2 years ago
Simplify the first expression 5(m+1)-1=
Olegator [25]

Answer:

-0.8/ -4/5

Step-by-step explanation:

5(m+1) -1 = 0

5m +5 -1 = 0

5m +4 =0

5m= -4

m= -4/5

8 0
2 years ago
.
jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

100\%=100/100=1

20\%=20/100=0.20

60\%=60/100=0.60

we know that

(1)(x)+(0.20)(3)=(0.60)(x+3)

solve for x

x+0.60=0.60x+1.80

x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in  order to get a 60% acid solution

7 0
3 years ago
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