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ella [17]
3 years ago
10

Which statements are true about the ordered pair (−1, 5) and the system of equations?

Mathematics
2 answers:
Rudiy273 years ago
7 0
An ordered pair (x,y) is a solution to a system of equations if it makes all the equations true.
Let's check whether (–1, 5) makes the equations true.
Plugging –1 in the first equation for x and 5 in for y, we get
–1 + 5 = 4: TRUE
 Plugging –1 in the second equation for x and 5 in for y, we get
–1 – 5 = –6: TRUE

Since it makes both the equations true, it's a solution to the system of equations. So the answer choice is D, the 4th one. 
Elodia [21]3 years ago
6 0

Answer:

you answer would be A,B,D there all the answer u cant just have one also I

just took the test im from k12

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Piper went to the store to buy some apples. The price per pound of the apples is $5.25 per pound and she has a coupon for $4.75
Oduvanchick [21]
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8 0
3 years ago
Flying against the wind, an airplane travels 4620 kilometers in 7 hours. Flying with the wind, the same plane travels 8640 kilom
nordsb [41]

The rate of the plane in still air is 870km/h and the rate of the wind 210km/h.

<h3>What is speed?</h3>

Speed has the dimensions of distance divided by time.

Let Speed of airplane be x km/h and Speed of Wind be y km/h

Speed direction of wind (x+y)

Speed in opposition of wind (x-y)

Now, using speed x time= distance

7( x-y)=4620

(x-y)=4620/7

=660------------------(1)

Similarly,

8(x+y)=8640

(x+y) =8640/8=1080-----------------------(2)

Adding (1) and (2)

2x=1740

x=870 km/h

Subtracting (1) from (2)

2y=420

=>y=210 km/h

So rate of airplane =870km/h

rate of wind=210km/h

Learn more about this concept here:

brainly.com/question/16970943

#SPJ1

6 0
1 year ago
Expand (2x+5)give answer plz<br>​
emmasim [6.3K]

Answer:

2(x+5)

not sure but this is what I got

7 0
2 years ago
Un técnico de reparaciones de electrodomésticos cobra 25 € por la visita, más 20 € por cada hora de trabajo. A) Escribe la expre
maxonik [38]

Answer:

x= 25+20y

Step-by-step explanation:

De acuerdo a la situación planteada, la expresión algebraica debe indicar que 25€ que es el valor por la visita más 20€ multiplicado por el número de horas trabajadas es igual al dinero total que se debe pagar. La expresión es:

x= 25+20y, donde

x= valor total a pagar

y= número de horas trabajadas

5 0
3 years ago
What number multiplied by 3/5 has a product of 1
Fofino [41]

Answer:

1.66666667

Step-by-step explanation:

Just reverse it

3/5 which equals to .60

divide 1 by .60 which should give u ur answer 1.66666667

5 0
2 years ago
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