All categories

2 years ago

Is (–3, 6) a solution to this system of equations? 10x − 5y = 16 x + y = 3

Mathematics

1 answer:

nalin [4]2 years ago

3 0

wellllllllllll when you plug in (-3) for x and (6) for y

10(-3)-5(6)=16

-30-30=16

-60=16

as you can see -60 is not equal to 16 so that means (-3,6) is not a solution :)

there is not point in trying the second equation cause we already know it is false :))

You might be interested in

Quadrilateral ABCD has the following vertices.

Marizza181 [45]

A(-5,5)
B(4,5)
C(2,0)
D(-5,-2)

AB,BC,CD,DA

AB = [4-(-5)),5-5]=[9,0]
Lenght $AB= \sqrt{9^2+0^2}= \sqrt{81} =9$

BC = [2-4,0-5]=[-2,-5]
Lenght $BC=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}$

CD = [-5-2,-2-0]=[-7,-2]
Lenght $CD=\sqrt{(-7)^2+(-2)^2}=\sqrt{49+4}=\sqrt{53}$

DA =[-5-(-5),-2-5]=[0,-7]
Lenght $DA=\sqrt{0^2+(-7)^2}=\sqrt{49}=7$

sorted from longest to shortest:
AB, CD,DA,BC
$\sqrt{81}, \sqrt{53}, \sqrt{49}, \sqrt{29}$

3 0

2 years ago

Which trigonometric ratio represents Sine (sin)?

saul85 [17]

the hypotenuse (cos = adj/hyp).
the hypotenuse (sin = opp/hyp).
the hypotenuse (tan = opp/adj).

hope this helps........

7 0

2 years ago

Plz help asap!!!! Systems of equations answer #2 and #3

Tresset [83]

Answer:

rule add 15 subtract 10

Step-by-step explanation:

rule add 15 subtract 10. rule add 15 subtract 16

4 0

2 years ago

Judging from past basketball games, the probability that you make a free throw is 4/5. If you get 220 attempts this season, how

Artyom0805 [142]

Answer: 176 free throws

Step-by-step explanation: 4/5 = 80% 80% of 220 = 176

3 0

2 years ago

Find the area of the shaded sector of the circle

attashe74 [19]

Answer:

48pi or ~150.8

Step-by-step explanation:

ok so area = pi * r^2

r = 8

8^2 = 64pi

so 64/4 = 16

16*3 quarters shaded = 48

48pi is the answer

48pi or ~150.8

4 0

2 years ago