2 years ago

2x+5y =-20, 2x-3y=28

Mathematics

2 answers:

RideAnS [48]2 years ago

6 0

Answer:

x=5 and y=-6

Step-by-step explanation:

2(5) + 5(-6) = -20 (so true)

and

2(5) - 3(-6) = 28 (true)

Wittaler [7]2 years ago

4 0

Answer:

2x=-20-5y

divide both sides by 2

x=-20-5y/2

2x-3y=28

-3y=28-2x

divide both sides by -3

y=28-2x/-3

Step-by-step explanation: FOR THE FIRST ONE, I MADE X THE SUBJECT AND FOR THE SECOND ONE I MADE Y THE SUBJECT.

You might be interested in

الاسلاميه والارياضيات

Naddika [18.5K]

Don't understand I speak English

5 0

3 years ago

Pls help this is due in 2mins

worty [1.4K]

Answer:

45 dimes

Step-by-step explanation:

66 nickels = 66 x $0.5 = $3.30

$7.80 - $3.30 = $4.50

$4.50 / $0.10 = 45

4 0

3 years ago

Help Me On This!!<br><br><img src="https://tex.z-dn.net/?f=%20%5C%5C%20%20%5C%5C%20%20%5C%5C%20" id="TexFormula1" title=" \\ \\

salantis [7]

Answer:

First Find the Radius of Cake by dividing 40/2

Now Find Area of the cake of Bottom

And Then Use the Formula to calculate volume of Circle

Cross Section Area=π Square

Bole of Circle 4/3π× radius cube

8 0

2 years ago

Read 2 more answers

Which triangle’s area would be calculated using the trigonometric area formula?

kati45 [8]

Answer:

Triangle Q R P is shown. The length of Q R is 5 and the length of R P is 6. Angle Q R P is 40 degrees.

Step-by-step explanation:

The trigonometric formula refers the two sides length of the triangle and it also consists of included angle to find out the area

A = $\frac{1}{2}$ ab sin C

QPR contains two sides and the included angle

XYZ has one side and the two angles

DEF has only three sides

And, the ABC contains two sides but does not have the included angle

Based on the explanation above, the correct option is B

7 0

3 years ago

Read 2 more answers

Can someone please please help me out :)

Valentin [98]

Graph one: A01- 100 miles
A03 (a)- 50

8 0

2 years ago