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katovenus [111]
4 years ago
10

Right answers plzzzz

Mathematics
2 answers:
Andrew [12]4 years ago
5 0
D.  

a. 

b. 

hope that helped
xz_007 [3.2K]4 years ago
3 0
D, A, B.........................dab
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Urgent <br> find the values of x and y 8x+5y=-5 7x-3y=3
german

Answer:

x= 0, y= -1

Step-by-step explanation:

To obtain the values of x and y from a system of equations, start by labelling the given equations.

8x +5y= -5 -----(1)

7x -3y= 3 -----(2)

Let's solve by elimination.

Here, I will be working to eliminate the y term. This is done by ensuring both equations have the same numerical value in the coefficient of y.

(1) ×3:

24x +15y= -15 -----(3)

(2) ×5:

35x -15y= 15 -----(4)

Add the two equations together since the coefficient of y has opposite signs.

(3) +(4):

24x +15y +35x -15y= -15 +15

59x= 0

Divide both sides by 59:

x= 0

Now, substitute the value of x into any equations to find the value of y.

Substitute x= 0 into (1):

8(0) +5y= -5

5y= -5

Divide both sides by 5:

y= -5 ÷5

y= -1

Additional:

For similar questions on system of equations, do check out the following!

  • brainly.com/question/4346392

6 0
2 years ago
Twice one number plus a second number is 42 and the first number is 4 more than 3 times the second
MatroZZZ [7]

Answer / Step-By-Step Explanation:

<em>"Twice one number plus a second number is 42."</em>

2x + y = 42

y = -2x + 42

<em>"The first number is 4 more than 3 times the second."</em>

x - y = -6

x - (-2x + 42) = -6

x + 2x - 42 = -6

3x = 36

First number: x = 12

Second Number: y = -2 (12) + 42 = -24 + 42 = 18

2 × 12 + 18 = 42

(24 + 18 = 42)

Hope this helps!

8 0
4 years ago
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sixteen of 80 dogs in a rescue kennel are puppies. what percent of the dogs in the kennel are puppies
KATRIN_1 [288]

20 percent the ratio is 16 over 80 multiplied by 100 over 1

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4 years ago
The three sides of a triangle are in the ratio 2:4:5. if the shortest side of the triangle is 4 meters long, find the perimeter.
strojnjashka [21]
2 : 4 : 5
*2 *2 *2
4 : 8 : 10
4+8+10=22
The triangle is 22 meters long.
7 0
4 years ago
Type in the correct number for the reduced form of the fraction 25/100, then click the Check Answer button.
Leni [432]
The correct answer would be 1/4th
3 0
3 years ago
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