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kolbaska11 [484]
3 years ago
15

How do you solve 3x+3y=-15 and -3x+y=3

Mathematics
1 answer:
Lilit [14]3 years ago
3 0

Answer:

Step-by-step explanation:

Substitute x and y values for zero. Or

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Given that y varies directly with x, find the equation of direct variation.<br> x is 14 when y is 12
Sergeu [11.5K]

Step-by-step explanation:

x×k = y

14×k = 12

k = 12/14 = 6/7

so, the equation is

x × 6/7 = y

or

y = 6x/7

or

y = 6/7 x

5 0
2 years ago
[ ( 3+4) - ( 1:2 x 3.1 ) ] + 4
Vikki [24]

Answer:

3.75, 14.85, and 0.89

6 0
3 years ago
(60 + 10)<br> 130<br> Solve for a
forsale [732]

Answer:

Step-by-step explanation:

here you go mate'

step 1

(60 + 10)130  equation

step 2

(60 + 10)130  simplify with the brackets

step 3

130(70)  multiply the numbers

answer

9100

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3 years ago
Three of Santas helpers are a combined height of 11 feet and 6 inches. Clem is 15 inches shorter than Clyde who is 6 inches tall
Tresset [83]

Answer:

Clem's Height =38 Inches

Clyde's Height= 53 Inches

Chloe's Height = 47 Inches

Step-by-step explanation:

Let Clem's height be x, Clyde's height be y and Chloe's height be z

As given

x+y+z=11 feet 6 inches

As 1 Foot= 12 Inches so  (11*12+6)=138

x+y+z= 138 inches  (Equation 1)

Clem is 15 inches shorter than Clyde so:

x+15=y         (Equation 2)

Clyde is 6 inches taller than Chloe

z=y-6        (Equation 3)

Putting z's value from equation 3 in equation 1

x+y+y-6=138

x+2y=138+6

x+2y=144    (Equation 4)

Putting Value of y from equation 1 in equation 4

x+2(x+15)=144

x+2x+30=144

3x=144-30

x=114/3

x=38

Putting x's value in equation 1 to get the value of y

38+15=y

y=53

Putting value of y in equation 3

z=53-6

z=47

Checking by putting values of x,y,z in equation 1 to see whether all heights equal 138 inches or not

38+53+47=138

138=138

3 0
4 years ago
What number should be placed in the box to help complete the division calculation? (1 point) Long division setup showing an inco
Gnoma [55]

Answer:

The answer is 299

Step-by-step explanation:

4 0
3 years ago
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