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SSSSS [86.1K]
3 years ago
7

X + 4y = 16 -X + 3y = -2 ​

Mathematics
1 answer:
jeyben [28]3 years ago
7 0

Answer:

(8, 2 )

Step-by-step explanation:

Given the 2 equations

x + 4y = 16 → (1)

- x + 3y = - 2 → (2)

Adding the 2 equations term by term will eliminate the x- term

0 + 7y = 14

7y = 14 ( divide both sides by 7 )

y = 2

Substitute y = 2 into either of the 2 equations and solve for x

Substituting into (1)

x + 4(2) = 16

x + 8 = 16 ( subtract 8 from both sides )

x = 8

solution is (8, 2 )

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9:45 on Tuesday Questions
Sergio039 [100]

Answer:

  • 95°
  • 85°

Step-by-step explanation:

<u>Given angles are consecutive interior angles which sum up to 180°</u>

  • 9x + 14 + 8x + 13 = 180
  • 17x = 180 - 27
  • 17x = 153
  • x = 153/17
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<u>Angles</u>

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8 0
3 years ago
8x{[(7+4)x2] - [(11-7)x4]}
Anni [7]
PEMDAS
P - Parentheses (or other grouping symbols)
E - Exponents 
M - Multiplication
D - Division
A - Addition
S - Subtraction

8x[(7+4)x^2] - [(11-7)x^4]\\  \\ 8x[(11)x^2] - [(4)x^4] \\  \\ 8x[11x^2] - [4x^4] \\  \\ 88x^3 - 4x^4 \\  \\ -4x^4+88x^3

If you then want to go on to factor it, your answer would be -4x^3(x-22)
8 0
4 years ago
Read 2 more answers
How did you determine the number of cups needed to make a stack 50 cm in height?
Katena32 [7]

Answer:

the number of cups is kept within other  till the cups reach reach 50cm

x=number of cups

y= height of the cups when placed on each other

so the equation would be  ; x + y=50

Step-by-step explanation:

mark brainliest

6 0
3 years ago
Which pair of angles are alternate exterior angles of parallel lines v and w?
vampirchik [111]

Answer:

a and d

Step-by-step explanation:

v and w are parallel lines

R is the transversal

Alternate exterior means on the opposite sides of the transversal and outside of the parallel linea

a and d are alternate exterior angles

8 0
2 years ago
A billboard is 6 meters long . One centimeter is approximately 0 .39 inch . About how long is the billboard in inches? Round to
Semenov [28]

Answer: 234 inches

Step-by-step explanation:

The billboard is 6 meters long and we are given the conversion factor for centimeters to inches.

To convert the length to inches therefore, convert the length from meters to centimeters first:

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6 meters would therefore be:

= 6 * 100

= 600 cm

1 cm = 0.39 inches so 600 cm is:

= 600 * 0.39

= 234 inches

8 0
3 years ago
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