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omeli [17]
4 years ago
12

Which ordered pair is a solution of the equation? −7x+3y=2

Mathematics
1 answer:
Xelga [282]4 years ago
6 0

Answer:it's actually C. Both (1,3) and (-2,-4)

Step-by-step explanation:

To check whether (-2,-4) is a solution of the equation let's substitute x= -2 and y= -4 into the equation:

-7x+3y=2

-7*(-2)+3*(-4)=2

14-12=2

2=2

Do the same thing with (1,3)

-7x + 3y = 2

-7 * 1 + 3 * 3 = 2

-7 + 9 = 2

2 = 2

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HELP PLZ THIS IS DUE TODAY
STatiana [176]

Answer:

A.−3x^4+2x^2−4x

B.4p^7−10p^5+2p^4

Step-by-step explanation:

A.x(−3x^3+2x−4) then simplify −3x^4+2x^2−4x

B.  -2p^3(-2p^4+5p^2-p) then simplify 4p^7−10p^5+2p^4

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3 years ago
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Scrat [10]
They are vertical angles meaning 142 is equal to 3x + 22. Put them equal to each other and solve for x.
7 0
4 years ago
In triangle XYZ right angled at Y. Find the length of the hypotenuse if the length of the other two sides is 1.6 cm and 6.3 cm.
const2013 [10]

Answer:

6.5 cm

Step-by-step explanation:

From Pythagoras theorem

C^2= a^2 + b^2

Where a, b are the sides of the triangle

C= hypotenus sides of the triangle

two sides are given as 1.6 cm and 6.3cm respectively.

C^2= 1.6^2 + 6.3^2

C^2= 2.56 + 39.69

C^2 = 42.25

C= √42.25

C=6.5 cm

Hence, the length of the hypotenuse is 6.5 cm

7 0
3 years ago
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Viefleur [7K]

Answer:

option 1 is equivalent to 3^2.3^5

4 0
3 years ago
Read 2 more answers
An urn contains 17 white balls and 18 red balls. A sample of four balls is selected at random from the urn. What is the probabil
erik [133]

Answer:

c. 0.3974

Step-by-step explanation:

Given;

number of white balls, W = 17

number of red balls, R = 18

Total number of balls, T = 35

The number of ways the event will occur is given by

= P(2 whites) and P(2 reds)

= P(2whites) x P(2 reds)

= 17C2 x 18C2

= 136 x 153

= 20,808

The total number of possible outcome

= 35C4

= 52,360

The probability = 20,808 / 52,360

                          = 0.3974

The correct option is "C"

6 0
3 years ago
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