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4 years ago

Is the point 5,2 a solution of the equation y=2x+15

Mathematics

2 answers:

DENIUS [597]4 years ago

8 0

Answer:

No.

Step-by-step explanation:

To find out if a point is a solution, substitute "x" and "y" values from the point into the equation. Check if the equation is still balanced.

Point are written (x, y). So in (5,2), x = 5 and y = 2.

y = 2x + 15 Substitute for x and y

2 = 2(5) + 15 Simplify by multiplying

2 = 10 + 15 Simplify by adding

2 = 25

This is false. The equation is not balanced.

LS ≠ RS Left side is not equal to right side.

Therefore (5,2) is not a solution on y=2x+15.

shepuryov [24]4 years ago

6 0

Answer:

No, it is not.

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A die is rolled twice. What is the probability of getting either a multiple of 2 on the first roll or a total of 8 for both roll

Nuetrik [128]

Answer:

Step-by-step explanation:

let A=favorable outcomes for getting multiple of 2

they are 21,22,23,24,25,26,

41,42,43,44,45,46,

61,62,63,64,65,66

P(A)=18/36

let B=total of 8

favorable outcomes are 26,35,44,53,62

P(B)=5/36

P(A∩B)=3/36

P(A OR B)=P(A∪B)=P(A)+P(B)-P(A∩B)=18/36+5/36-3/36=20/36=5/9

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3 years ago

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zheka24 [161]

Answer:

Step-by-step explanation:

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3 years ago

What is 8.05 × 10-5 in standard notation? 0.0000805 0.00000805 805,000 8,050,000

Tanya [424]

Answer:

0.0000805

Step-by-step explanation:

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3 years ago

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3 years ago

The midpoint of AB is M(-6, -6). If the coordinates of A are (-4-8), what are

icang [17]

Answer:

<em>The coordinates of B are (-8,-4)</em>

Step-by-step explanation:

<u>Midpoint of a segment</u>

Given points A(xa,ya) and B(xb,yb), the coordinates of the midpoint M can be found knowing that:

$\overline{AM}=\overline{MB}$

Applying that relation in both axes separately, we can write:

$x_A-x_M=x_M-x_B$

$y_A-y_M=y_M-y_B$

Knowing the coordinates of the midpoint and A, we can find the coordinates of the other extreme B solving both equations for the required variable:

$x_B=2x_M-x_A$

$y_B=2y_M-y_A$

Plugging in the known values:

$x_B=2(-6)-(-4)=-12+4=-8$

$y_B=2(-6)-(-8)=-12+8=-4$

The coordinates of B are (-8,-4)

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3 years ago