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3 years ago

How many solutions does 5x + 4y=6 have

Mathematics

1 answer:

jekas [21]3 years ago

8 0

Answer:

Error....

At least 2 equation needed for the solution of two variables

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A bag contains 31 red blocks, 47 green blocks, 23 yellow blocks, and 24 purple blocks. You pick one block from the bag at ran

svp [43]

Answer:

0.07072

Step-by-step explanation:

Red Blocks= 31

Green Blocks= 47

Yellow blocks = 23

Purple blocks= 24

Total= 31+47+23+24= 125

P(Yellow) = 23/125

P(Purple)=24/125

NOTE: AND (X), OR (+)

P(yellow yellow or purple purple)

= P(Y and Y) + P(P and P)

=(23/125 X 23/125) + (24/125 X 24/125)

=529/15625 + 576/15625

=1105/15625

=221/3125

=0.07072

Therefore:

Probability of Picking Yellow Yellow or Purple Purple is 0.07072.

4 0

3 years ago

Nonamiya [84]

The only point outside of the line is (2, 0)

In order to find if a point is outside, inside or on the line, you simply have to put the number into the equation. If the result is both sides are equal, then it is on the line. If the left side is bigger than the right side, then it is outside of the line. If the right side is bigger than the left, then it is inside of the line. So lets plug in and see where (2, 0) falls.

(x - 2)^2 + (y + 3)^2 = 4

(2 - 2)^2 + (0 + 3)^2 = 4

0^2 + 3^2 = 4

0 + 9 = 4

9 = 4

Since the left side is bigger than the right, we know it is outside of the line.

3 0

4 years ago

Differential Equations

SashulF [63]

Answer:

$b=\pm2\sqrt{2}$

Step-by-step explanation:

For the spring mass system

my"+by'+ky=0

The system is said to be critically damped if $b^2-4mk=0$

Here b is coefficient of friction

m is the mass of system

And k is spring constant

We have given m = 2 kg , k =1

So $b^2-4\times 2\times 1=0$

$b^2=8$

$b=\pm2\sqrt{2}$

So the coefficient of friction is $\pm2\sqrt{2}$

7 0

3 years ago

Please answer and no links please and thank you.

sweet [91]

Answer:

286 mm²

Step-by-step explanation:

A trapezium is given with ,

Parallel sides = 24mm , 28 mm
Height = 11mm .

The area is given by :-

$:\implies$ Area = 1/2 ( b₁ + b ₂) × h

$:\implies$ Area = 1/2 ( 24 + 28)×11 mm²

$:\implies$ Area = 1/2 × 52× 11mm²

$:\implies$ Area = 286 mm²

<h3>Hence the area of the trapezium is 286 mm².</h3>

8 0

3 years ago

There are 10 red and 20 yellow balls. Drawing 3 balls without replacement, what is the chance the first is red and the next two

Xelga [282]

10 + 20 = 30 total balls.

Picking red = 10/30 = 1/3

After picking one ball there are 29 balls left.

Picking a yellow next is 20/29

Then there are 28 balls left and 19 yellow left, so picking another yellow would be 19/28

The probability of picking red first then two yellow = 1/3 x 20/29 x 19/28 = 95/609

6 0

3 years ago