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puteri [66]
2 years ago
8

Solve the equation by completing the square (x+2)(x-3)=(x-3)

Mathematics
1 answer:
elena-14-01-66 [18.8K]2 years ago
4 0
The answer:
X1 = -1 X2 = 3
Explanation: Down the images
You might be interested in
find two numbers such that the sum of twice the first and thrice the second is 92 ,and four times the first exceeds seven times
Ilia_Sergeevich [38]

Answer:

First number = 25

Second number  = 14

Step-by-step explanation:

Let the numbers be x & y

The sum of twice the first and thrice the second is 92

2x + 3y = 92   -------------------(I)

Four times the first exceeds seven times the second by 2​

4x - 7y = 2  --------------------(II)

Multiply  equation (I) by -2 and then add the equations

(I)*-2          -4x - 6y = -184

(II)              <u> 4x - 7y = 2  </u>    { Now add, thus x will be eliminated}

                      - 13y = -182 {Divide both sides by -13}

y = -182/-13

y = 14

Plugin the value of y in equation (I)

2x + 3*14 = 92

2x + 42 = 92

       2x = 92 - 42

       2x = 50

        x  = 50/2

x = 25

First number = 25

Second number  = 14

7 0
3 years ago
The circumference of my circle is 45 inches. What is the diameter
romanna [79]

Answer:

14.32 inches to nearest thousandth.

Step-by-step explanation:

Circumference = π * d        where d = the diameter.

So 45 = π * d

d = 45 / π

=  14.32 inches

8 0
3 years ago
Read 2 more answers
Help me plssssssssssssssss I need help
RUDIKE [14]

Answer:

5

Step-by-step explanation:

the answer is 5.75, but when rounded off, it will become 5

8 0
2 years ago
Read 2 more answers
An urn contains 5 red balls and 2 green balls. Two balls are drawn one after the other. What is the probability that the second
AleksAgata [21]

Answer:

<em>The probability that the second ball is red is 71%</em>

Step-by-step explanation:

<u>Probabilities</u>

We know there are 5 red balls and 2 green balls. Let's analyze what can happen when two balls are drawn in sequence (no reposition).

The first ball can be red (R) or green (G). The probability that it's red is computed by

\displaystyle P(R)=\frac{5}{7}

The probability is's green is computed by

\displaystyle P(G)=\frac{2}{7}

If we have drawn a red ball, there are only 4 of them out of 6 in the urn, so the probability to draw a second red ball is

\displaystyle P(RR)=\frac{5}{7}\cdot \frac{4}{6}=\frac{10}{21}

If we have drawn a green ball, there are still 5 red balls out of 6 in the urn, so the probability to draw a red ball now is

\displaystyle P(GR)=\frac{2}{7}\cdot \frac{5}{6}=\frac{5}{21}

The total probability of the second ball being red is

\displaystyle P(XR)=\frac{10}{21}+\frac{5}{21}=\frac{5}{7}=0.71

The probability that the second ball is red is 71%

7 0
3 years ago
What is the answer so pwease help
bezimeni [28]
U see I would help but just because u said “pwease” I’m not :)
4 0
2 years ago
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