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Andrew [12]
3 years ago
7

Solve 2x²-3x-7=0 using completing the square method​

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
8 0

Answer:

Use the formula ( b 2 ) 2 in order to create a new term.

Solve for x by using this term to complete the square.

Exact Form: x = ± √ 65 4 + 3 4

Decimal Form: x = 2.76556443 … , − 1.26556443 …

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Which shows the most reasonable way to estimate 3 4/7 (-2 1/12) using compatible fractions
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Answer:

B). 3 1/2(-2) = -7

Step-by-step explanation:

Let's evaluate the expression so as to be able to get the right estimate.

3 4/7 (-2 1/12)

=3 4/7 (-25/12)

= 25/7 * -25/12

= 25/7 * -25/12

= -625/84

= -7 37/84

Approximately it's equal to ,-7

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3 years ago
Ricardo throws a stone off a bridge into a river below how many seconds after being thrown will the stone reach its maximum heig
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Answer:

0

Step-by-step explanation:

the highest the stone will ever be is in your hand after you throw it the rock will automatically start falling more and more down towards the river which is below you.

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The heights of women in the united states are normally distributed with a mean of 64 inches and a standard deviation of 2.75 inc
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According to the normal distribution curve:

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And that value is 95% of the whole data



7 0
3 years ago
Estimate each percent. <br> 26% of 125
kari74 [83]
26\% \ of \ 125= \frac{26}{100}*125= \\\\= \frac{26}{4}*5= \\\\ =\frac{13}{2}*5= \\\\ =\boxed{\frac{65}{2}\to32.5}
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Given point B is located at
ELEN [110]

Answer: \Large\boxed{Point~B'~=~(-4,~-2)}

Step-by-step explanation:

<u>Given information</u>

Point B = (-2, -4)

Reflection line: y = x

<u>Concept:</u>

When reflecting over the line y = x, the position of y and x in the original coordinate switches places.

This is because it is " y = x ", assuming that they could interchange

<u>Find the coordinate of Point B'</u>

Original (x, y) = (-2, -4)

Point B' = (x', y') = (y, x) = \Large\boxed{(-4,~-2)}

<em>Please refer to the attachment below for a graphical understanding</em>

Hope this helps!! :)

Please let me know if you have any questions

4 0
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