3 years ago

Is (2,3) a solution of the system

Mathematics

1 answer:

seropon [69]3 years ago

3 0

Answer:

Yes

Step-by-step explanation:

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Jennifer has 21 pencils she gives 21 pencils to her teacher write an equation that represents this situation

Galina-37 [17]

Answer + step-by-step explanation:

21 - 21 = 0

Jennifer has 0 pencils left.

5 0

3 years ago

Read 2 more answers

PLEASE OMG PLEASE

irinina [24]

Its the first one, which is AB=BC

5 0

3 years ago

a 285-inch pipe is cut into two pieces. One piece is five times the length of the other. Find the length of the shorter piece.

Katyanochek1 [597]

Answer:

37.5

Step-by-step explanation:

Let the length of the shorter piece be x and the longer piece be 5x.

Short piece + Long piece = 285 inches

x + 5x = 225

6x = 225

x = 225 ÷ 6

x = 37.5

6 0

3 years ago

Use the quadratic formula to solve for x.

ryzh [129]

Answer:

The answer is

$x = \frac{ - 9 - \sqrt{41} }{10} \: \: \: , \: \: \: \: \: \frac{ - 9 + \sqrt{41} }{10} \\$

Step-by-step explanation:

5x² + 9x + 2 = 0

Using the quadratic formula that's

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a} \\$

From the question

a = 5 , b = 9 , c = 2

We have

$x = \frac{ - 9 \pm \sqrt{ {9}^{2} - 4(5)(2) } }{2(5)} \\ = \frac{ - 9 \pm \sqrt{81 -40 } }{10} \\ = \frac{ - 9 \pm \sqrt{41} }{10} \: \: \: \: \: \: \: \: \: \:$

We have the final answer as

$x = \frac{ - 9 - \sqrt{41} }{10} \: \: \: , \: \: \: \: \: \frac{ - 9 + \sqrt{41} }{10} \\$

Hope this helps you

8 0

3 years ago

3x - 2 2x + 1 д B c If x = 5, then the length of BC is

masha68 [24]

So BC is 2x+1 and they are telling you that if your x is 5 then what is BC
So you have to plug in the 5 into your equation
2(5)+1
10+1
11
So BC is 11

4 0

3 years ago