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3 years ago

Which expression is equal to (3x – 4)(2x – 5)?

Mathematics

2 answers:

Vikki [24]3 years ago

6 0

Answer:

6x^2-23x+20

Step-by-step explanation:

i think the expanded form of that equation is equal to it.

(3x-4)(2x-5)

3x(2x-5)-4(2x-5)

6x^2-15x-8x+20

6x^2-23x+20

I hope this helps and sorry if it's wrong

fiasKO [112]3 years ago

3 0

6x^2-23x+20 sorry if it’s wrong I’m not sure

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Ratling [72]

Answer:

Step-by-step explanation:

3 0

3 years ago

ANSWER THIS QUESTION ASAP

Taya2010 [7]

$- \frac{4}{25}$

8 0

3 years ago

Round your percent to two decimal places as needed

Mrrafil [7]

Step-by-step explanation:

The ratio is 459/484.

The percent is:

459/484 × 100%

= 94.83%

The percent left is:

100% − 94.83%

= 5.17%

3 0

3 years ago

Is this equation an identity? (2x+1)^2-(x+1)^2=3(x+1)^2-1

sergey [27]

Answer:

See below, please

Step-by-step explanation:

Left side

${(2x + 1)}^{2} - {(x + 1)}^{2}$

$= (4 {x}^{2} + 4x + 1) - ( {x}^{2} + 2x + 1)$

$= (4 {x}^{2} - {x}^{2} ) + (4x - 2x) + (1 -1 )$

$= 3 {x}^{2} + 2x$

Right side

$3 \times {(x + 1)}^{2} - 1$

$= 3 \times ( {x}^{2} + 2x + 1) - 1$

$= 3 {x}^{2} + 6x + 3 - 1$

$= 3 {x}^{2} + 6x + 2$

After compared with both sides, we can make a conclusion that

This equation isn't an identity.

6 0

2 years ago

A fast car travels 420 miles in a period of 210 minutes. What is the adverage rate of change of distance of the car in miles per

nikitadnepr [17]

If you would like to know the average rate in miles per hour, you can calculate this using the following steps:

420 miles ... 210 minutes
x miles = ? ... 1 hour = 60 minutes

420 * 60 = 210 * x
x = 420 * 60 / 210
x = 120 miles

The correct result would be 120 miles per hour.

7 0

3 years ago