2 years ago

Simplify this (3x-5)(2x+1)

Mathematics

1 answer:

Grace [21]2 years ago

7 0

Step-by-step explanation:

(3x - 5)(2x + 1)

= 6x^2 + 3x - 10x - 5

= 6x^2 - 7x - 5

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I will give extra points please help

forsale [732]

Answer:

Step-by-step explanation:

b= 3

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3x3+4=13

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3 years ago

Write the number name for 43,080,700

Likurg_2 [28]

Forty three million, eighty thousand, seven hundred

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3 years ago

Read 2 more answers

Simplify: (-3i)(4i)(-5i)

Alecsey [184]

60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"

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3 years ago

Which steps could be part of the process in algebraically solving the system of equations, y + 5x = x2 + 10 and y = 4x – 10? Che

guapka [62]

That would be :
4x – 10 = x2 – 5x + 10 ( y = 4x - 10 is substitute for y)

PROOF: y + 5x = x² + 10
 (4x - 10) + 5x = x² + 10
4x - 10 = x² -5x + 10


0 = x2 – 9x + 20 (liked terms are grouped and simplified)

PROOF: 4x - 10 = x² -5x + 10
4x = x² -5x + 10 + 10
0 = x² -5x -4x + 20
0 = x² - 9x + 20

Solving:
x² - 9x + 20 = 0

x² - 5x - 4x + 20 = 0

(x - 5) (x - 4) = 0

⇒ x = 4 (as question says) OR x = 5

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3 years ago

Read 2 more answers

A group walked 3/8 mile in 1/5 hour. Which is the groups walking speed in miles per hour

gogolik [260]

Answer:

The groups walking speed is $1\frac{7}{8}\frac{miles}{hour}$ or $1.875\frac{miles}{hour}$