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irakobra [83]
3 years ago
15

(2x+3)(x-7) Please help

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
6 0

Hello Brainly User,

I will walk you threw to solve this problem..

Solve  :    2x+3 = 0  

Subtract  3  from both sides of the equation :  

                     2x = -3

Divide both sides of the equation by 2:

                    x = -3/2 = -1.500

Solve  :    x-7 = 0  

Add  7  to both sides of the equation :  

                     x = 7

So x can equal 7 or -3/2

Hope i helped i was glad to help and i hope you have a great rest of your day!

-Philaeagles14

nikdorinn [45]3 years ago
5 0

Answer:

2x^2-11x-21

Step-by-step explanation:

multiply each term in the first () by each term in the second (), calculate the product, collect the like terms

i hope i help:)

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Lady_Fox [76]

Answer:

x = 6, y = 0, m = -1
y = mx + b
0 = -1(6) + b
0 = -6 + b
6 = b
y = -1x + (6)

Step-by-step explanation:

^^^
See answer, pretty simple.

4 0
2 years ago
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Find the value of n in each equation. Then name the property that is used in each step. 7 + 1.5 = n + 1.5
zalisa [80]
7 + 1.5 = n + 1.5  \text{Cancel 1.5 on both sides}

n=7 \text{Solution}
8 0
3 years ago
In a class, 60% of the students are boys and the rest are girls. If the number of boys is 30, how many students are there? ​
irga5000 [103]

50 total students

  • 20 girls

Explanation:

total students: 100%

----------------

  • 60% → 30
  • 1% → 30/60
  • 1% → 0.5
  • 100% → (0.5 * 100)
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number of girls:

  • total students - number of boys
  • 50 - 30
  • 20
5 0
2 years ago
Explain why the following quotient is incorrect: <br><img src="https://tex.z-dn.net/?f=1%2C000%20%5Cdiv%205%20%3D%202%2C000" id=
vitfil [10]

Answer:

When you divide a positive number (such as 1,000) by a number greater than 1 (such as 5), the answer must be smaller than the number you started with. The answer must be smaller than 1,000. 2,000 is greater than 1,000, so it cannot be correct. The correct quotient is 1,000/5 = 200.

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3 years ago
A portion of the Quadratic Formula proof is shown. Fill in the missing statement.
Zielflug [23.3K]

Answer:

Option A.

Step-by-step explanation:

we have

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

Simplify the right side of the equation

we know that

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

so

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

therefore

x plus b over 2 times a equals plus or minus the square root of b squared minus 4 times a times c, all over 2 times a

4 0
3 years ago
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