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Taya2010 [7]
3 years ago
12

Select the correct answer

Mathematics
1 answer:
Paul [167]3 years ago
4 0
The answer is 40 degrees
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3/5 (2x - 1) - 3/4 (2x + 7)
Soloha48 [4]

https://photomath.net/s/6O312e

^ that link will show you step by step and explain it, rather than writing a whole paragraph, Hope that helps:)

4 0
4 years ago
Please help!!!
baherus [9]

Answer:

\huge  \colorbox{red}{  \rm (3x - 7)(x + 1)}

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • factoring
  • PEMDAS
<h3>tips and formulas:</h3>
  • quadratic expression:ax²+bx+c

factoring quadratic:

  1. Find two numbers that multiply to give ac, and add to give b
  2. rewrite the middle with those numbers
  3. factor out common terms
  4. group
<h3>let's solve:</h3>

a is 3 and b is -7

\quad ac=3\times -7

therefore

\quad ac=-21

now we need to find two numbers that give -21

to do so we need to find the factors of 21

which are

\quad 1,3,7

likewise,

\quad -1,-3,-7

in this case we can take any two numbers from negative and positive factors that give us -21 and -4

3 and -7 are the two numbers that multiply to give -21 (3×-7=-21) and add to give -4. (3+(-7)=-4)

now let's factor:

  1. \sf rewrite \:  - 4x \: as \: 3x - 7x :  \\  \rm  {3 x}^{2} + 3x - 7x - 7
  2. \sf factor \: out \: 3x :  \\  \rm 3x(x + 1) - 7x - 7
  3. \sf factor \: out \:  - 7 :  \\  \rm 3x(x + 1) - 7(x + 1)
  4. \sf \quad group :  \\ \quad  \rm (3x - 7)(x + 1)

\text{And we are done!}

6 0
3 years ago
Read 2 more answers
What was the mean price
ahrayia [7]

Answer:

$6

Step-by-step explanation:

add all of them up and divide by the amout of numbers there

5 0
3 years ago
Given f(x)=3/4x and f(x) = 75 solve for x
mixer [17]

Answer:

x=100

Step-by-step explanation:

75=3/4x

4/3 × 75 = x

4 × 75 = 300

300/3= 100

100(3/4) = 75

x = 100

6 0
3 years ago
Find the volume of the cone. Round your answer to the nearest tenth.<br> 27 in.<br> 16 in.
Illusion [34]

it is 17371.8 I put it into a calculator and got it haha

5 0
3 years ago
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