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CaHeK987 [17]
3 years ago
7

If 5(3x-7)=20, then what is 6x-8 ?

Mathematics
1 answer:
Colt1911 [192]3 years ago
3 0
First solve for x in the first equation. So you'll have to substitute,
5(3x-7)=20
15x-35=20
Then add 35 to both sides.
15x=55
Divide 55 by 15.
So x = 3.66...
Then plug in 3.7 for x in 6x-8
6(3.7)-8
Its approximately 14.2
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Rewrite this standard form quadratic equation into vertex form by completing the square. Upload your work here to show your thin
Alex787 [66]

Solution :

Given the equation :

$y = x^2 - 6x+3 $

$y=1(x^2 - 6x +n)+3$

$n = \left(\frac{b}{2}\right)^2$

$n = \left(\frac{6}{2}\right)^2$

n = 9

$y=1(x^2 - 6x +9-9)+3$

$y=1(x^2 - 6x +9)-9+3$

$y=1(x-3)^2- 6$

Therefore the vertex form of $y = x^2 - 6x+3 $  is  $y=1(x-3)^2- 6$.

3 0
3 years ago
Solve for the missing angles and side lengths A= 20 degrees, b=4 a = 4.5 Find the measure of C
Reil [10]

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Its 142

Step-by-step explanation:

Theres a website called triangle calculator and you put in three things wether its SSA or ASA or whatever and it gives you all the measurements. Good luck on your quizzes and tests :)

6 0
3 years ago
Geometry. Very basic.
AveGali [126]

Answer:

A)10.25 cm ; B)5 square cm  

Step-by-step explanation:

A)

Formula:

p=(a+b+c)         [p= perimeter ;  a,b , and c are the side lengths.]

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B)

Formula:

A = 1/2 . b .h    [A=area ; b= base ; h= height]

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Step-by-step explanation:

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The recycling and reuse industry employs approximately 1,025,000 more workers than the waste management industry. Together they
NARA [144]

Answer:

Step-by-step explanation:

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Number of workers employed by The recycling and reuse industry = the number of workers employed by the waste management industry + 1,025,000

Let y = the number of workers employed by the waste management industry. Therefore

x = y + 1,025,000 - - - - - - 1

Since total = 1,275,000

x + y = 1,275,000 - - - - - - -2

Substituting equation 1 into equation 2, it becomes

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The recycling and reuse industry employs 1150000 workers

The waste management industry employs 125000 workers

7 0
3 years ago
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