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Alenkasestr [34]
3 years ago
6

How do I work this problem 5[8-(9x-7)]+6x=0?

Mathematics
2 answers:
enyata [817]3 years ago
4 0
5[8-(9x-7)]+6x=0
5[8-9x+7]+6x =0
40-45x+35+6x=0
75-39x=0
x = 75/39
=1.92
lys-0071 [83]3 years ago
3 0
<span>5[8-(9x-7)]+6x=0
</span><span>5[8- 9x + 7]+6x=0
40 - 45x + 35 + 6x = 0
-39x = -75
x = -75/-39
x = 1 36/39
x = 1 12/13</span>
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Zack delivers mail for the post office.everyday he walks a seven mile route.How many miles does Zack walk in one month if he wor
77julia77 [94]

If im right give me brainliest

Answer: 154

Step-by-step explanation: 22 represents days 7 represents miles he walks a day i think you to have to multiply. 22 times 7 is 154  

3 0
3 years ago
PLS HELP ASAP
timurjin [86]

The projected number of newly reported crime cases in the New York county in 2011, found using linear regression is 703 newly reported crime cases

<h3>What is a linear regression?</h3>

A linear regression models the relationship between a scalar quantity and other explanatory variables, using a linear approach.

The linear regression equation is presented as follows;

y = a + b•x

Where;

\displaystyle{ b =  \frac{ \sum (x -  \bar x) \times (y -  \bar y)}{ (x -  \bar x)^{2}  } }

\displaystyle{ a =  \frac{ \sum (y ) + b \times  \sum (x)}{ n } }

\displaystyle{   \bar x} =(0+1+2+3)/4 = 1.5

\displaystyle{   \bar y} =(994+946+928+880)/4 = 937

\displaystyle{   \sum x} =(0+1+2+3) = 6

\displaystyle{   \sum y} =(994+946+928+880) = 3748

n = 4

Using the statistics function of a graphing calculator, under Scatter plot, plot type, we have;

y = 991 - 36•x

Which gives;

b = -36

a = 991

From the given parameters, we have;

<em>x </em>= The number of years since 2003

y = The number of newly reported crime cases

Required;

The number of projected new cases in 2011

Solution;

In 2011, <em>x </em>= 2011 - 2003 = 8

Which gives;

y = 991 - 36×8 = 703

The number of newly reported crime cases in 2011 is 703

Learn more about linear regression equation here:

brainly.com/question/19712770

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6 0
2 years ago
What is the solution of 7k + 2 = 4k – 10?
Leona [35]

Answer:

k = ( - 4 )

Step-by-step explanation:

7k + 2 = 4k - 10

( arrange all like terms together like variable aside and constant aside here )

7k - 4k = -10 - 2

3k = (-12)

k = ( -4 )

5 0
3 years ago
If g(x) = ax2 + 3x – 5, what does a need to be so that...
Arisa [49]

Answer:

Step-by-step explanation:

g(x)=ax²+3x-5

then g(-1)=-15

therefore g(-1) ⇒ a(-1)²+3(-1)-5=-15

a-3-5=-15

a-8=-15

a=-15+8

a=-7

for g(-1)=-15

then g(x)= -7x²+3x-5

5 0
3 years ago
How to write the following in exponential form. 100 x 10
Masteriza [31]
10 * 100 = 1000 so... 10^3 would equal 1000 too

8 0
4 years ago
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