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krek1111 [17]
3 years ago
11

HURRY PLZ WILL GIVE BRAINLIEST AND 50 POINTS What is the value of x in the equation 4 5+ਬ-* 2 - (4-5 - 7​

Mathematics
1 answer:
Inessa05 [86]3 years ago
3 0

Answer:

6 I think

Step-by-step explanation:

7 + 5(x - 3) = 22

7 + 5x - 15 = 22

7 + 5x = 37

5x = 30

x = 6

{ 6 }

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We know that college GPA is positively correlated with salary after college. If we use knowledge of a student's GPA to predict h
anygoal [31]

Answer:

Step-by-step explanation:

Given that college GPA is positively correlated with salary after college

This means there is a positive linear relationship between GPA and salary after college.

Or we can write one as dependent and another as independent.

Since in the given question Salary is to be found out for given GPA we can make GPA as independent variable and Salary after college dependent variable

We will find a linear relationship as

Salary = slope * GPA + intercept

So

If we use knowledge of a student's GPA to predict his or her salary, the criterion variable is __GPA_____ and the predictor variable is __Salary after college._____.

7 0
3 years ago
\sum_{n=1}^{\infty } ((-1^n)/n)x^n<br><br> Find the interval of convergence.
Lorico [155]

Answer:

(-1,1).

Step-by-step explanation:

We need to calculate \lim_{n \to \infty}\frac{| a_{n+1}|}{| a_{n}|} = \frac{1}{R} where R is the radius of convergence.

\lim_{n \to \infty}\frac{\frac{|(-1)^{n+1}|}{|n+1|}}{\frac{|(-1)^{n}|}{|n|}}

\lim_{n \to \infty}\frac{\frac{1}{|n+1|}}{\frac{1}{|n|}}

\lim_{n \to \infty}\frac{|n|}{|n+1|}

Applying LHopital rule we obtaing that the limit is 1. So 1=\frac{1}{R} then R = 1.

As the serie is the form (x+0)^{n} we center the interval in 0. So the interval is (0-1,0+1) = (-1,1). We don't include the extrem values -1 and 1 because in those values the serie diverges.

4 0
3 years ago
Josephine solved a quadratic equation. Her work is shown below.
mariarad [96]

Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49  means : (x + 7)² = 7²

(x + 7)² - 7²=0   use identity : a²-b² = (a-b)(a+b)

a=x+7  and b= 7

(x+7-7)(x+7+7) = 0

x(x+14)=0

x=0 or x+14=0

so : x=0 or x= -14

7 0
4 years ago
Bananas cost $0.86 per pound.
romanna [79]

she divide as she went along to buy them

5 0
4 years ago
Read 2 more answers
Ethan buys a new phone. It cost 75$. He will pay for this on his 1st bill.
kirill115 [55]

Answer:250

Step-by-step explanation: Subtract 90 from 75 which is 15 then divide 15 by .06 which is 250

6 0
4 years ago
Read 2 more answers
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