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3 years ago

Solve for x (please show work if possible)

Mathematics

1 answer:

mariarad [96]3 years ago

5 0

X = 5

Solving steps:

1. 2x - 45 = - 35

2. 2x = - 35 + 45

3. 2x = 10

4. x = 5

Hope that helps

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Suppose you draw a single sample of size 64 from a large population and measure its sample proportion. What is the margin of err

MissTica

Answer:

(b) 6.25%

Step-by-step explanation:

Margin of error is the chances of percentage deviation that may differ from original population data. The margin of error for 95% confidence interval can be 6.25%. To find this we divide population standard deviation with square root of sample size. The margin of error is the estimate of the deviation from actual and real value of population.

3 0

3 years ago

(2x-7)-(4x^2+6x-3)+(x^2+4)

masha68 [24]

Answer:

$-3x^2-4x$

Step-by-step explanation:

Simplify:

$\left(2x-7\right)-\left(4x^2+6x-3\right)+\left(x^2+4\right)$

$=2x-7-\left(4x^2+6x-3\right)+x^2+4$

Group same factor:

$=-\left(4x^2+6x-3\right)+x^2+2x-7+4$

Add :

$=-\left(4x^2+6x-3\right)+x^2+2x-3$

Apply the distributive law: -(a+b) = -a - b

$-\left(4x^2+6x-3\right)=-4x^2-6x+3$

$=-4x^2-6x+3+x^2+2x-3$

Group same factor:

$=-4x^2+x^2-6x+2x+3-3$

Subtract:

$=-4x^2+x^2-6x+2x$

Add:

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

Group same factor:

$=-3x^2-4x$

Hence answer = $-3x^2-4x$

~lenvy~

8 0

2 years ago

Please as soon as possible

olchik [2.2K]

Answer:

8/-7

Step-by-step explanation:

using the equation: y₂-y₁/x₂-x₁

10-2/0-7 = 8/-7

3 0

3 years ago

What is the slope of the line that passes through the points (-7, -7) and (-7, 1) ?

ICE Princess25 [194]

Answer:

undefined

Step-by-step explanation:

(-7, -7) and (-7, 1)

To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(1 - (-7)) / (-7 - (-7))

Simplify the parentheses.

= (1 + 7) / (-7 + 7)

Simplify the fraction.

8/0

= undefined

Our line is a vertical line, which has an undefined slope.

Hope this helps!

6 0

3 years ago

What is the inverse of the function fx) x +3?

xz_007 [3.2K]

My answer -
f(x)=x^3+2 To find the inverse function f(x)^-1 , we will assume" y=x^3+2 y-2= x^3 ==> x= (y-2)^1/3 ==> f(x)-1= (x-2)^1/3
P.S

Happy to help you have an AWESOME!!!!! day

6 0

3 years ago