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3 years ago

Simplify: (4x + 3) - (5x - 1)

Mathematics

2 answers:

sergey [27]3 years ago

8 0

Answer:

= -1

Step-by-step explanation:

First remove the parentheses for the first one

= 4x + 3 - (5x - 1)

Then remove the parentheses again and change the subtraction sign to the addition sign

= 4x + 3 - 5x + 1

Then simplify

- x + 4

and simplify and you get

- 1

Hope this helped!

andreyandreev [35.5K]3 years ago

5 0

Answer:

-x + 4

Step-by-step explanation:

(4x + 3) - (5x - 1)

distribute the - into the (5x - 1)

4x + 3 - 5x + 1

combine like terms

-x + 4

Hope this Helps!!!

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2 years ago

Solve for x^2-2x+1=0

seraphim [82]

Answer:

$x=1$

Step-by-step explanation:

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We will simplify that and get:

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2 years ago

In a metal fabrication process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are n

Leto [7]

Answer:

95% Confidence interval: (14.4537 ,15.1463)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 15 feet

Sample mean, $\bar{x}$ = 14.8 feet

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, σ = 0.65 feet

Degree of freedom = n - 1 = 15

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 15 and}~\alpha_{0.05} = \pm 2.1314$

$14.8 \pm 2.1314(\dfrac{0.65}{\sqrt{16}} ) \\\\= 14.8 \pm 0.3463 = (14.4537 ,15.1463)$

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