All categories

4 years ago

Expression of 11 - 3x - 2 +18x

Mathematics

1 answer:

grandymaker [24]4 years ago

7 0

Yea there is no expression as to answer it ?

You might be interested in

Mass error due to temperature is systematic error or random error

nika2105 [10]

Mass error is due to temperature which is a random error. I believe.

5 0

3 years ago

If i= square root of -1, what is the value of i^3

Ber [7]

Answer:

$- i$

Step-by-step explanation:

Set up equation.

$i {}^{3} = y$

${i}^{2 } \times i = y$

$- 1 \times i = y$

$- i = y$

6 0

3 years ago

The minute hand of a clock is 3 inches long. How far does the tip of the minute hand move in 40 minutes?

Mkey [24]

Answer:

4π in ≈ 12.57 in

Step-by-step explanation:

One full revolution (2π radians) is made in 60 minutes. In 40 minutes, the hand moves through an angle θ of (40/60)(2π) = 4π/3 radians. The length of the arc is ...

s = rθ = (3 in)(4π/3) = 4π in ≈ 12.57 in

6 0

3 years ago

Which of the fractions are equivalent to the fraction below?

yarga [219]

B. 2/5 is equal to 6/15

8 0

3 years ago

Molybdenum rods are produced by a production line setup. It is desirable to check whether the process is in control, i.e. equal

ikadub [295]

Answer: Test statistic = -8 and rejected region is (-∞,-1.966) and (1.966, ∞)

Step-by-step explanation:

Since we have given that

X is the length of a rod.

Sample Mean = 2 inches

Standard deviation = 0.5 inches

n = 400

Hypothesis are

$H_0:\mu=2.2\\\\H_1:\mu\neq 2.2$

Test statistics would be

$t=\dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}}\\\\t=\dfrac{2-2.2}{\dfrac{0.5}{\sqrt{400}}}\\\\t=-8$

Degrees of freedom = n-1 =400-1 =39

and $\alpha =0.05\\\\\dfrac{\alpha }{2}=\dfrac{0.05}{2}=0.025$

Using the t-distribution table, we get that critical value z = 1.966

Since the two tail test will be applied to this,

So, the acceptance region will be (-1.966, 1.966)

Hence, the rejected region will be (-∞,-1.966) and (1.966, ∞)

5 0

3 years ago