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3 years ago

Perform the indicated operation (-2+4i)-(3+4i)

Mathematics

2 answers:

nata0808 [166]3 years ago

7 0

I believe the answer would be -5

Vitek1552 [10]3 years ago

4 0

Whats up!

All you have to do is put it in the calculator and your answer will be:

-10-4i

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Order these numbers from least to greatest. 80 , −9.75 , −9.7 , −24825

Diano4ka-milaya [45]

Least is on top, Greatest is on bottom
-24,825
-9.75
-9.7
80

8 0

2 years ago

John has a rectangular picture which is 43 inches long and 27 inches wide. He wants to build a wooden gram for the picture but s

Dvinal [7]

Answer:

The border will be 18.6 inches wide

Step-by-step explanation:

Let the width be w

The length = 43 inches

Total wood = 800 square inches

Formula for area of rectangle = length x width

800 = 43 x w

w = 800/43

w = 18.6 inches

Therefore, the border will be 18.6 inches wide.

5 0

2 years ago

Read 2 more answers

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

2 years ago

Javed saves Rs 50 000 in a bank. The annual interest is 2.5%. How much money will Mr Javed have in the account after one year? J

goldenfox [79]

Step-by-step explanation:

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1 year ago

I need this question asap

KengaRu [80]

Answer:

ASA

Step-by-step explanation:

congruent angle, share a side, right angle

5 0

2 years ago