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3 years ago

Solve the value of Z 8 = 16

Mathematics

1 answer:

dezoksy [38]3 years ago

4 0

Answer:

Z=2

Step-by-step explanation:

Z8=16

Z=16/8

Z=2

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(3.8 x 10 ^ -6) x (2.37 x 10 ^ -3)<br><br> Enter the answer in science notification

Black_prince [1.1K]

Multiply the coefficients and the powers of 10 with each other:

$(3.8 \times 10^{-6}) \times (2.37 \times 10^{-3}) = (3.8\times2.37) \times (10^{-6} \times10^{-3})$

The numeric part simply yields

$3.8\times2.37 = 9.006$

As for the powers of 10, you have to add the exponents, using the rule

$a^b \times a^c = a^{b+c}$

So, we have

$10^{-6} \times10^{-3} = 10^{-6-3} = 10^{-9}$

So, the final answer is

$9.006\times 10^{-9}$

7 0

3 years ago

25 points

elixir [45]

C. 4x + y = 21

4(3) + 9 = 21
12 + 9 = 21
21 = 21

8 0

3 years ago

Read 2 more answers

Can someone help me with these 2 problems plz

Taya2010 [7]

For the first one I believe that the numbers are both odd and I am not sure about the second one sorry

4 0

3 years ago

Read 2 more answers

if a sample size 40 is drawn from the population that has mean 276 and a variance of 81, what is the probability that the mean o

lapo4ka [179]

Answer:

The probability is 0.017429

Step-by-step explanation:

We start by calculating the z-score

Mathematically;

z-score = (x-mean)/SD/√n

In this case;

x = 273

mean = 276

SD = √(variance) = √81 = 9

n = 40

Substituting these values into the z-score formula, we have that;

z = (273-276)/9/√40

z = -2.11

So we proceed to get the probability

the probability in this case is;

P( z < -2.11)

We can use the normal distribution table for this

Our answer will be

P( z < -2.11) = 0.017429

4 0

3 years ago

In the xy- plane, the graph of the equation y + 3x + 5 is a line that intersects the y-axis at (0,b) what is the value of b?

maxonik [38]

Answer:

$b=5$

Step-by-step explanation:

The given equation is:

$y=3x+5$

To find the point where this line intersect the y-axis, we put x=0 into the given equation.

When x=0, we have $y=3(0)+5$ .

This implies that; y=5.

The y-intercept is (0,5).

Comparing (0,5) to (0,b), we can conclude that; b=5

8 0

3 years ago