Which of the following is unbalanced?A.
2Fe + 3Cl2 → 2FeCl3

B.
2Na + 2H2O → 2NaOH + H2

C.
SnO2 + H2 → Sn + 2 H2O

D.
N2O5 + H2O → HNO3

Answers

Answer 1

Answer:

Answer:

A. 2Fe + 3CI2 - 2FeCI3 ........

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How many rational numbers are there between - 5 and - 4?
Is 11.34 greater or less than 11.340
Which is true about the polynomial –8m3 + 11m?It is a trinomial with a degree of 3. It is a trinomial with a degree of 3. It is a trinomial with a degree of 2. It is a trinomial with a degree of 2. It is a binomial with a degree of 3. It is a binomial with a degree of 3. It is a binomial with a degree of 2.
A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval between times of maximum brightness is 4.2 days. The average brightness of this star is 3.0 and its brightness changes by ±0.25. In view of these data, the brightness of the star at time t, where t is measured in days, has been modeled by the function B(t) = 3.0 + 0.25 sin 2πt 4.2 . (a) Find the rate of change of the brightness after t days. dB dt =

Help please I don’t get this

Answers

Answer: 62.5 (assuming it flies straight up, because we don't know the speed of the bird going straight, left, right, or back.)

Step-by-step explanation:

They want to know how far the bird flies in a minute. What you do is you use the char to help you figure it out, by dividing the first row both by 2, so it would give the answer under the altitude column.

Create an equation to solve for x then solve for x.

Answers

Answer:

Step-by-step explanation:

In parallelogram adjacent angles are supplementary

∠U +∠V = 180

9x + 15 + 6x + 15 = 180

Combine like terms

9x + 6x + 15 + 15 = 180

15x + 30 = 180

Subtract 30 from both sides

15x = 180 - 30

15x = 150

Divide both sides by 15

x = 150/15

x = 10

∠U = 9x + 15

= 9*10 + 15

= 90 + 15

∠U = 105

∠V = 6x + 15

= 6*10 + 15

= 60 + 15

∠V = 75

Answer:

Equation: $2(9x + 15 + 6x + 15) = 360$

x = 10°

∠U = 105°

∠V = 75°

Step-by-step explanation:

Hello!

The sum of angles in a parallelogram is 360°. The oppositeangles of a parallelogram are congruent.

Part A

Equation: $2(9x + 15 + 6x + 15) = 360$

Solve

$2(9x + 15 + 6x + 15) = 360$
$9x + 15 + 6x + 15 = 180$
$15x + 30 = 180$
$15x = 150$
$x = 10$

The value of x is 10°.

Part B

To find the measures of each angle, simply plug in 10° for x in each equation.

∠U

$9x + 15$
$9(10) + 15$
$90 + 15$
$105$

Angle U is 105°.

∠V

$6x + 15$
$6(10) + 15$
$60+15$
$75$

Angle V is 75°.

PLEASE HELP ASAP
Add the complex numbers: (4 + 8i) + (–2 – i)

Answers

Answer:

2 + 7i

Step-by-step explanation:

(4 + 8i) + (-2 - i)

open the brackets

4 + 8i - 2 - i

add or subtract like terms

2 + 7i

Answer:

2+7i

Step-by-step explanation:

Open the brackets.

4+8i-2-i

You will get…

2+7i

The skip interval in systematic random sampling is computed by dividing the number of potential sampling units on the list by the desired sample size .O True
O False

Answers

Answer:

True

Step-by-step explanation:

The skip interval in systematic random sampling is computed by dividing the number of potential sampling units on the list by the desired sample size .

Systematic sampling is a type of probability sampling method in which sample members from a larger population are selected according to a random starting point but with a fixed, periodic interval (the sampling interval).

Sampling interval is calculated by dividing the population size by the desired sample size

Find the distance between (-8, -2)
and 6, -1)

Answers

The distance between the given coordinate points is $√(197)$ units.

The given coordinate points are (-8, -2) and (6, -1).

The distance formula which is used to find the distance between two points in a two-dimensional plane is also known as the Euclidean distance formula. On $2D$ plane the distance between two points $(x_1, y_1)$ and $(x_2, y_2)$ is Distance $= √((x_2-x_1)^2+(y_2-y_1)^2)$ .

Substitute $(x_1, y_1)=(-8, -2)$ and $(x_2, y_2)=(6, -1)$ in distance formula, we get

Distance $= √((6+8)^2+(-1+2)^2)$

Distance $= √((14)^2+(1)^2)$

Distance $= √(196+1)$

Distance $= √(197)$ units

Therefore, the distance between the given coordinate points is $√(197)$ units.

To learn more about the distance formula visit:

brainly.com/question/27262878.

#SPJ3

Answer:

-8,-2= 6

6,-1=7

Step-by-step explanation:

get a number line and use that to it and look up how to use a number line with negative numbers it’s not hard once you see how it’s done

Tierra's THR zone is 135-185 bpm (beats per minute). What might Tierra's heart rate be toindicate that she was working too hard?
A. 145 bpm
B. 195 bpm
C. 175 bpm
D. 130 bpm

Answers

The correct answer is B. 195 bpm

Explanation:

In health and related areas, THR or Target Heart Rate zone refers to the range of heart rate an individual should have including the maximum heart rate. In the case of Tierra, her THR zone indicates her maximum heart rate should be 185 beats per minute.

In this context, a heart rate above this number shows Tierra is working too hard or that his heart is doing too much effort, which is dangerous for her health. Thus, the heart rate that shows she is doing too hard is 195 bmp as this is the only one that is above the ideal rate.

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Change 11/5 from an improper fraction to a mixed number

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The function f is defined by the following rule. f(x) = 5x+1 Complete the function table.

Which is the correct?