PLEASE HELP ME

Jamie used a microscope to measure the diameter of a hair. She found that the diameter of the hair was 0.000072 meter. How is this number written in scientific notation?
A. 7.2 × 10−6
B. 7.2 × 105
C. 7.2 × 10−5
D. 7.2 × 106

Answer:

they are already paralell

Step-by-step explanation:

ok

Based on the information given, we know that the two triangles have two pairs of congruent angles. This is sufficient to prove that the two triangles are congruent using the AAS (Angle-Angle-Side) postulate. Therefore, the method I would use to prove the two triangles congruent is **AAS**.

\(\huge\pink{Answer}\)

Let's start by calling the two numbers we are looking for x and y.

The sum of x and y is 30. In other words, x plus y equals 30 and can be written as equation A:

x + y = 30

The difference between x and y is 20. In other words, x minus y equals 20 and can be written as equation B:

x - y = 20

Now solve equation B for x to get the revised equation B:

x - y = 20

x = 20 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 30

20 + y + y = 30

20 + 2y = 30

2y = 10

y = 5

Now we know y is 5. Which means that we can substitute y for 5 in equation A and solve for x:

x + y = 30

x + 5 = 30

X = 25

Summary: The sum of two numbers is 30 and their difference is 20. What are the two numbers? Answer: 25 and 5 as proven here:

Sum: 25 + 5 = 30

Difference: 25 - 5 = 20

Answer:

P = -10

5p - 8(p + 1) > 16

5(-10) - 8(-10 + 1) > 16

-50 - 8(-9) > 16

-50 + 72 > 16

22 > 16

Answer:

7/20

Explanation:

The given data is presented in the table below:

The probability of selecting a lower division student, given the student is a female:

The answer is 7/20.

Answer:

y = 18

Step-by-step explanation:

We can notice that this is a quadrilateral with two pairs of equal sides, with that we will see that:

m∠D = 98°

In the image we can see a quadrilateral ABCD, on that image we can see that:

AB = CD

AD = BC

You can notice that because of the "arrows" on the sides.

From that, we can conclude that the measures of the angles meet the conditions:

m∠A = m∠C

m∠D = m∠B

On the image we also can see that:

m∠B = 98°

And the measure of angle B is equal to the measure of angle D, then we can conclude that the measure of angle D is also 98°, so:

m∠D = 98°

Learn more about quadrilaterals by reading:

https://brainly.com/question/23935806

#SPJ1

A digit to make the number divisible by 3 is by adding the digit 2 to the number 1234.

To make the number 1234 divisible by 3, we can find the sum of its digits and determine if it is divisible by 3. If the sum of the digits is divisible by 3, then the original number is also divisible by 3.

Let's calculate the sum of the digits in 1234:

1 + 2 + 3 + 4 = 10

The sum of the digits is 10. Since 10 is not divisible by 3, we need to add or subtract a digit to make the sum divisible by 3.

To find the digit we need to add or subtract, we can use the fact that the difference between the original sum and the next multiple of 3 is the required digit.

The next multiple of 3 greater than 10 is 12 (12 - 10 = 2). Therefore, we need to add 2 to the number 1234 to make it divisible by 3.

1234 + 2 = 1236

we obtain the number 1236, which is divisible by 3.

For more such questions on divisible

https://brainly.com/question/29373718

#SPJ8

Answer:

y = 4x - 11

Step-by-step explanation:

The general equation of the slope-intercept form of a line is given by:

y = mx + b, where

We can find b, the y-intercept of the line, by plugging in 4 for m and (3, 1) for (x, y) in the slope-intercept form:

1 = 4(3) + b

1 = 12 + b

-11 = b

Thus, the y-intercept is -11.

Thus, the equation of the line with a slope of 4 passing through the point (3, 1) in slope-intercept form is y = 4x - 11

The answer is:

Work/explanation:

First, we will write the equation in point slope:

\(\sf{y-y_1=m(x-x_1)}\)

where m = slope;

(x₁,y₁) is a point on the line.

Plug in the data:

\(\sf{y-1=4(x-3)}\)

Simplify

\(\sf{y-1=4x-12}\)

Add 1 on each side

\(\sf{y=4x-12+1}\)

\(\sf{y=4x-11}\)

Answer: is 28080

Step-by-step explanation:

Answer:

1.4

Step-by-step explanation:

First ignore the Fahrenheit symbol it makes everything more confusing.

Just do regular math, -1.7 + 3.1 = 1.4!

You were very close, this stuff can be confusing (I got confused at first too)

I hope this helps you out!

Answer:

1. D

2. Is A $0.87 for each song

Step-by-step explanation:

12 x $0.87 = $10.44

$10.44 + $5.04 = $15.48

I hope this helped you

Queremos derivar la expresión dada, obtendremos el resultado:

\(y' = \frac{3x^2 - 2}{(3x^3 - 2x + 5)^{2/3}}\)

Asumo que la expresión dada es:

\(y = \sqrt[3]{3x^3 - 2x + 5} = (3x^3 - 2x + 5)^{1/3}\)

Para derivar esto primero usamos la regla de la composición, si:

f(x) = g(h(x))

entonces la derivada de la función f(x) se puede escribir como:

f'(x) = g'(h(x))*h'(x)

Usando está regla y tomando:

Obtendremos:

\(y = (1/3)*\frac{3*3x^2 - 2}{(3x^3 - 2x + 5)^{2/3}} = \frac{3x^2 - 2}{(3x^3 - 2x + 5)^{2/3}}\)

Lo cual nos da la derivada deseada.

Sí quieres aprender más sobre derivadas, puedes leer:

https://brainly.com/question/25827985

The real solutions of f(x) = 0 are -6, 0 and 8.

Function is an expression which is defined for the relationship between an independent variable and a dependent variable. In other words, it is related from a set which is called the domain to a set called range where the element in domain only has an image in range.

Given graph of a function.

f(x) = 0 implies that for particular values of x, the function maps to 0.

From the graph y = f(x)

We have to find the point values of x such that y value is 0.

These are the points where the graph touches the X axis.

The graph touches X axis at -6, 0 and 8.

Hence the real solutions of the function f(x) = 0 are  -6, 0 and 8.

Learn more about Functions here :

https://brainly.com/question/14231580

#SPJ1

Hello!

miles driven = x

the initial cost = 29

f(x) = 29 + 0.35x

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The first step I would do is to subtract the 2x from both sides so the answer is choice D.

Answer:

Variable costs are expenses that vary in proportion to the volume of goods or services that a business produces. In other words, they are costs that vary

Step-by-step explanation:

According to the Empirical Rule, 99.7% of the measures fall within 3 standard deviations of the mean in the normal distribution.

The Empirical Rule states that, for a normally distributed random variable, the symmetric distribution of scores is presented as follows:

More can be learned about the Empirical Rule at https://brainly.com/question/10093236

#SPJ1

Therefore, we can see that 10 kilometers is greater than 9 miles (10 km > 14.48 km), and so the comparison "10 kilometers < 9 miles" is false.

A kilometer (km) is a unit of measurement for length, commonly used in the metric system. It is equal to 1000 meters or approximately 0.62 miles. Kilometers are often used to measure longer distances, such as the distance between two cities or countries.

by the question.

To explain this, we can convert kilometers to miles or miles to kilometers to compare them in the same unit.

1 mile is approximately equal to 1.61 kilometers. So, 9 miles would be approximately equal to 14.48 kilometers.

To learn more about distance:

https://brainly.com/question/15172156

#SPJ

The solution to the inequality expression is -8/9 ≤ x ≥ 4/9

From the question, we have the following parameters that can be used in our computation:

|3x + 6/9| ≥ 2

Expand the inequality expression

So, we have

-2 ≤ 3x + 6/9 ≥ 2

Subtract 6/9 from both sides

So, we have

-24/9 ≤ 3x ≥ 12/9

Divide through the equation by 3

-8/9 ≤ x ≥ 4/9

Hence, the solution to the inequality expression is -8/9 ≤ x ≥ 4/9

The graph is attached

Read more about inequality at

https://brainly.com/question/30994664

#SPJ1

the solution to the system of equation from the replacement set is -5

Given the equation −6z+1=−4−7z, we are to find the value of z from the given equation:

Given

−6z+1=−4−7z

Collect the like terms;

-6z + 7z = -4 - 1

Simplify the result

z = -4 -1

z= -5

Hence the solution to the system of the equation from the replacement set is -5

Learn more on equation here: https://brainly.com/question/2972832

Answer:

-5

Step-by-step explanation:

I took the quiz in k12

Answer:

The answer is number 2

Answer:

A= Area

B= Base of the figure

H= Height of the figure

B and H are multiplied together to find the area

Step-by-step explanation:

The mean of the test is 20.

To determine the mean of the test, we need to use the information provided about the scores falling above the mean in terms of standard deviations.

Let's denote the mean of the test as μ, and the standard deviation as σ.

We are given that a score of 29 falls three standard deviations above the mean, so we can write this as:

29 = μ + 3σ

Similarly, we are told that a score of 23 falls one standard deviation above the mean, which can be expressed as:

23 = μ + σ

Now we have a system of two equations with two variables (μ and σ). We can solve this system of equations to find the values of μ and σ.

From the second equation, we can isolate μ:

μ = 23 - σ

Substituting this value into the first equation, we have:

29 = (23 - σ) + 3σ

Simplifying the equation, we get:

29 = 23 + 2σ

2σ = 29 - 23

2σ = 6

σ = 3

Substituting the value of σ back into the second equation, we find:

μ = 23 - 3

μ = 20

For more such questions on mean

https://brainly.com/question/29368683

#SPJ8

Answer:

Ok, "steeper than y = x^2" means that the function grows "faster" than y = x^2. and we can look at this by looking at the derivates, if the derivate is larger, then it is steeper.

The derivate of y = x^2 is: y´= 2x.

Now let's look at the other functions.

a) y = (1/2)*x^2

the derivate is:

y' = 2*(1/2)*x = x

this function is less steep than y = x^2

b) y = -x^2

the derivate is:

y' = -2x

So we have, in absolut value, exactly the same than for y = x^2.

The difference is that here the function decays instead of growing, so this is "less steep than y = x^2)

c) y = (2x)^2 = 4*x^2

the derivate is:

y´= 2*4*x = 8*x

this is steeper than y = x^2-

d) y = 2x^2

the derivate is:

y´= 2*2*x = 4x.

this is steeper than y = x^2

e) y = (x/2)^2 = (1/4)*x^2

the derivat is:

y' = (2/4)*x = (1/2)*x

so this is lees steep than y = x^2

The values of the trigonometric ratios are: a) - 7/5, b) -75 c ) -1/5  d ) -25/12

Trigonometric ratios are measurements of the lengths of two sides of a triangle. There are three basic trigonometric ratios: sine, cosine, and tangent.  Sine ratios are the ratios of the length of the side opposite the angle they represent over the hypotenuse

the give parameters are:

tanα = -4/3 where π/2 <α<π and sinβ = √3/2, 0<β<π/2

a)  sin(α+β)

Using the trig ratios tan = opp/adj

but from pyth. rule, 4² + 3² = h²

16+9 = h²

h = √25 = 5

Now from trig Sin(α+β)

4/5 + 3/5

=- 7/5

b) cos(α+β)

cos = ad/hypo

4/5 + 3/5

= -7/5

c) Sin(α-β)

4/5 - 3/5

-1/5

d) tan(α-β)

= -4/3 - 3/4

= (-16 - 9)/ 12

-25/12

Learn more about trigonometric ratios on https://brainly.com/question/23130410

#SPJ1

Answer:

D = 110

Step-by-step explanation:

Given,

In a parallelogram ABCD,

∠A =70∘

∠A + ∠B = 180∘.. (supplementary angles)

∠B = 180∘ – 70∘ = 110∘

∠A = ∠C and ∠B = ∠D.. (Opposite angles of parallelogram)

∠A = 70∘, ∠B = 110∘, ∠C = 70∘, ∠D = 110