Which expression is equivalent to
-9 - 9?
–9- (-9)
0-9 + (-9)
Submit Answer
0-9 +9
|-9- (-9)

Answer:

For the first question, the answer is #1.

For the second question, the answer is #2.

Step-by-step explanation:

Took the test and got it right

Answer:

Its A i took this question

Step-by-step explanation:

Answer:

C . 25 square inches

Explanation:

The base of the parallelogram is 18. 3 feet

From the information given, we have that;

Area = 280ft^2

height = 5x

Base = 6x

Note that he formula that is used for calculating the area of the parallelogram is represented with the equation;

Area = bh

Given that the parameters are;

Substituting the values of area, base and height.

280 = 5x × 6x

280 = 30x^2

Divide both sides by 30

x^2 = 280/30

Find the square root of both sides

x = √(280/30)

We have that the base = 6x

Substitute the value of x, we get;

Base = 6x = 6(√(280/30))

Base = 18.3ft

Learn about parallelograms at: https://brainly.com/question/10744696

#SPJ1

Answer:

Step-by-step explanation:

1. -10+18+6=8+6=14

2. -1+84=83

3. -2×(−6)2 +7=12×2+7=24+7=31

4. 50-(−6)2 +(−8)=50+12-8=62-8=54

5. (-2+2)× (−3)3=0× (−3)3=0

6. 30+8-42=38-42=-4

7. -9-2-1=-12

8. -32+6+6=-20

9. -10×3÷5+9=-30÷5+9=-6+9=3

10. -24÷ 8 + 33=-3+33=30

The p-value is 0.0064

Given that a random sample of 30 days and finds that the site now has an average of 124,247 unique listeners per day. Let us first understand the t-test(a2:a31, b2:b31, 2, 3) formula:

t-test stands for student's t-test.

a2:a31 is the first range or dataset.

b2:b31 is the second range or dataset.

2 represents the type of test (i.e., two-sample equal variance).

3 represents the type of t-test (i.e., two-tailed).

Now, let's solve the problem at hand using the formula given by putting the values into the formula:

P-value = 0.0064

The p-value calculated using the t.test(a2:a31, b2:b31, 2, 3) formula is 0.0064.

Learn more about t-test:

https://brainly.com/question/32576462

#SPJ11

Therefore, The density of air enclosed in a sphere with a radius halved will be 9.6 kg/m3. This is because the volume reduces by a factor of 8, resulting in an increase in density by a factor of 8.

When the radius of the sphere is halved, the volume of the sphere reduces by a factor of 8. Since the mass of the air enclosed remains constant, the density of the air within the sphere will increase by a factor of 8. Therefore, the density of the air within the sphere will be 9.6 kg/m3 after compression.
The density of the air enclosed within a sphere is given as 1.2 kg/m3. When the radius of the sphere is halved, the volume of the sphere reduces by a factor of 8 (since volume is proportional to the cube of radius). However, the mass of the air enclosed remains constant. Therefore, the density of the air within the sphere will increase by a factor of 8, resulting in a new density of 9.6 kg/m3.


Therefore, The density of air enclosed in a sphere with a radius halved will be 9.6 kg/m3. This is because the volume reduces by a factor of 8, resulting in an increase in density by a factor of 8.

To learn more about scale factors visit:

https://brainly.com/question/29967135

#SPJ11

Answer:

Your answer is C and D

Step-by-step explanation:

Answer:

D. y = -x - 1

Step-by-step explanation:

   We are using slope-intercept form for this problem.

   Since this line is going from upper left to bottom right we know it will have a negative slope.

   The line intersects the y-axis at -1, so the b value is -1.

             The equation for this line is D. y = -x - 1

Answer:

\(\displaystyle{f^{-1}(x)=\dfrac{x}{7}-\dfrac{3}{7}}\)

Step-by-step explanation:

Swap f(x) and x position of the function, thus:

\(\displaystyle{x=7f(x)+3}\)

Then solve for f(x), subtract 3 both sides and then divide both by 7:

\(\displaystyle{x-3=7f(x)}\\\\\displaystyle{\dfrac{x}{7}-\dfrac{3}{7}=f(x)}\)

Since the function has been inverted, therefore:

\(\displaystyle{f^{-1}(x)=\dfrac{x}{7}-\dfrac{3}{7}}\)

And we can prove the answer by substituting x = 1 in f(x) which results in:

\(\displaystyle{f(1)=7(1)+3 = 10}\)

The output is 10, now invert the process by substituting x = 10 in \(f^{-1}(x)\):

\(\displaystyle{f^{-1}(10)=\dfrac{10}{7}-\dfrac{3}{7}}\\\\\displaystyle{f^{-1}(10)=\dfrac{7}{7}=1}\)

The input is 1. Hence, the solution is true.

Answer:

C

Step-by-step explanation:

A line segment has two points; it does not go on forever.

A line has rays on either end, so it would go forever in both directions, not one direction.

A, B or D

..................

................

...............

......

.

.

.

.

3/4+6/7 = (21 + 24)/28 = 45/28

The answer is C. 45/28

Answer:

3 3/4 cm ^3

Step-by-step explanation:

The length is 2.5 the width is 1 and the height is 1.5  so 2.5x1x1.5

Hope it helps!

the limit of the given expression as x approaches 2 is 1/5.

To find the limit of the expression:

lim(x→2) [(ln(x + 3) - ln(5))/(x - 2)]

We can simplify it using logarithmic properties. Recall that the logarithmic property states:

ln(a) - ln(b) = ln(a/b)

Applying this property to our expression, we have:

lim(x→2) [ln((x + 3)/5)/(x - 2)]

Now, let's evaluate the limit:

lim(x→2) [ln((x + 3)/5)/(x - 2)]

By direct substitution, we get an indeterminate form of 0/0. We can use L'Hôpital's Rule to find the limit.

Applying L'Hôpital's Rule, we take the derivative of the numerator and the derivative of the denominator:

lim(x→2) [(1/(x + 3))/1]

Simplifying further, we have:

lim(x→2) [1/(x + 3)]

Now, we can substitute x = 2 into the expression:

lim(x→2) [1/(2 + 3)]

= lim(x→2) [1/5]

= 1/5

to more about expression visit:

brainly.com/question/30091641

#SPJ11

Each person (Tammy, John, Allison, and Henry) paid $11.25 for a movie ticket.

To determine the cost of each movie ticket, we will divide the total amount paid by the number of people who bought tickets.

Total amount paid: $45
Number of people: Tammy, John, Allison, and Henry (4 people)

Step 1: Divide the total amount paid by the number of people.
$45 ÷ 4 = $11.25

So, Allison and each of her friends paid $11.25 for a movie ticket.

to learn more about total amount click here:

brainly.com/question/13227525

#SPJ11

Answer:

Lines a and b are parallel, and lines c and d are parallel.

Step-by-step explanation:

The composition of functions gives:

(f o g)(x) = 4x² + 14x + 4

Evaluating this in x = 4 we geT:

(f o g)(4) = 288

Remember that a composition:

(f o g)(x) is equal to f( g(x))

So we just need to evaluate one function in the other one.

Here the two functions are:

f(x) = x² - 7x + 4

g(x) = - 2x

The composition wil be:

(f o g)(x) = g(x)² - 7*g(x) + 4

Replacing g(x) there we get:

(f o g)(x) = (-2x)² - 7*(-2x) + 4

(f o g)(x) = 4x² + 14x + 4

And evaluating this in x = 4 we get:

(f o g)(4) = 4*4² + 14*4 + 4 = 288

Then the composition evaluated in 4 is equal to 288.

Learn more about compositions:

https://brainly.com/question/10687170

#SPJ1

Answer:

9^2 (9 to the power of 2)

Step-by-step explanation:

Answer: 28

Step-by-step explanation:

16% = 0.16

Percents are just decimals!

Now you can put this in your calculator, and you will get 28.

However:

It might help you later to know that x% of y = y% of x

In other words, 16% of 175 is the same thing as 175% of 16

This problem is easier, since we can break 175% into 1 and 3/4th. 3/4th of 16 is easy to calculate, (its 12), and so we can add 12 to 16 to find the answer, which is still 28 :)

No calculator needed!

87.5

25x7=175

175/2=87.5

The statement is true. If dxdy = 1 and dydx = 0, then the tangent line to the curve y = f(x) is horizontal.

The derivatives dy/dx and dx/dy provide information about the slope of a curve at a given point. If dy/dx = 0, it indicates that the curve has a horizontal tangent at that point. Similarly, if dx/dy = 1, it means that the curve has a slope of 1 with respect to y.

Given the condition dxdy = 1 and dydx = 0, we can conclude that the curve has a horizontal tangent line. This is because dy/dx = 0 implies that the slope with respect to x is zero, and dx/dy = 1 implies that the slope with respect to y is 1.

In other words, at any point on the curve y = f(x), the tangent line will be horizontal since the slope is zero with respect to x and the slope with respect to y is 1. A horizontal tangent line indicates that the curve is neither increasing nor decreasing in the x-direction, and the rate of change is solely in the y-direction.

learn more about tangent here:

https://brainly.com/question/10053881

#SPJ11

The probability that all compressors in the sample of 3 are  imperfect is  P( all  imperfect) =  favorable  issues total  issues =  4/ 1,330 ≈0.003.

The probability is  roughly0.003 or0.3. To find the probability that all compressors in the sample of 3 are  imperfect, we need to consider the total number of possible  issues and the number of favorable  issues.    

In this case, the total number of possible  issues is the number of ways we can  elect 3 compressors from the payload of 21. This can be calculated using the combination formula  C( 21, 3) =  21!/( 3! *( 21- 3)!) =  21!/( 3! * 18!) = ( 21 * 20 * 19)/( 3 * 2 * 1) =  1,330.  

The number of favorable  issues is the number of ways we can  elect all 3  imperfect compressors from the 4  imperfect compressors in the payload.

This can be calculated using the combination formula as well  C( 4, 3) =  4!/( 3! *( 4- 3)!) =  4!/( 3! * 1!) =  4.  thus, the probability that all compressors in the sample of 3 are  imperfect is  P( all  imperfect) =  favorable  issues total  issues =  4/ 1,330 ≈0.003.

For more such questions on probability .

https://brainly.com/question/30390037

#SPJ8

75% of the beads are green in color.

percentage, a relative value indicating hundredth parts of any quantity.

Given that Chase ordered a set of beads

He received 4,000 beads in all.

3,000 of the beads were green.

We need to find the  percentage of the beads were green of 4000.

x/100×4000=3000

40x=3000

Divide both sides by 40

x=75%

Hence, 75% of the beads are green in color.

To learn more on Percentage click:

https://brainly.com/question/28269290

#SPJ1

Answer:

a= 8x+6x+48x+1

Step-by-step explanation:

Area of large rectangle is represented by a

a= 8x+6x+48x+1 - This is expanded form

Can be simplified to a= 62x+1

Answer: 0.04166

Step-by-step explanation:

1.25+(-1/3) +(-7/8)

1.25 - 1/3 - 7/8

= -8/24 - 21/24

= -8 - 21/ 24

= -29/24

= 1.25 - 29/24

= 1.25 - 1.20833

= 0.04166

Answer:

27864000

Step-by-step explanation:

Do 8.1*10^4 * 3.44*10^2

Answer:

12- x ≥ -5

Step-by-step explanation:

12 minus a number x is written as 12 - x

The greater than or equal to sign is ≥, and used next to -5

Your final answer should look like this:

12 - x ≥ -5

Hope this helps. :)